Research Areas

► Reactivity of N-heterocyclic phosphanes: bond activation and ring fragmentation

► Cationic, neutral, and anionic PN-heterocycles with delocalised pi-systems

► PN-heterocycles as ligands for complexes

Reviews:
• D. Gudat, "Cationic Low Coordinated Phosphorus Compounds as Ligands: Some Recent Developments", Coord. Chem. Rev. 1997,173, 71-106.
• D. Gudat, "Recent Developments in the Chemistry of N-Heterocyclic Phosphines", Topics in Heterocyclic Chemistry , Springer Verlag: Berlin 2010, 21, 67-103.
• D. Gudat, "Diazaphospholenes: N-Heterocyclic Phosphines between Molecules and Lewis Pairs", Acc. Chem. Res. 2010, 43, 1307-1316.

Selected results:
• S. Burck, D. Gudat, M. Nieger, C.A. Schalley, T. Weilandt, " Phosphazene vs. Diazaphospholene PN-Bond Cleavage in Spirocyclic cyclo -Diphosphazenes ", Dalton Trans. 2008, 3478-3485.
• D. Schmid, S. Loscher, D. Gudat, D. Bubrin, I. Hartenbach, T. Schleid, Z. Benko, L. Nyulászi, "Benzo-1,3,2-diazaphospholide and Benzo-1,3,2-diazaphospholium: An Isoelectronic Aromatic Anion-Cation Pair", Chem. Commun. 2009, 830-832.
• D. Förster, F. Ehret, H. Dilger, M. Nieger, D. Gudat, M. Nieger, L. Nyulászi, N. Shore, "An insight into the reversible dissociation and chemical reactivity of a sterically encumbered diphosphane", Eur. J. Inorg. Chem.2012, 3989-3994.

► Neutral and cationic analogues of N-heterocyclic carbenes with the elements Sn, Pb, P, As, Sb: 
their synthesis, structure and bonding, and chemical reactivity

Selected results:
• D. Gudat, A. Haghverdi, H. Hupfer, M. Nieger, "Stability and Electrophilicity of Phosphorus Analogues of Arduengo Carbenes - An Experimental and Computational Study", Chem. Eur. J. 2000, 3414 - 3425.
• T. Gans-Eichler, D. Gudat, M. Nieger, "Zinn-Analoga von 'Arduengo-Carbenen': Synthese von 1,3,2-Diazastannolen und Transfer von Sn-Atomen zwischen einem 1,3,2-Diazastannol und einem Diazadien", Angew. Chem. 2002,114, 1966-1969.
• D. Gudat, T. Gans-Eichler, M. Nieger, "Synthesis and Unprecedented Oxidation of a Cationic Sb-Analogue of an Arduengo's Carbene", Chem. Commun . 2004 , 2434-2435.
• T. Gans-Eichler, D. Gudat, K. Nättinen, M. Nieger, "On the transfer of Sn- and Ge-Atoms from N-heterocyclic stannylenes and germylenes to diazadienes", Chem. Eur. J . 2006 , 12 , 1162-1173.

►"Umpolung" of P-H bonds in phosphanes and their synthetic application

► Bond activation in N-heterocyclic phosphanes

► Chemistry of diphosphanes with "polar" homonuclear P-P bonds

►Catecholphosphanes for template controlled assembly of heterobimetallic complexes and their application in catalysis

Reviews:
• D. Gudat, "Diazaphospholenes: N-Heterocyclic Phosphines between Molecules and Lewis Pairs", Acc. Chem. Res. 2010, 43, 1307-1316.

Selected results:
• S. Burck, D. Gudat, M. Nieger, W.W. du Mont, "P-Hydrogen-Substituted 1,3,2-Diazaphospholenes: Molecular Hydrides", J. Am. Chem. Soc. 2006, 128, 3946-3955.
• S. Chikkali, D. Gudat, M. Niemeyer, "Template controlled self-assembly of bidentate phosphine complexes with hemilabile coordination behaviour", Chem. Commun. 2007, 981-983.
• S. Burck, D. Gudat, M. Nieger, "Metal-assisted, reversible phosphinyl-phosphination of the carbon-nitrogen triple bond in a nitrile", Angew. Chem. 2007, 119, 2977-2980.
• S. Burck, K. Götz, M. Kaupp, M. Nieger, J. Weber, J. Schmedt auf der Günne, D. Gudat, "Diphosphines with Strongly Polarized P-P Bonds: Hybrids between Covalent Molecules and Donor-Acceptor Adducts with Flexible Molecular Structures", J. Am. Chem. Soc. 2009, 131, 10763-10774.
• S. H. Chikkali, D. Gudat, F. Lissner, M. Niemeyer, T. Schleid, M. Nieger , "Template controlled assembly of ditopic catechol phosphines: A strategy to generate complexes of bidentate phosphines with different bite angles", Chem. Eur. J. 2009, 15, 482-491.
• D. Förster, F. Ehret, H. Dilger, M. Nieger, D. Gudat, "An insight into the reversible dissociation and chemical reactivity of a sterically encumbered diphosphane", Eur. J. Inorg. Chem.2012, 3989-3994.

► Application of multinuclear NMR for elucidation of structure and dynamics of molecular species

►In-situ characterisation of thermodynamically or kinetically instable species in equilibria

► ³¹P,X-Correlations for the analytical characterisation of phosphorus containing compounds

►NMR in solid state and solution for the characterisation of structure and bonding in molecular species

Reviews:
• D. Gudat, "Applications of Heteronuclear X,Y-Correlation Spectroscopy in Organometallic and Organoelement Chemistry ", Annual Reports in NMR Spectroscopy, Ed. G.A. Webb, Academic Press: San Diego 1999, 38, 139-202.
• D. Gudat, "Applications of Heteronuclear X,Y-Correlation Spectroscopy in Organometallic and Organoelement Chemistry: Recent Developments", Annual Reports in NMR Spectroscopy, Ed. G.A. Webb, Academic Press: San Diego 2003,  51, 59-103.

Selected results:
• S. H. Chikkali, D. Gudat, S. Komath Mallissery, " On the Immobilization of Catechol-Phosphane Palladium Complexes on Titania", Eur. J. Inorg. Chem. 2008, 5603-5608.
• B. R. Aluri, S. Burck, D. Gudat, M. Niemeyer, O. Holloczki, L. Nyulászi, P. G. Jones, J. Heinicke, "Ambident PCN-Heterocycles: N- and P-Phosphanylation of Lithium 1,3-Benzazaphospholide", Chem. Eur. J. 2009, 15, 12263-12272.
• S. Burck, K. Götz, M. Kaupp, M. Nieger, J. Weber, J. Schmedt auf der Günne, D. Gudat, "Diphosphines with Strongly Polarized P-P Bonds: Hybrids between Covalent Molecules and Donor-Acceptor Adducts with Flexible Molecular Structures", J. Am. Chem. Soc. 2009, 131, 10763-10774.
• V. Mirabello, M. Caporali, V. Gallo, L. Gonsalvi, D. Gudat, W. Frey, A. Ienco, M. Latronico, P. Mastrorilli, M. Peruzzini, "Solution and Solid-State Dynamics of Metal-Coordinated White Phosphorus", Chem. Eur. J. 2012, 18, 11238-11250.