Veröffentlichungen

2011

[131] “Mit Click zu neuen Liganden.” D. Schweinfurth, N. Deibel, F. Weisser and B. Sarkar*, Nach. aus der Chem. 2011.

[130] “Bis(acetylacetonato) Ruthenium Complexes of Non-Innocent 1,2-Dioxolene Ligands: Qualitatively Different Bonding in Relation to Monoimino and Diimino Analogues.” D. Das, B. Sarkar, D. Kumbhakar, T. K. Mondal, S. M. Mobin, J. Fiedler, F. A. Urbanos, R. J.-Aparicio, W. Kaim and G. K. Lahiri, Chem.- Eur. J. 2011, in press.

[129] “Isomeric Separation in Donor-Acceptor Systems of Pd(II) and Pt(II) and a Combined Structural, Electrochemical and Spectroelectrochemical Study.” N. Deibel, D. Schweinfurth, J. Fiedler, S. Zalis and B. Sarkar*, Dalton Trans. 2011, in press.

[128] “Tuning of Spin Distribution between Ligand-based and Metal-based: EPR of Mixed-Ligand Molybdenum Trisdithiolene Complex Anions.” U. Fekl, B. Sarkar, W. Kaim, M. Zimmer-De lullis and N. Nguyen, Inorg. Chem. 2011, accepted.

[127] “Oxidation State Analysis of a Four-Component Redox Series [Os(pap)₂(Q)]ⁿ Involving Two Different Non-Innocent Ligands on a Redox-Active Transition Metal.” D. Das, B. Sarkar, T. K. Mondal, S. M. Mobin, J. Fiedler, W. Kaim and G. K. Lahiri, Inorg. Chem. 2011, 50, 7090.

[126] “Valence and Spin Situations in Isomeric [(bpy)Ru(Q´)₂]ⁿ⁺ (Q´= 3,5-di-tert-butyl-N-aryl-1,2-benzoquinonemonoimine)- An Experimental and DFT Analysis.” D. Das, T. K. Mondal, A. D. Chowdhury, F. Weisser, D. Schweinfurth, B. Sarkar, S. M. Mobin, F. A. Urbanos, R. Jemenez-Aparicio and G. K. Lahiri, Dalton Trans. 2011, ASAP.

[125] “Sensing External Spins with Nitrogen-Vacancy Diamond.” B. Grotz, J. Beck, P. Neumann, B. Naydenov, R. Reuter, F. Reinhard, F. Jelezko, J. Wrachtrup, D. Schweinfurth, B. Sarkar and P. Hemmer, New Journal of Physics 2011, 13, 1.

[124] “Expanding the Scope of ‘Click’ Derived 1,2,3-Triazole Ligands: New Palladium and Platinum Complexes.” D. Schweinfurth, S. Strobel and B. Sarkar*, Inorg. Chim. Acta 2011, 374, 253 (special issue dedicated to Prof. Dr. W. Kaim).

[123] “Cobalt Complexes with “Click”-Derived Functional Tripodal Ligands: Spin Crossover and Coordination Ambivalence.” D. Schweinfurth, F. Weisser, D. Bubrin, L. Bogani* and B. Sarkar*, Inorg. Chem. 2011, 50, 6114.

[122] “Copper(I) Complexes of Normal and Abnormal Carbenes and their use as Catalysts for the Huisgen [3+2] Cycloaddition between Azides and Alkynes.” S. Hohloch, C.-Y. Su and B. Sarkar*, Eur. J. Inorg. Chem. 2011, 3067.

[121] “Furan-Decorated Neutral Re(I)-Based 2D Rectangle and 3D Trigonal Prism.” D. Gupta, T. Rajakannu, B. Shankar, R. Shanmugam, F. Hussain, B. Sarkar and M. Sathiyendiran, Dalton Trans. 2011, 40, 5433..

[120] “EPR and 1H NMR Spectroscopy and DFT Study of Pentaammineruthenium(III) phenylcyanamide Complexes.” L. Mahmoud, S. I. Gorelsky, W. Kaim, B. Sarkar and R. J. Crutchley, Inorg. Chim. Acta 2011, 374, 143.

[119] “Redox-Rich Spin-Spin-Coupled Semiquinoneruthenium Dimers with Intense Near-IR Absorptions.” T. Kundu, B. Sarkar, T. K. Mondal, S. M. Mobin, F. A. Urbanos, J. Fiedler, R. J.-Aparicio, W. Kaim and G. K. Lahiri, Inorg. Chem. 2011, 50, 4753.

[118] “Invariant Oxidation State of Copper but not of Ruthenium in Complexes with Non-innocent N-(2-methyl-5,8-dioxo-5,8-dihydroquinolin-7-yl)acetamide: A Combined Structural, Electrochemical and Spectroelectrochemical Investigation.” A. Paretzki, H. S. Das, F. Weisser, T. Scherer, D. Bubrin, J. Fiedler, J. E. Nycx and B. Sarkar*, Eur. J. Inorg. Chem. 2011, 2413.

[117] “Copper(I) Chelation by Tetradentate NSSN Donor Ligands: Reversible Oxidation but no Oxygenation.” J. Schnödt, M. Sieger, B. Sarkar, J. Fiedler, J. S. Manzur, C.-Y. Su and W. Kaim, Z. Anorg. Allg. Chem. 2011, 637, 930.

[116] “Reversible Intramolecular Single-electron Oxidative Addition Involving a Hemilabile Non-Innocent Ligand.” R Hübner, S. Weber, S. Strobel, B. Sarkar, S. Zalis and W. Kaim, Organometallics 2011, 30, 1414.

[115] “Molecular and Electronic Structure of Cyclo[10]Thiophene in Various Oxidation States: Polaron Pair versus Bipolaron.” F. Zhang, G. Götz, E. M.-Osteritz, M. Weil, B. Sarkar, W. Kaim and P. Bäuerle, Chem. Sci. 2011, 2, 781.

[114] “Synthesis and characterisation of novel manganese guanidine complexes and their application in the epoxidation of 1-octene.” R. Wortmann, U. Flörke, B. Sarkar, V. Umamaheshwari, G. Gescheidt, S. Herres-Pawlis, G. Henkel, Eur. J. Inorg. Chem. 2011, 121.

[113] “One-pot Synthesis of Symmetric und Asymmetric p-Quinone Ligands and Unprecedented Substituent Induced Reactivity in their Dinuclear Ruthenium Complexes.” D. Schweinfurth, H. S. Das, F. Weisser, D. Bubrin and B. Sarkar*, Inorg. Chem. 2011, 50, 1150.

[112] “2,3-Bis(1-Methylimidazol-2-yl)Quinoxaline (bmiq), A New Ligand with Decoupled Electron Transfer and Metal Coordination Sites: The Very Different Redox Behavior of Isoelectronic Complexes with [PtCl₂] and [AuCl₂].” E. Bulak, T Varnali, B. Schwederski, B. Sarkar, I Hartenbach, J. Fiedler and W. Kaim, Dalton Trans. 2011, 40, 2757.

[111] “‘Double Redox-Activity’ in Azobenzene-Quinonoid Palladium(II) Complexes : A Combined Structural, Electrochemical and Spectroscopic Study.” N. Deibel, D. Schweinfurth, R. Huebner, P. Braunstein* and B. Sarkar*, Dalton Trans. 2011, 40, 431.

[110] “Energy Level Tailoring in a Series of Redox-Rich Quinonoid-Bridged Diruthenium Complexes Containing tmpa [tmpa = tris(2-pyridylmethyl) amine] as a Co-ligand .” F. Weisser, R. Huebner, D. Schweinfurth and B. Sarkar*, Chem. Eur. J. 2011, 17, 5727.

[109] “Thermally Induced Crystal-to-Crystal Transformations Accompanied by Changes in the Magnetic Properties of a CuII-p-hydroquinonate Polymer.” N. H. Phan, I. Halasz, I. Opahle, E. Alig, L. Fink, J. W. Bats, P. T. Cong, H.-W. Lerner, B. Sarkar, B. Wolf, H. O. Jeschke, M. Lang, R. Valenti, R. Dinnebier and M. Wagner, CrystEngComm 2011, 13, 391.

2010

[108] “A Cobaltciunium Complex of Dibenzo[c,g]fluorenide and its Structural and Electrochemical Properties.” F. Pammer, Y. Sun, M. Sieger, J. Fiedler, B. Sarkar, W. R. Thiel, Organometallics 2010, 29, 6165.

