Investigation on the coordination modes: Syntheses, characterization and crystal structures of diorganotin (IV) dichloride with 4(5)-imidazoledithiocarboxylic acid

摘要

A series of diorganotin (IV) complexes of the types of R2SnCl(SSCC3H3N2) (R = CH3 1, "Bu 2, C6H5 3 and C6H5CH2 4), R2Sn(SSCC3H3N2)(2) (R = CH3 5, "Bu 6, C6H5 7 and C6H5CH2 8) and R2Sn(SSCC3H2N2) (R = CH3 9, "Bu 10, C6H5 11 and C6H5CH2 12) have been obtained by reactions of 4(5)-imidazoledithiocarboxylic acid with diorganotin (IV) dichlorides in the presence of sodium ethoxide. All complexes are characterized by elemental, IR, H-1, C-13 and Sn-119 NMR spectra analyses. Also, the complexes 1, 7 and 9 are characterized by X-ray crystallography diffraction analyses, which reveal that the complex 1 is monomeric structure with five-coordinate tin (IV) atom, the complex 7 is monomeric structure with six-coordinate tin (IV) atom and the complex 9 is one-dimensional chain with five-coordinate tin (IV) atom. (c) 2005 Elsevier B.V. All rights reserved.