Dispersion-Driven Hydrogen Bonding: Predicted Hydrogen Bond between Water and Platinum(II) Identified by Neutron Diffraction

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Authors	RIZZATO Silvia BERGES Jacquelin MASON Sax A. ALBINATI Alberto KOZELKA Jiří
Year of publication	2010
Type	Article in Periodical
Magazine / Source	Angewandte Chemie International Edition
MU Faculty or unit	Faculty of Science
Citation
Web	http://onlinelibrary.wiley.com/doi/10.1002/anie.201001892/pdf
Field	Biophysics
Keywords	ab initio calculations; hydrogen bonds; neutron diffraction; platinum; X-ray diffraction
Description	We report here the first crystallographic evidence for a hydrogen-bonding-like interaction between a water molecule and a d8 metal ion, based on neutron diffraction. According to our HF and MP2 calculations, the interaction is almost entirely dispersion-driven and thus represents a limiting case of hydrogen bonding. We speculate that for square-planar d8 metal complexes of zero or negative charge, such hydrogen bonding with water molecules might affect the solvolysis mechanism and be at the origin of anomalously slow aquation rate constants previously reported for some PtII complexes.
Related projects:	Proteins in metabolism and interaction of organisms with the environment Molecular basis of cell and tissue regulations Biofyzikální výzkum struktur a funkcí biomolekul