Synthesis and Characterisation of Oxovanadium(V) Derivatives of O,O-Bis(α-naphthyl, β-naphthyl and 2, 3, 5-trimethylphenyl)dithiophosphates

Abstract

Reactions of VOCl 3 with sodium salts of O,O′-bis(α-naphthyl, β-naphthyl or 2,3,5trimethylphenyl) dithiophosphate ligands, [{α-C 10 H 7 O-, β-C 10 H 7 O-, or (CH 3) 3 C 6 H 2 O} 2 PS 2 Na], in 1:3 molar ratio in toluene yielded new seven coordinated vanadium derivatives of the type [{(RO) 2 PS 2 } 3 VO] (where R = α-C 10 H 7 O-, β-C 10 H 7 O-and (CH 3) 3 C 6 H 2 O-). The reactions of [OGOVOCl] (where G =-CH 2 CH 2-or-CH 2 CH 2 CH 2-), with sodium salts of O,O′-bis(α-naphthyl, βnaphthyl or 2,3,5-trimethylphenyl) dithiophosphate ligands, [{α-C 10 H 7 O-, β-C 10 H 7 O-and (CH 3) 3 C 6 H 2 O} 2 PS 2 Na}, in 1:1 molar ratio in toluene were quite facile which afforded 5-coordinated soluble complexes corresponded to formula [OGOVOS 2 P(OR) 2 ]. These compounds have been characterized by elemental analysis (C, H, V and S), mass, IR and NMR (1 H, 13 C and 31 P) spectroscopic studies which indicates bidentate linkages of dithiophosphate moieties leading to pentagonal bipyramidal and square pyramidal geometry around the vanadium(V) atom.