[107] “Oxidative Perhydroxylation of [closo-B₁₂H₁₂]₂- to the Stable Inorganic Cluster Redox System [B₁₂(OH)₁₂]^2-/•-: Experiment and Theory.” N. Van, I. Tiritiris, R. F. Winter, B. Sarkar, P. Singh, C. Duboc, A. M.-Castro, R.-A. Pérez, W. Kaim and T. Schleid, Chem. Eur. J. 2010, 16, 11242.

[106] “Straightforward Synthesis of Substituted p-Quinones: Isolation of a Key Intermediate and Use as a Bridging Ligand in a Diruthenium Complex.” H. S. Das, F. Weisser, D. Schweinfurth, C.-Y. Su, L. Bogani, J. Fiedler, and B. Sarkar*, Chem. Eur. J. 2010, 16, 2977.

[105] “Structure, Electrochemistry and Spectroscopy of a New Diacylhydrazido-Bridged Diruthenium Complex with a Strongly Near-Infrared Absorbing RuIIIRuII Intermediate.” R. Jana, B. Sarkar, D. Bubrin, J. Fiedler and W. Kaim, Inorg. Chem. Commun. 2010, 13, 1160.

[104] “Organoosmium Complexes of Imidazole Containing Chelate Acceptor Ligands.” O. Sarper, B. Sarkar, J. Fiedler, F. Lissner and W. Kaim, Inorg. Chim. Acta 2010, 363, 3070.

[103] “{Ru-NO}₆ and {Ru-NO}₇ Configurations in [Ru(trpy)(tmp)NO]ⁿ⁺ (trpy = 2,2/:6,2//-terpyridine, tmp = 3,4,7,8-tetramethyl-1,10-phenanthroline): An Experimental and Theoretical Investigation.” P. De, T. K. Mondal, S.M. Mobin, B. Sarkar and G. K. Lahiri, Inorg. Chim. Acta 2010, 363, 2945.

[102] “How to Elucidate and Control the Redox Sequence in Vinylbenzoate and Vinylpyridine Bridged Diruthenium Complexes.” F. Pevny, R. F. Winter, B. Sarkar and S. Zalis, Dalton Trans. 2010, 39, 8000.

[101] “Redox Active Mesoporous Hybrid Materials by In situ Syntheses with Urea-linked Triethoxysilylated Phenothiazines.” Z. Zhou, A. W. Franz, S. Bay, B. Sarkar, A. Seifert, P. Yang, A. Wagener, S. Ernst, M. Pagels, T. J. J. Mueller, and W. R. Thiel, Chem. Asian J. 2010, 5, 2001.

[100] „Synthesis, Structure and Spectroscopic Porperties of the New Lanthanum(III) Fluoride Oxomolybdate(VI) La₃FMo₄O₁₆.” I. Hartenbach, S. Strobel, Th. Schleid, B. Sarkar, W. Kaim, P. Nockemann, K. Binnemans and P. K. Dorhout, Eur. J. Inorg. Chem. 2010, 1626.

[99] „Carboxylate Tolerance of the Redox-Active Platform [Ru(μ-tppz)Ru]ⁿ, where tppz = 2,3,5,6-Tetrakis(2-pyridyl)pyrazine, in the Electron-Transfer Series [(L)ClRu(μ-tppz)RuCl(L)]ⁿ, n = +2, +1, 0, -1, -2 with 2-Picolinato, Quinaldato, and 8-Quinolinecarboxylato Ligands (L^-).“ T. Kundu, B. Sarkar, T. K. Mondal, J. Fiedler, S. M. Mobin, W. Kaim and G. K. Lahiri, Inorg. Chem. 2010, 49, 6565.

[98] “The 1,4-Diazabutadiene/1,2-Enediamido Non-Innocent Ligand System in the Formation of Iridaheteroarmatic Compounds: Spectroelectrochemistry and Electronic Structure.” W. Kaim, M. Sieger, S. Greulich, B. Sarkar, J. Fiedler and S. Zalis, J. Organomet. Chem. 2010, 695, 1052.

[97] “Mixed-Valency with Cyanide as Terminal Ligands: Diruthenium (III,II) Complexes with the 3,6-Bis(2-Pyridyl)-1,2,4,5-Tetrazine Bridge and Variable Co-ligands (CN^- vs. bpy or NH₃).” M. M. Vergara, M. E. G. Posse, F. Fagalde, N. E. Katz, J. Fiedler, B. Sarkar, M. Sieger and W. Kaim, Inorg. Chim. Acta 2010, 363, 163.

[96] “Stabilising a Quinonoid-Bridged Dicopper(I) Complex by Use of a dppf (dppf = (diphenylphosphino)ferrocene) Backbone.” A. Paretzki, R. Pattacini, R. Huebner, P. Braunstein* and B. Sarkar*, Chem. Commun. 2010, 46, 1497.

2009

[95] “The Semiquinone-Ruthenium Combination as a Remarkably Invariant Feature in the Redox and Substitution Series [Ru(Q)_n(acac)_3-n]^m, n = 1-3, m = (2),1,0,+1,(+2), Q = 4,6-Di-tert-butyl-N-phenyl-o-iminobenzoquinone.” D. Das, A. K. Das, B. Sarkar, T. K. Mondal, S. M. Mobin, J. Fiedler, S. Záliš, F. A. Urbanos, R. J-Aparicio, W. Kaim and G. K. Lahiri, Inorg. Chem. 2009, 48, 11853.

[94] “N₂^•3-: Filling a Gap in the N₂^n- Series.” W. Kaim* and B. Sarkar*, Angew. Chem. 2009, 121, 9573.

[93] “Six-Membered N-Heterocyclic Carbenes with a 1,1´-Ferrocenediyl Backbone: Bulky Ligands with Strong Electron-Donor Capacity and Unusual Non-innocent Character.” U. Siemeling, C. Färber, M. Leibold, C. Bruhn, P. Mücke, R. F. Winter, B. Sarkar, M. v. Hoffgarten, G. Frenkling, Eur. J. Inorg. Chem. 2009, 4607.

[92] “Nicht unschuldig: chinoide Liganden.” D. Schweinfurth, F. Weisser and B. Sarkar*, Nachrichten aus der Chemie 2009, 57, 862.

[91] “Single Electron-Transfer in Palladium Complexes of 1,4-Naphthoquinone-containing Bis(pyrazol-1-yl) methane Ligands.” S. Scheuermann, B. Sarkar, M. Bolte, J. Bats, H.-W. Lerner and M. Wagner, Inorg. Chem. 2009, 48, 9385.

[90] “Valence Structures of the Diastereomeric Complexes meso- and rac-[Ru₂(acac)₄(µ-Q)]n (n =2-, -, 0, +, 2+) with the Multiply Quinonoid Bridging Ligand Q = 1,2,4,5-Tetraimino-3,6-diketocyclohexane”. D. Kumbhakar, B. Sarkar, A. Das, A. K. Das, S. M. Mobin, J. Fiedler, W. Kaim and G. K. Lahiri, Dalton Trans. 2009, 9645.

[89] “Charge Delocalization in a Heterobimetallic Ferrocene-(Vinyl)Ru(CO)Cl(PⁱPr₃)₂ System”. K. Kowalski, M. Linseis, R. F. Winter, M. Zabel, S. Zalis, H. Kelm, H.-J. Krüger, B. Sarkar, W. Kaim, Organometallics 2009, 28, 4196.

[88] “Carbamate-Linked (Oligo)phenothiazines in Mesoporous Silica by Post Synthetic Grafting: Flouroscent Redox-Active Hybrid Materials.” A. W. Franz, Z. Zhou, R. Turdean, A. Wagener, B. Sarkar, M. Hartmann, S. Ernst, W. R. Thiel, T. J. J. Müller, Eur. J. Org. Chem. 2009, 3895.

[87] “2-Organoselenomethyl-1H-benzimidazole Complexes of Copper(II) and Copper(I)”. M. Leboschka, M. Sieger, B. Sarkar, J. Heck, M. Niemeyer, D. Bubrin, F. Lissner, Th. Schleid, S. Zalis, C.-Y. Su and W. Kaim, Z. All. Anorg. Chem. 2009, 635, 2177.

[86] “1,2,3-Triazoles Through Click Reaction and Their Palladium and Platinum Complexes”. D. Schweinfurth, R. Pattacini, S. Strobel and B. Sarkar*, Dalton Trans. 2009, 9291.

[85] “First Structurally Characterised Mono- and Dinuclear Ruthenium Complexes Derived from Zwitterionic Quinonoid Ligands”. H. S. Das, A. K. Das, R. Pattacini, R. Hübner, B. Sarkar* and P. Braunstein*, Chem. Commun. 2009, 4387.

