Synthesis and Spectroscopic Characterization of Bis and Mono Halide (Antimony(III) O,O’-Ditolyl dithiophosphate) Compounds

Abstract

Antimony complexes of the type (Sb{S2P(OR)2}nCl3-n) (where R = o-, m-, p-C6H4Me; n =1-2) have been obtained by the reaction of antimony(III) chloride with ammonium salts of O,O'-di(o-, m-, p-tolyl) dithiophosphates in 1:2 and 1:1 molar ratio by stirring followed by refluxing in benzene. All these complexes have been characterized by elemental analysis and IR, 1 H and 31 P NMR spectroscopy. On the basis of experimental and spectroscopic studies distorted trigonal bipyramidal geometry (tbp) around antimony having a lone pair of electron, at axial position may be proposed for the complexes corresponded to ((o-, m- or p-MeC6H4O)2PS2SbCl2) while an octahedral geometry with a lone pair of electrons may be suggested for the complexes ({(o-,m- or p-MeC6H4O)2PS2}2SbCl).