HYDROGEN AND COORDINATION BONDS IN ISOSTRUCTURAL SYSTEMS. ARE HYDROGEN BONDS UNIQUE?

Article abstract of DOI:10.1016/0022-2860(88)80097-8

Reliable spectral criteria which allow comparison of the hydrogen and coordination bonds in isostructural systems are suggested.The model systems consist of ArXH and ArXMRn (X=O, S, N; M=Hg, Sn, Pb, Sb; Ar=C6H4Y where Y=COR, NO2, C5H4N, etc.) which interact with various N-, P- and O-bases.The conditions on which the ν_XM vibrations are local, have been established.Examination of thiol derivatives reveals the similarity of spectral (IR, Raman) effects for coordination and hydrogen bonds in the ν_XM and ν_XH regions, respectively.The character of dependence of a proton and a bul ky organometallic cation transfer on medium, a heteroatom X or a base is shown to be similar.Some quantitative and qualitative relationships between XH and XM bond polarities and the capacity to form complexes, ionic pairs or ions are found.Comparison of spectral properties of isostructural systems with hydrogen and coordination bonds does not reveal the uniqueness of the H bond.