[84] “A Five-Center Redox System: Molecular Coupling of Two Non-Innocent Imino-o-benzoquinonato-Ruthenium Functions through a π-Acceptor Bridge”. A. K. Das, B. Sarkar, J. Fiedler, S. Záliš, I. Hartenbach, S. Strobel, G. K. Lahiri, W. Kaim, J. Am. Chem. Soc. 2009, 131, 8895.

[83] “Stabilization of {RuNO}₆ and {RuNO}₇ States in [Ru^II(trpy)(bik)(NO)]ⁿ⁺ (trpy = 2,2/:6/,2//-Terpyridine, bik = 2,2/-Bis(1-methylimidazolyl)ketone). Synthesis, Reactivity and Photorelease of Metal Bound Nitrosyl“. P. De, B. Sarkar, S. Maji, A. K. Das, E. Bulak, S. M. Mobin, W. Kaim and G. K. Lahiri, Eur. J. Inorg. Chem. 2009, 2702.

[82] “Combining Two Non-Innocent Ligands in Isomeric Complexes [Pt(pap)_mQ_n]⁰ (pap = Phenylazopyridine, Q = 3,5-Di-tert-butyl-benzoquinone)”. B. Sarkar*, R. Hübner, R. Pattacini and I. Hartenbach, Dalton Trans., 2009, 4653.

[81] “An Isolated Odd-Electron Complex [Ru^k(NO^m)(Qⁿ)(terpy)]²⁺ with the Two Prototypical Non-Innocent Ligands Nitrosyl and Q = 4,6-Di-tert-butyl-N-phenyl-o-iminobenzoquinone”. A. K. Das, B. Sarkar, C. Duboc, S. Strobel, J. Fiedler, S. Záliš, G. K. Lahiri and W. Kaim, Angew. Chem. 2009, 121, 4306.

[80] “Silver(I), Copper(I) and Copper(II) Complex of the New N,Se-Chelate Ligand 2-Phenylselenomethyl-1H-benzimidazole: Electrochemistry and Structure”. M. Leboschka, M. Sieger, B. Sarkar, M. Niemeyer, T. Schurr, J. Fiedler, S. Záliš, and W. Kaim, Z. Allg. Anorg. Chem. 2009, 635, 1001.

[79] “Heterohexanuclear (Cu₃Fe₃) Complexes of Substituted Hexaazatrinaphthylene (HATN) Ligands: Twofold BF₄- Association in the Solid and Stepwise Oxidation (3e^-) or Reduction (2e^-) to Spectroelectrochemically Characterized Species”. S. Roy, B. Sarkar, C. Duboc, J. Fiedler, O. Sarper, F. Lissner, S. M. Mobin, G. K. Lahiri and W. Kaim, Chem. Eur. J. 2009, 15, 6932.

[78] “Evidence for the dimer-of-(mixed-valent dimers) configuration in tetranuclear {(μ₄-TCNX)[Ru(NH₃)₅]₄}⁸⁺, TCNX = TCNE and TCNQ, from DFT calculations”. S. Zalis, B. Sarkar, C. Duboc and W. Kaim, Monatsh. Chem. 2009, 140, 765.

[77] “Structures, Redox and Spectroscopic Properties of Pd^II and Pt^II Complexes containing the Azo Functionality”. S. Roy, I. Hartenbach and B. Sarkar*, Eur. J. Inorg. Chem. 2009, 2553.

[76] “Synthesis of Bis(Phosphino-ferrocenyl) Copper Complexes from Zwitterionic Quinonoid Ligands, their Structural and Redox Properties”. P. Braunstein*, D. Bubrin, and B. Sarkar*, Inorg. Chem. 2009, 48, 2534.

2008

[75] “Intramolecular Valence and Spin Interaction in rac and meso Diastereomers of a p-Quinonoid Bridged Diruthenium Complex”. D. Kumbhakar, B. Sarkar, S. Maji, S. M. Mobin, J. Fiedler, F. A. Urbanos, R. J.-Aparicio, W. Kaim and G. K. Lahiri, J. Am. Chem. Soc. 2008, 130, 17575.

[74] “Stabilizing the Elusive ortho-Quinone/Copper(I) Oxidation State Combination through π–π Interaction in an Isolated Complex”. S. Roy, B. Sarkar, D. Bubrin, M. Niemeyer, S. Zalis, G.K. Lahiri and W. Kaim, J. Am. Chem. Soc. 2008, 130, 15230.

[73] “Structural and Spectroscopic Evidence for Marginal Metal-to-Ligand Charge Transfer in Complexes Pt(abpy)Me₃X, abpy = 2,2’-Azobispyridine, X = Cl,Br,I”. A. Dogan, C. Kavakli, M. Sieger, M. Niemeyer, B. Sarkar and W. Kaim, Z. Anorg. Allg. Chem., 2008, 634, 2527.

[72] “Valence State Analysis via Spectroelectrochemistry in Differently Quinonoid Bridged Diruthenium Complexes [(acac)₂Ru(µ-L)Ru(acac)₂]ⁿ⁺ (n = +2, +1, 0, 1, 2)”. S. Ghumaan, B. Sarkar, S. Maji, V. G. Puranik, J. Fiedler, F. A. Urbanos, R. J.Aparicio, W. Kaim and G. K. Lahiri, Chem. Eur. J. 2008, 14, 10816.

[71] “A tetranuclear organorhenium(I) complex of the 2,3,5,6-tetrafluoro-7,7,8,8-tetracyano-p-quinodimethane radical anion, TCNQF₄^•-“. A. N. Maity, B. Sarkar, M. Niemeyer, M. Sieger, C. Duboc, S. Záliš and W. Kaim, Dalton Trans. 2008, 5749.

[70] “Ligand centered oxidations and electron delocalization in a tetranuclear complex of a tetradonor-substituted olefin”. M. Linseis, R.F. Winter, B. Sarkar, W. Kaim and S. Zalis, Organometallics 2008, 27, 3321.

[69] “Establishing the Chelating α-Azocarbonyl Function in π-Acceptor Ligands”. S. Roy, M. Sieger, B. Sarkar, B. Schwederski, F. Lissner, T. Schleid, J. Fiedler and W. Kaim, Angew. Chem. 2008, 120, 6287.

[68] “High-frequency EPR and structure data as complementary information on stable radical complexes containing the semi-reduced azo function”. B. Sarkar, S. Frantz, S. Roy, M. Sieger, C. Duboc, G. Denninger, H.-J. Kümmerer and W. Kaim, J. Mol. Struc. 2008, 890, 133.

[67] “1,4,7,10 – Tetraazacyclododecane Metal Complexes as Potent Promoters of Phosphodiester Hydrolysis under Physiological Conditions”. M. Subat, K. Woinaroschy, C. Gerstl, B. Sarkar, W. Kaim and B. König, Inorg. Chem.,  2008, 47, 4661.

[66] “Mixed-valent intermediates as ideal targets for spectroelectrochemistry (SEC)”. W. Kaim, B. Sarkar and G. K. Lahiri, in W. Kaim and A. Klein, Eds. Spectroelectrochemistry, RSC 2008, pp 68-90.

[65] “Valence State Alternatives in Diastereoisomeric Complexes [(acac)₂Ru(µ-QL)Ru(acac)₂]ⁿ (QL^2- = 1,4-Dioxido-9,10-anthraquinone, n = +2,+1,0,-1,-2)”. S. Maji, B. Sarkar, S. M. Mobin, J. Fiedler, F. A. Urbanos, R. J.-Aparicio, W. Kaim, and G. K. Lahiri, Inorg. Chem. 2008, 47, 5204.

[64] “Redox Properties of Ruthenium Nitrosyl Porphyrin Complexes with Different Axial Ligation: Structural, Spectroelectrochemical (IR, UV-VIS, EPR) and Theoretical Studies”. P. Singh, A. K. Das, B. Sarkar, M. Niemeyer, F. Roncaroli, J. A. Olabe, J. Fiedler, S. Záliš and W. Kaim, Inorg. Chem. 2008, 47, 7106.

[63] “Formation, Reactivity and Photorelease of Metal Bound Nitrosyl in [Ru(trpy)(L)(NO)]ⁿ⁺ (trpy = 2,2/:6/,2//-Terpyridine, L = 2-Phenylimidazo[4,5-f]1,10-phenanthroline)”. S. Maji, B. Sarkar, M. Patra, A. K. Das, S. M. Mobin, W. Kaim and G. K. Lahiri, Inorg. Chem. 2008, 47, 3218.

