STRUCTURE OF PALLADIUM-CHLORIDE COMPLEXES WITH ORGANIC SULFIDES IN SOLUTIONS

EXAFS spectroscopy was used to study the influence of various factors on the structure of PdCl2 completes with organic sulfides in organic s olvents. Absolute interatomic distances in the first coordination sphe re of Pd were determined for the complexes [PdCl2 . 2(C6H13)(2)S] (I), [PdCl2 .(C6H13)(2)S](2) (II) [PdCl2 . 2(C6H5)(2)S] (III), and [PdCl2 .(C4H9)S(C4H7)] (IV) and for their solutions in some organic solvents. Our hypothesis that aromatic solvent molecules are coordinated to pal ladium atoms through weak pi-bonds, which was proposed for complex (I) in benzene, is supported for benzene and pseudocumene solutions of co mplexes (I), (II), and (III). It is shown that the characteristic feat ures of the specific solvation of the completes under study are determ ined by the electron properties and spatial structures of the molecule s as well as by the donating abilities of the solvents.