[62] “Mixed-Valent Metals Bridged by a Radical Ligand: Fact, or Fiction Based on Structure-Oxidation State Correlations”. B. Sarkar, S. Patra, J. Fiedler, R. B. Sunoj, D. Janardanan, G. K. Lahiri, W. Kaim, J. Am. Chem. Soc. 2008, 130, 3532.

[61] “A Series of Metal Complexes with the Non-Innocent N,N’-Bis(pentafluorophenyl)-o-phenylenediamido Ligand: Twisted Geometry for Tuning the Electronic Structure”. M. M. Khusniyarov, K. Harms, O. Burghaus, J. Sundermeyer, B. Sarkar, W. Kaim, J. van Slageren, C. Duboc, and J. Fiedler, Dalton Trans. 2008, 1355.

[60] “Double cyclometallation of bridging 3,6-bis(2-thienyl)-1,2,4,5-tetrazine in a dinuclear mesityl(dimethylsulfoxide)platinum(II) complex: Structure and properties”. B. Sarkar, T. Schurr, I. Hartenbach, Th. Schleid, J. Fiedler and W. Kaim, J. Organomet. Chem. 2008, 693, 1703.

[59] “Structures and Redox Properties of Metal Complexes of the Electron-Deficient Diphosphine Chelate Ligand R,R-QuinoxP”. A. K. Das, E. Bulak, B. Sarkar, F. Lissner, Th. Schleid, M. Niemeyer, J. Fiedler and W. Kaim, Organometallics 2008, 27, 218.

[58] “Ruthenium Complexes with Vinyl, Styryl and Vinylpyrenyl Ligands: A Case of Non-Innocence in Organometallic Chemistry”. J. Maurer, M. Linseis, B. Sarkar, B. Schwederski, M. Niemeyer, W. Kaim, S. Zalis, C. Anson, M. Zabel and R. F. Winter, J. Am. Chem. Soc. 2008, 130, 259.

2007

[57] “Coordination Alternatives in Dinuclear Bis(pyridine-2-ylalkyl)benzylaminecopper(II) Complexes with OH^-, RO^-,F^- or Cl^- Bridges: Experimental Structures and DFT Preferences”. J. Manzur, A. Vega, A.M. García, C. Acuña, M. Sieger, B. Sarkar, M. Niemeyer, F. Lissner, Th. Schleid and W. Kaim, Eur. J. Inorg. Chem. 2007, 5500.

[56] “Singlet Diradical Complexes of Chromium, Molybdenum and Tungsten with Azo Anion Radical Ligands from M(CO)₆ Precursors”. A. Sanyal, S. Chatterjee, A. Castiñeiras, B. Sarkar, P. Singh, J. Fiedler, S. Záliš, W. Kaim and S. Goswami, Inorg. Chem. 2007, 46, 8584.

[55] “Towards New Organometallic Wires? Tetraruthenium Complexes Bridged by Phenylenevinylene and Vinylpyridine Ligands”. J. Maurer, B. Sarkar, W. Kaim, R.F. Winter and S. Zalis, Chem. Eur. J. 2007, 13, 10257.

[54] “Tetranuclear Complexes of [Fe(CO)₂(C₅H₅)]⁺ with the TCNX Ligands (TCNX = TCNE, TCNQ, TCNB): Intramolecular Electron Transfer Alternatives in Compounds (µ₄-TCNX)[ML_n]⁴”. A. Maity, B. Schwederski, B. Sarkar, S. Záliš, J. Fiedler, S. Kar, G.K. Lahiri, C. Duboc, M. Grunert, P. Gütlich and W. Kaim, Inorg. Chem. 2007, 46, 7312.

[53] “On the redox states of ruthenium porphyrin oxidation catalysts”. A. Berkessel, E. Ertürk, P. Kaiser, A. Klein, R. M. Kowalczyk and B. Sarkar, Dalton Trans. 2007, 3427.

[52] “The Electrochemical Behaviour of Organonickel Complexes: Mono-, Di- and Trivalent Nickel”. A. Klein, A. Kaiser, B. Sarkar, M. Wanner and J. Fiedler, Eur. J. Inorg. Chem. 2007, 965.

[51] “Multiple one-electron oxidation and reduction of trinuclear bis(2,4-pentanedionato)ruthenium complexes with substituted diquinoxalino[2,3-a:2′,3′-c]phenazine ligands”. S. Ghumaan, B. Sarkar, M.P. Patil, J. Fiedler, R.B. Sunoj, W. Kaim and G.K. Lahiri, Polyhedron 2007, 26, 3409.

[50] “Mixed valency in ruthenium complexes—Coordinative aspects”. W. Kaim and B. Sarkar, Coord. Chem. Rev. 2007, 251, 584.

[49] “Non-innocent behaviour of ancillary and bridging ligands in homovalent and mixed-valent ruthenium complexes [A₂Ru(µ-L)RuA₂]ⁿ, A = 2,4-pentanedionato or 2-phenylazopyridine, L^2– = 2,5-bis(2-oxidophenyl)pyrazine”. S. Maji, B. Sarkar, S.M. Mobin, J. Fiedler, W. Kaim and G.K. Lahiri, Dalton Trans. 2007, 2411.

[48] “Ancillary ligand determination of the spin location in both oxidised and reduced forms of diruthenium complexes bridged by bis-bidentate 1,4-bis(2-phenolato)-1,4-diazabutadiene”. S. Kar, B. Sarkar, S. Ghumaan, M. Leboschka, J. Fiedler, W. Kaim and G.K. Lahiri, Dalton Trans. 2007, 1934.

[47] “Probing Mixed Valence in a New tppz-Bridged Diruthenium(III,II) Complex {( -tppz)[Ru(bik)Cl]₂}³⁺ (tppz = 2,3,5,6-Tetrakis(2-pyridyl)pyrazine, bik = 2,2'-Bis(1-methylimidazolyl)ketone): EPR Silence, Intervalence Absorption, and CO Line Broadening”. M. Koley, B. Sarkar, S. Ghumaan, E. Bulak, J. Fiedler, W. Kaim and G.K. Lahiri, Inorg. Chem. 2007, 46, 3736.

2006

[46] “Divinylphenylene-Bridged Diruthenium Complexes Bearing Ru(CO)Cl(PⁱPr₃)₂ Entities”. J. Maurer, B. Sarkar, B. Schwederski, W. Kaim, R.F. Winter and S. Zalis, Organometallics 2006, 25, 3701.

[45] “2,2'-Dipyridylketone (dpk) as Ancillary Acceptor and Reporter Ligand in Complexes [(dpk)(Cl)Ru(µ-tppz)Ru(Cl)(dpk)]ⁿ⁺ where tppz = 2,3,5,6-Tetrakis(2-pyridyl)pyrazine”. S. Ghumaan, B. Sarkar, N. Chanda, M. Sieger, J. Fiedler, W. Kaim and G.K. Lahiri, Inorg. Chem. 2006, 45, 7955.

[44] “Conjugation Length Dependent Ground and Excited State Electronic Behavior in Oligothienyl Ru Complexes”. C. Moorlag, B. Sarkar, C. N. Sanrame, P. Bauerle, W. Kaim and M.O. Wolf, Inorg. Chem. 2006, 45, 7044.

[43] “The Metal-NO Interaction in the Redox Systems [Cl₅Os(NO)]^n-, n = 1-3, and cis-[(bpy)₂ClOs(NO)]^2+/+: Calculations, Structural, Electrochemical, and Spectroscopic Results”. P. Singh, B. Sarkar, M. Sieger, M. Niemeyer, J. Fiedler, S. Zalis and W. Kaim, Inorg. Chem. 2006, 45, 4602.

[42] “Metal-Induced Reductive Ring Opening of 1,2,4,5-Tetrazines: Three Resulting Coordination Alternatives, Including the New Non-Innocent 1,2-Diiminohydrazido(2-) Bridging Ligand System”. S. Maji, B. Sarkar, S. Patra, J. Fiedler, S.M. Mobin, V.G. Puranik, W. Kaim and G. K. Lahiri, Inorg. Chem. 2006, 45, 1316.

[41] “Controlling metal/ligand/metal oxidation state combinations by ancillary ligand (L): Variation in the redox systems [L₂Ru(µ-boptz)RuL₂]ⁿ, boptz = 3, 6-bis(2-oxidophenyl)-1,2,4,5-tetrazine and L = acac, bpy or pap (2-phenylazopyridine)”. S. Patra, B. Sarkar, S. Maji, J. Fiedler, F. A. Urbanos, R. J.-Aparicio, W. Kaim and G. K. Lahiri, Chem. J. Eur. 2006, 12, 489.

2005

[40] “Treatment of citrate-capped Au colloids with NaCl, NaBr and Na₂SO₄: a TEM, EAS and EPR study of the accompanying changes”. M. Wanner, D. Gerthsen, S-S. Jester, B. Sarkar and B. Schwederski, Colloid and Polymer Science 2005, 283, 783.

[39] “Theoretical and experimental evidence for a new kind of spin-coupled singlet species: Isomeric mixed-valent complexes bridged by an anion radical ligand”. B. Sarkar, S. Patra, J. Fiedler, R. Sunoj, D. Janardanan, S. M. Mobin, M. Niemeyer, G. K. Lahiri and W. Kaim, Angew. Chem. 2005, 117, 5800, Angew. Chem. Intl. Ed. 2005, 44, 5655.

[38] “A New Coordination Mode of the Photometric Reagent Glyoxalbis(2-hydroxyanil) (H₂gbha): Bis-Bidentate Bridging by gbha^2- in the Redox Series {(µ-gbha)[Ru(acac)₂]₂}ⁿ (n = -2, -1, 0, +1, +2), Including a Radical-Bridged Diruthenium(III) and a Ru^III/Ru^IV Intermediate”. S. Kar, B. Sarkar, S. Ghumaan, D. Roy, F: A. Urbanos, J. Fiedler, R. B. Sunoj, R. Jimenez-Aparicio, W. Kaim and G.K. Lahiri, Inorg. Chem. 2005, 44, 8715.

[37] “Complex Series [Ru(trpy)(dpk)(X)]ⁿ⁺ (trpy = 2,2/:6/,2//Terpyridine, dpk = 2,2/Dipyridylketone, X = Cl^-, H₂O, CH₃CN, NO^2-, NO⁺, NO^•, NO^-): Substitution and Electron Transfer, Structure and Spectroscopy”. S. Sarkar, B. Sarkar, N. Chanda, S. Kar, S. M. Mobin, J. Fiedler, W. Kaim and G. K. Lahiri, Inorg. Chem. 2005, 44, 6092.

[36] “Self-assembly of heterobimetallic neutral macrocycles incorporating ferrocene spacer groups: Spectroelectrochemical analysis of the double two-electron oxidation of a molecular rectangle”. N. Das., A. M. Arif, P. J. Stang, M. Sieger, B. Sarkar, W. Kaim and J. Fiedler, Inorg. Chem. 2005, 44, 5798.

[35] “2,5-Dioxido-1,4-benzoquinonediimine (H₂L^2-), a hydrogen-bonding non-innocent bridging ligand related to aminated topaquinone: Different oxidation state distributions in complexes [{(bpy)₂Ru}₂(µ-H₂L)]ⁿ (n = 0,+,2+,3+,4+) and [{(acac)₂Ru}₂(µ-H₂L)]ⁿ (n = 2-, -, 0, +, 2+)”. S. Kar, B. Sarkar, S. Ghumaan, D. Janardanan, J. van Slageren, J. Fiedler, V. G. Puranik, R. B. Sunoj, W. Kaim and G. K. Lahiri, Chem. J. Eur. 2005, 11, 4901.

[34] “Electron delocalisation in mixed-valent butadienedienediyl-bridged diruthenium complexes”. J. Maurer, R. F. Winter, B. Sarkar and S. Zális, J. Solid State Electrochem. 2005, 9, 738.

[33] “Mixed-ligand copper complexes with 8-methylthioquinoline and triphenylphosphine or the o-semiquinone/catecholate redox system”. S. Ye, B. Sarkar, M. Niemeyer and W. Kaim, Eur. J. Inorg. Chem. 2005, 4735.

[32] “Three-spin system with a twist: A bis(semiquinonato)copper complex with non-planar copper(II)”. S. Ye, B. Sarkar, F. Lissner, T. Schleid, J. van Slageren, J. Fiedler and W. Kaim, Angew. Chem. 2005, 117, 2140, Angew. Chem. Intl. Ed., 2005, 44, 2103.

[31] “Isomeric ruthenium terpyridine complexes [Ru(trpy)(L)Cl]ⁿ⁺ incorporating tetrazine based ancillary ligand, L = 3-amino-6-(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine. Synthesis, structures,spectral and electrochemical aspects”. S Patra, B. Sarkar, S. Ghumaan, M. P. Patil, S. M. Mobin, R. B. Sunoj, W. Kaim and G. K. Lahiri, Dalton Trans. 2005, 1188.

[30] “3,6-bis(2´-pyridyl)pyridazine (L) and its deprotonated form (L-H⁺) as ligands for {(acac)₂Ruⁿ⁺} and {(bpy)₂Ru^m+}: investigation of mixed valency in [{(acac)₂Ru}₂(µ-L-H⁺)]0 and [{(bpy)₂Ru}₂(µ-L-H⁺)]⁴⁺ spectroelectrochemistry and EPR”. S. Ghumaan, B. Sarkar, S. Patra, J. van Slageren, J. Fiedler, W. Kaim and G. K. Lahiri, Dalton Trans. 2005, 706.

[29] “Sensitive oxidation state ambivalence in the asymmetric three-center (M/Q/M/) systems [(acac)₂Ru(µ-Q)Ru(acac)₂]ⁿ, Q = 1, 10-phenanthroline-5,6-dione or 1, 10-phenanthroline-5,6-diimine; n = +, 0, -, 2-.” S. Ghumaan, B. Sarkar, S. Patra, J. Fiedler, J. van Slageren, W. Kaim and G. K. Lahiri, Inorg. Chem. 2005, 44, 3210.

[28] “The redox series [M(bpy)₂(Q)]ⁿ⁺, M = Ru or Os, Q = 3,5-di-tert-butyl-N-phenyl-1,2-benzoquinonemonoimine. Isolation and a complete X and W band EPR study of the semiquinone states (n = 1)”. S. Ye, B. Sarkar, C. Duboc, J. Fiedler and W. Kaim, Inorg. Chem. 2005, 44, 2843.

[27] “Synthesis, structures, spectra and redox properties of Ru^II(acac)₂(L) (1), [Ru^II(bpy)₂(L)](ClO₄)₂ (2) and [Ru^II(bpy)(L)₂](ClO₄)₂ (3) (L = 3-amino-6-(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine, acac = acetylacetonate, bpy = 2,2/ bipyridine)”. A. Nayak, S. Patra, B. Sarkar, S. Ghumaan, V. G. Puranik, W. Kaim and G. K. Lahiri, Polyhedron 2005, 24, 333.

[26] “Chemistry of C-trimethylsilyl-substituted heterocarboranes. 31. New insights into reaction pathways in carborane ligand systems: Synthetic, structural, spectroscopic and electrochemical studies on sandwich and half-sandwich metallacarboranes of iron, cobalt and nickel.” S. Tomlinson, C. Zheng, N.S. Hosmane, J. Yang, Y. Wang, H. Zhang, J.A. Maguire, F. Baumann, A. Klein, B. Sarkar und W. Kaim, Organometallics 2005, 24, 2177.

2004

[25] “Molecule-bridged mixed-valent intermediates involving the Ru^I oxidation state”. B. Sarkar, W. Kaim, J. Fiedler and C. Duboc, J. Am. Chem. Soc. 2004, 126, 14706.

[24] “High-frequency EPR study of reduced diruthenium and dirhenium polypyridine complexes based on the 1,2,4,5-tetrazine radical bridge”. B. Sarkar, S. Frantz, W. Kaim and C. Duboc, Dalton Trans. 2004, 3727.

[23] “Pyrrolyl substituted allenylidene complexes of Ruthenium”. S. Hartmann, R. F. Winter, B. Sarkar and F. Lissner, Dalton Trans. 2004, 3273.

[22] “Establishing the NO oxidation state in complexes [Cl₅(NO)M]^n-, M = Ru or Ir, through experiments and DFT calculations”. M. Sieger, B. Sarkar, S. Zalis, J. Fiedler, N. Escola, F. Doctorovich, J. A. Olabe and W. Kaim, Dalton Trans. 2004, 1797.

[21] "The triruthenium complex [{(acac)₂Ru^II}₃(L)] containing a conjugated diquinoxaline[2,3-a:2´,3´-c]phenazine (L) bridge and acetylacetonate (acac) as ancillary ligands. Synthesis, spectroelectrochemical and EPR investigation". S. Patra, B. Sarkar, S. Ghumaan, J. Fiedler, W. Kaim und G.K. Lahiri, Dalton Trans. 2004, 754.

[20] “The redox series {(µ-L)[Ru^II(acac)₂]₂}ⁿ, n = 2+, +, 0, -, 2-, with L = 3,3',4,4'-tetraimino-3,3',4,4'-tetrahydrobiphenyl. Detection and EPR-supported assignment of near-infrared absorptions for the paramagnetic intermediates by spectroelectrochemistry”. S. Patra, B. Sarkar, S. Ghumaan, J. Fiedler, W. Kaim and G. K. Lahiri, Dalton Trans. 2004, 750.

[19] “Isovalent and mixed-valent diruthenium complexes [(acac)₂Ru^II(µ-bpytz)Ru^II(acac)₂] and [(acac)₂Ru^II(µ-bpytz)Ru^III(acac)₂](ClO₄) (acac = acetylacetonate and bpytz = 3,6-bis-(3,5-dimethylpyrazolyl)-1,2,4,5-tetrazine). Synthesis, spectroelectrochemical and EPR investigation”. S. Patra, B. Sarkar, S. Ghumaan, J. Fiedler, W. Kaim and G. K. Lahiri, Inorg. Chem. 2004, 43, 6108.

[18] “The complex reduction chemistry of (abpy)PtCl₂, abpy = 2,2/ - Azobispyridine: Formation of cyclic [(µ,η²:η¹-abpy)PtCl]₂²⁺ with a new coordination mode for abpy, and a near-infrared ligand-to-ligand intervalence charge transfer absorption of the one-electron reduced state”. A. Dogan, B. Sarkar, A. Klein, F. Lissner, Th. Schleid, J. Fiedler, S. Zalis, V. K. Jain and W. Kaim, Inorg. Chem. 2004, 43, 5973.

[17] “Mixed-valence aspects of complexes [{(L)ClRu}₂(µ-tppz)]ⁿ⁺ incorporating 2-(2-pyridyl)azoles (L) as ancillary functions and 2,3,5,6-tetrakis(2-pyridyl)pyrazine (tppz) as bis-tridentate bridging ligand”. N. Chandra, B. Sarkar, J. Fiedler, W. Kaim and G. K. Lahiri, Inorg. Chem. 2004, 43, 5128.

[16] “EPR insensivity of the metal – nitrosyl spin – bearing moiety in complexes [LnRu^II-NO^•]^k”. S. Frantz, B. Sarkar, M. Sieger, W. Kaim, F. Roncaroli, J. A. Olabe, and S. Zalis, Eur. J. Inorg. Chem. 2004, 2902.

[15] “Bridge dominated oxidation of a diruthenium 1,3-divinylphenylene complex”. J. Maurer, R.F. Winter, B. Sarkar, J. Fiedler and S. Zalis, Chem. Commun. 2004, 1900.

2003

[14] “3,6 – Bis(2-pyrazinyl) – 1,2,4,5 – tetrazin : Ein neuer mehrfunktioneller Ligand und sein syn, fac – konfigurierter Bis(tricarbonylchlororhenium) – Komplex”. B. Sarkar, W. Kaim, T. Schleid, I. Hartenbach and J. Fiedler, Z. Anorg. Allg. Chem. 2003, 629, 1347.

[13] “Separating innocence and non-innocence for ligands and metals in complexes [(L)Ru(acac)₂]ⁿ (n = -1, 0, +1; L = o-Iminoquinone or o-Iminothioquinone)”. S. Patra, B. Sarkar, S.M. Mobin, W. Kaim and G.K. Lahiri, Inorg. Chem., 2003, 42, 6469.

[12] “What a difference ancillary thienyl makes: Tremendous additional stabilisation of the diruthenium(III,II) but not the diosmium(III,II) mixed – valent state in tetrazine ligand – bridged complexes”. B.Sarkar, W.Kaim, A. Klein, B.Schwederski, J. Fiedler, C. Duboc – Toia and G.K. Lahiri, Inorg. Chem. 2003, 42, 6172.

[11] “An unusual dinuclear ruthenium(III) complex with a conjugated bridging ligand derived from cleavage of a 1,4-Dihydro-1,2,4,5-tetrazine ring. Synthesis, structure, and UV-vis-NIR spectroelectrochemical characterisation of a five-membered redox chain incorporating two mixed-valent states”. S. Patra, T.A. Miller, B. Sarkar, M. Niemeyer, M.D. Ward and G.K. Lahiri, Inorg. Chem. 2003, 42, 4707.

[10] “First example of µ₃ – sulfido bridged mixed – valent triruthenium complex triangle Ru^III₂Ru^II(O,O – acetylacetonate)₃(µ-O,O,γ-C – acetylacetonate)₃(µ₃ – S)(1) incorporating simultaneous O,O and γ-C bonded bridging acetylacetonate units. Synthesis, crystal structure and spectral and redox properties”. S. Patra, B. Mondal, B .Sarkar, M. Niemeyer, G.K. Lahiri, Inorg. Chem. 2003, 42, 1322.

[9] “Electron transfer reactions of (C₅R₅)₂(CO)₂Ti (R = H or Me) with TCNE or TCNQ. Spectroelectrochemical assigenment of metal and ligand oxidation states in [(C₅R₅)₂(CO)Ti(TCNX)]^2-/-/0/+”. H. Hartmann, B. Sarkar, W. Kaim and J. Fiedler, J. Organomet. Chem. 2003, 687, 100.

[8] “Synthesis and mixed valence aspects of [{(L)ClRu}₂(µ-tppz)]ⁿ⁺ incorporating 2,2/-dipyridylamine (L) as ancillary and 2,3,5,6-tetrakis(2-pyridyl)pyrazine (tppz) as bridging ligand”. N. Chandra, B. Sarkar, J. Fiedler, W. Kaim and G.K. Lahiri”, Dalton Trans. 2003, 3550.

[7] “Synthesis, mixed valence aspects and non-linear optical properties of the triruthenium complexes [{(bpy)₂Ru^II}₃(L)]³⁺ and [{(phen)₂Ru^II}₃(L)]³⁺ (bpy = 2,2/ - bipyridine, phen = 1, 10-phenanthroline and L^3- = 1,3,5-triazine-2,4,6-trithiol)”. S. Kar, T.A. Miller, S. Chakraborty, B. Sarkar, B. Pradhan, T. Kundu, M.D. Ward and G.K. Lahiri, Dalton Trans. 2003, 2591.

[6] “First crystal structure determination and high-frequency EPR study of an Organoarsanecopper radical complex”. S. Ye, W. Kaim, B. Sarkar, B. Schwederski, F. Lissner, T. Schleid, C. Duboc-Toia and J. Fiedler, Inorg. Chem. Commun. 2003, 6, 1196.

[5] “(Allenylidene) ruthenium complexes with redox – active substituents and ligands." S. Hartmann, R.F. Winter, B.M. Brunner, B. Sarkar, A. Knödler, I. Hartenbach, Eur. J. Inorg. Chem. 2003, 876.

[4] “Long-range electronic coupling in various oxidation states of a C-4 linked tris(β-diketonato) ruthenium dimmer”. Y. Hoshino, S. Higuchi, J. Fiedler, C-Y. Su, A. Knödler, B. Schwederski, B. Sarkar, H. Hartmann, W. Kaim, Angew. Chem. 2003, 115, 698, Angew. Chem. Intl. Ed. 2003, 42, 674.

[3] "Chemistry of C-trimethylsilsyl-substituted heterocarboranes. 29. Synthetic and structural studies on lanthanacarboranes with two and three „Carbons Apart"-Carborane cages bonding to Ln(III) metal [Ln(III) = Nd, Gd, Dy, Ho, Er, Tb and Lu" J. Wang, S. Li, C. Zheng, J.A. Maguire, B. Sarkar, W. Kaim und N.S. Hosmane, Organometallics 2003, 22, 4334.

2002

[2] “Synthesis, structure and spectroelectrochemical properties of a dinuclear ruthenium-complex exhibiting a strong electronic interaction across a 1,2,4,5 – tetrazine bridging”. B. Sarkar, R.H. Laye, B. Mondal, S. Chakraborty, R.L. Paul, J.C. Jeffery, V.G. Puranik, M.D. Ward and G.K Lahiri, Dalton Trans. 2002, 2097.

[1] “Bridging function mediated intermetallic coupling in diruthenium – bis(bipyridine) complexes”. S. Chakraborty, B. Mondal, B. Sarkar and G.K. Lahiri, Proc. Indian Acad. Sci. (Chem. Sci.), 2002, 114, 443.

Veröffentlichungen als Korrespondenzautor

[19] “Characterization of [Pd(pap)(NHC)I₂]ⁿ (n = +1, 0, -1; pap = Phenylazopyridine; NHC = N-Heterocyclic Carbene): Unusual Coordination Mode of pap and Non-innocent Behavior of NHC.” N. Deibel, D. Schweinfurth, S. Hohloch and B. Sarkar*, Inorg. Chim. Acta 2011, submitted (young investigator issue).

[18] “Mit Click zu neuen Liganden.” D. Schweinfurth, N. Deibel, F. Weisser and B. Sarkar*, Nach. aus der Chem. 2011

[17] “Isomeric Separation in Donor-Acceptor Systems of Pd(II) and Pt(II) and a Combined Structural, Electrochemical and Spectroelectrochemical Study.” N. Deibel, D. Schweinfurth, J. Fiedler, S. Zalis and B. Sarkar*, Dalton Trans. 2011, accepted.

[16] “Expanding the Scope of ‘Click’ Derived 1,2,3-Triazole Ligands: New Palladium and Platinum Complexes.” D. Schweinfurth, S. Strobel and B. Sarkar*, Inorg. Chim. Acta 2011, 374, 253 (special issue dedicated to Prof. Dr. W. Kaim).

[15] “Cobalt Complexes with “Click”-Derived Functional Tripodal Ligands: Spin Crossover and Coordination Ambivalence.” D. Schweinfurth, F. Weisser, D. Bubrin, L. Bogani* and B. Sarkar*, Inorg. Chem. 2011, 50, 6114.

[14] “One-pot Synthesis of Symmetric und Asymmetric p-Quinone Ligands and Unprecedented Substituent Induced Reactivity in their Dinuclear Ruthenium Complexes.” D. Schweinfurth, H. S. Das, F. Weisser, D. Bubrin and B. Sarkar*, Inorg. Chem. 2011, 50, 1150.

[13] “Copper(I) Complexes of Normal and Abnormal Carbenes as Highly Efficient Catalysts for the Huisgen [3+2] Cycloaddition between Azides and Alkynes.” S. Hohloch, C.-Y. Su and B. Sarkar*, Eur. J. Inorg. Chem. 2011, 3067.

[12] “‘Double Redox-Activity’ in Azobenzene-Quinonoid Palladium(II) Complexes : A Combined Structural, Electrochemical and Spectroscopic Study.” N. Deibel, D. Schweinfurth, R. Huebner, P. Braunstein* and B. Sarkar*, Dalton Trans. 2011, 40, 431 .

[11] “Invariant Oxidation State of Copper but not of Ruthenium in Complexes with Non-innocent N-(2-methyl-5,8-dioxo-5,8-dihydroquinolin-7-yl)acetamide: A Combined Structural, Electrochemical and Spectroelectrochemical Investigation.” A. Paretzki, H. S. Das, F. Weisser, T. Scherer, D. Bubrin, J. Fiedler, J. E. Nycx and B. Sarkar*, Eur. J. Inorg. Chem. 2011, 2413.

[10] “Energy Level Tailoring in a Series of Redox-Rich Quinonoid-Bridged Diruthenium Complexes Containing tmpa [tmpa = tris(2-pyridylmethyl) amine] as a Co-ligand .” F. Weisser, R. Huebner, D. Schweinfurth and B. Sarkar*, Chem. Eur. J. 2011, 17, 5727.

[9] “Straightforward Synthesis of Substituted p-Quinones: Isolation of a Key Intermediate and Use as a Bridging Ligand in a Diruthenium Complex.” H. S. Das, F. Weisser, D. Schweinfurth, C.-Y. Su, L. Bogani, J. Fiedler, and B. Sarkar*, Chem. Eur. J. 2010, 16, 2977.

[8] “Stabilising a Quinonoid-Bridged Dicopper(I) Complex by Use of a dppf (dppf = (diphenylphosphino)ferrocene) Backbone.” A. Paretzki, R. Pattacini, R. Huebner, P. Braunstein* and B. Sarkar*, Chem. Commun. 2010, 46, 1497.

[7] “N₂^•3-: Filling a Gap in the N₂^n- Series.” W. Kaim* and B. Sarkar*, Angew. Chem. 2009, 121, 9573.

[6] “Nicht unschuldig: chinoide Liganden.” D. Schweinfurth, F. Weisser and B. Sarkar*, Nachrichten aus der Chemie 2009, 57, 862.

[5] “1,2,3-Triazoles Through Click Reaction and Their Palladium and Platinum Complexes”. D. Schweinfurth, R. Pattacini, S. Strobel and B. Sarkar*, Dalton Trans. 2009, 9291.

[4] “First Structurally Characterised Mono- and Dinuclear Ruthenium Complexes Derived from Zwitterionic Quinonoid Ligands”. H. S. Das, A. K. Das, R. Pattacini, R. Hübner, B. Sarkar* and P. Braunstein*, Chem. Commun. 2009, 4387.

[3] “Combining Two Non-Innocent Ligands in Isomeric Complexes [Pt(pap)_mQ_n]⁰ (pap = Phenylazopyridine, Q = 3,5-Di-tert-butyl-benzoquinone)”. B. Sarkar*, R. Hübner, R. Pattacini and I. Hartenbach, Dalton Trans. 2009, 4653.

[2] “Structures, Redox and Spectroscopic Properties of PdII and PtII Complexes containing the Azo Functionality”. S. Roy, I. Hartenbach and B. Sarkar*, Eur. J. Inorg. Chem. 2009, 2553.

[1] “Synthesis of Bis(Phosphino-ferrocenyl) Copper Complexes from Zwitterionic Quinonoid Ligands, their Structural and Redox Properties”. P. Braunstein*, D. Bubrin, and B. Sarkar*, Inorg. Chem. 2009, 48, 2534 .

Buchkapitel und Übersichtsartikel

[4] “Mit Click zu neuen Liganden.” D. Schweinfurth, N. Deibel, F. Weisser and B. Sarkar*, Nach. aus der Chem. 2011.

[3] “Nicht unschuldig: chinoide Liganden.” D. Schweinfurth, F. Weisser and B. Sarkar*, Nachrichten aus der Chemie 2009, 57, 862.

[2] “Mixed-valent intermediates as ideal targets for spectroelectrochemistry (SEC)”. W. Kaim, B. Sarkar and G. K. Lahiri, in W. Kaim and A. Klein, Eds. Spectroelectrochemistry, RSC 2008, pp 68-90.

[1] “Mixed valency in ruthenium complexes—Coordinative aspects”. W. Kaim and B. Sarkar, Coord. Chem. Rev. 2007, 251, 584.

Vorträge

[27] "Metal Complexes of ‘Click’ derived 1,2,3-Triazole Ligands: From Abnormal Carbenes to Magnetic Bistability." B. Sarkar, Institutskolloquim, März 2011, Indian Institute of Technology Guwahati, Guwahati, Indien.

[26] "Metal Complexes of ‘Click’ derived 1,2,3-Triazole Ligands: From Abnormal Carbenes to Magnetic Bistability." B. Sarkar, Institutskolloquim, März 2011, Indian Institute of Technology Bombay, Mumbai, Indien.

[25] "Metal Complexes of ‘Click’ derived 1,2,3-Triazole Ligands: From Abnormal Carbenes to Magnetic Bistability." B. Sarkar, Institutskolloquim, März 2011, Delhi University, Delhi, Indien.

[24] "Metallkomplexe der Non-innocent Liganden: Redox-reiche Systeme und Ungewöhnliche chemische Reaktivität." B. Sarkar, Februar 2011, Freie Universität Berlin, Deutschland.

[23] "Metal Complexes of Non-innocent Ligands: Redox-rich Systems and Unprecedented Chemical Reactivities", B. Sarkar, Institutskolloquim, Oktober 2010, Technische Universität München, Deutschland.

[22] "Controlling Metal-Metal Interaction, Electron Density Distribution and Coordination Switching in Quinonoid Bridged Metal Complexes", B. Sarkar, Institutskolloquim, Mai 2010, Georg-August-Universität Göttingen, Deutschland.

[21] "Controlling Metal-Metal Interaction, Electron Density Distribution and Coordination Switching in Quinonoid Bridged Metal Complexes", B. Sarkar, Stanford University, März 2010, Palo Alto, U. S. A.

[20] "Energy Level Tailoring in a Series of Quinonoid Bridged Diruthenium Complex with tmpa as Co-ligand", B. Sarkar, F. Weisser, R. Hübner, 239th ACS National Meeting, März 2010, San Francisco, U. S. A.

[19] "Ungewöhnlicher Beispiel einer durch Koordination von Thioether ausgelösten Freisetzung von p-Cymol aus einem chinoidverbrückten Diruthenium-Komplex", B. Sarkar, D. Schweinfurth, H. S. Das, Chemiedozententagung, März 2010, Giessen, Deutschland.

[18] "Chinoide Ligangen in der Koordinationschemie: Ungewöhnliche Reaktionen, Strukturen und Elektronische Eigenschaften", B. Sarkar, Vorstellungsvortrag, Universität Stuttgart, Februar 2010, Stuttgart, Deutschland.

[17] "Chinoid Liganden in der Koordinationschemie: Bioinspirierte Synthese, Strukturen und Elektronische Eigenschaften", B. Sarkar, Universität Erlangen-Nürnberg, Februar 2010, Erlangen, Deutschland.

[16] "Chinoid Liganden in der Koordinationschemie: Bioinspirierte Synthese, Strukturen und Elektronische Eigenschaften", B. Sarkar, Universität Essen-Duisburg, Januar 2010, Essen, Deutschland.

[15] "Chinoid Liganden in der Koordinationschemie: Ungewöhnliche Reaktionen, Strukturen und Elektronische Eigenschaften", B. Sarkar, Institutskolloquim, Oktober 2009, Universität Regensburg, Deutschland

[14] "Chinoid Liganden in der Koordinationschemie: Bioinspirierte Synthese, Elektronentransfer und Katalyse", B. Sarkar, Universität Bayreuth, Juli 2009, Bayreuth, Deutschland.

[13] "Neue Chinoid Liganden und ihre Metallkomplexe", B. Sarkar, Institutskolloquim, Juli 2009, Johann-Wolfgang-Goethe-Universitaet, Frankfurt am Main, Deutschland.

[12] "Metallkomplexe der isomeren Chinoid-Liganden: Synthese und Korrelation zwischen Strukturen, Redox- und spektroskopischen Eigenschaften", B. Sarkar, Ludwig-Maximilians-Universität, Mai 2009, München, Deutschland.

[11] "Metallkomplexe der isomeren Chinoid-Liganden: Synthese und Korrelation zwischen Strukturen, Redox- und spektroskopischen Eigenschaften", B. Sarkar, Chemiedozententagung, März 2009, Göttingen, Deutschland.

[10]"Neue Chinoid Liganden und ihre Metallkomplexe", B. Sarkar, Institutskolloquim, Januar 2009, Technische Universitaet Kaiserslautern, Deutschland.

[9] "Trapping the Guilty: Determining Oxidation State Combinations in Complexes Containing Two Potentially Non-Innocent Ligands", B. Sarkar, 238th ACS National Meeting, August 2008, Philadelphia, U.S.A.

[8] "Metal Compounds of the Superoxide Radical", B. Sarkar, Kolloquim, SFB 706, Universität Stuttgart, Juni 2008, Stuttgart, Deutschland.

[7] "Spin-Orbit Coupling Effects in EPR of Transtion Metal Complexes", B. Sarkar, COST Workshop, Dezember 2007, Strasbourg, Frankreich.

[6] "Mixed-Valent Complexes Bridged by a Radical Anion Ligand", B. Sarkar, 234th ACS National Meeting, August 2007, Boston, U.S.A.

[5] "Mixed-Valency in Diruthenium Complexes: Coordinative Aspects", B. Sarkar, Institutskolloquim, Mai 2007, Institut für Anorganische Chemie, Universität zu Köln, Köln, Deutschland.

[4] "Mixed-valency in Diruthenium Complexes: Variations on a Popular Theme", B. Sarkar, Workshop of the Graduate College in Saarbrücken, Deutschland, Deutsche Französische Hochschule (DFH), November 2005.

[3] "High Field EPR of Dinuclear Transition Metal Complexes", B. Sarkar, Graduate College Magnetic Resonance Workshop, Februar 2004, Hirschegg, Östereich.

[2] "High Field EPR Spectroscopy of Diruthenium Complexes", B. Sarkar, Graduate College Magnetic Resonance Workshop, Oktober 2003, Würzburg, Deutschland.

[1] "Electronic Coupling Across Tetrazine Bridges", B. Sarkar, Graduate College Magnetic Resonance Workshop, Oktober 2002, Rügheim, Deutschland.

Poster

[11] "Tuning of the π-System in Zwitterionic Benzoquinonemonoimines Through Metal Coordination". B. Sarkar, 14. Vortragstagung der Woehler-Vereinigung fuer Anorganische Chemie, GDCh, Oktober 2008, München, Deutschland.

[10] "Stepwise Oxidation and Reduction of Symmetrical Tris(Ferrocenyl Copper) Complexes with Conjugated Tris-Bidentate dpq Bridging Ligands (dpq = Substituted Diquinoxalino [2,3-a:2/,3/-c] Phenazine)". S. Roy, B. Sarkar, J. Fiedler, W. Kaim, 14. Vortragstagung der Woehler-Vereinigung fuer Anorganische Chemie, GDCh, Oktober 2008, München, Deutschland.

[9] "Ruthenium Complexes of Non-Innocent Ligands: Structural and Electronic Aspects". A. K. Das, B. Sarkar, J. Fiedler, S. Zalis, W. Kaim, 14. Vortragstagung der Woehler-Vereinigung fuer Anorganische Chemie, GDCh, Oktober 2008, München, Deutschland.

[8] "Structural and Redox Properties of Ferrocenyl-Copper Complexes Containing Potentially Zwitterionic Ligands". B. Sarkar, D. Bubrin, P. Braunstein, 4th EuCHEMS Conference on Nitrogen Ligands in Coordination Chemistry, Metal-Organic Chemistry, Bio-Inorganic Chemistry and Homogenous Catalysis, August 2008, Garmisch-Partenkirchen, Deutschland.

[7] "Preparation of a New Quinoxaline Ligand and its Pt(II) Complex: Structural and Electronic Properties". E. Bulak, W. Kaim, B. Sarkar, I. Hartenbach, J. Fiedler, T. Schleid, T. Varnali, 236th ACS National Meeting, August 2008, Philadelphia, U.S.A.

[6] "New Platinum Group Complexes with a Tridentate Non-Innocent Ligand".
R. Huebner, B. Sarkar, D. Bubrin, I. Hartenbach, J. Fiedler, T. Schleid, W. Kaim, 236th ACS National Meeting, August 2008, Philadelphia, U.S.A.

[5] "Stability of Mononuclear CuI Complexes with a-Azo-Carbonyl Ligands Using 1,1/-Bis(Diphenylphosphino) Ferrocene (dppf) Coordination". S. Roy, B. Sarkar, M. Sieger, J. Fiedler, W. Kaim, GDCh, Wissenschaftsforum, Chemie, September 2007, Ulm, Deuschland.

[4] "Structures and Redox Properties of Metal Complexes of the Electron-Deficient Diphosphine Chelate Ligand R, R-Quinox-P". A. K. Das, E. Bulak, B. Sarkar, J. Fiedler, W. Kaim, International Congress of Young Chemists, ‘Young Chem 2007’, 2007, Jurata, Polen.

[3] "Switch of Spin Combinations Through Weak Cu(II)-S Interation Related to Type I Copper Proteins". S. Ye, W. Kaim, B. Sarkar, F. Lissner, T. Schleid, J. van Slageren, J. Fiedler, 12th International Conference on Biological Inorganic Chemistry (ICBIC-12), 2005, University of Michigan, Ann Arbor, U.S.A.

[2] "The Metal-NO Interaction in the Simple Redox System [Cl5Os(NO)]n-, n = 1-3: Structural and Spectroscopic Effects". P. Singh, B. Sarkar, J. Fiedler, S. Zalis, W. Kaim, Advanced Techniques and Applications of EPR. The 38th Annual International Meeting, März 2005, University of Bath, Großbritannien.

[1] "High-frequency EPR study of reduced diruthenium and dirhenium polypyridine complexes based on the 1,2,4,5-tetrazine radical bridge". B. Sarkar, S. Frantz, C. Duboc, W. Kaim, Abschlusskolloquim of the Priority Program (SPP1051) ‘High Field EPR in Chemistry, Physics and Biology’, DFG, Februar 2005, Deutschland.