Synthesis and spectroscopic studies of some heterobinuclear derivatives of bismuth(III)

Abstract

The reactions of chlorobis(dialkyldithiophosphato)bismuth(III), [{(RO) 2 P(S)S} 2 BiCl] with sodium tetraisopropoxoborate(III), NaB(OPr i ) 4 in 1: 1 molar ratio in refluxing benzene solution yield the corresponding heterobinuclear derivatives of the type [{(RO) 2 P(S)S} 2 Bi(m-OPr i ) 2 B(OPr i ) 2 ] [where R = Me(1); Et(2); Pr i (3); Pr n (4); and Bu n (5)]. All these derivatives are moisture sensitive, dark-brown, viscous liquids that are soluble in common organic solvents and have been characterised by elemental analyses and molecular weight measurements. Probable structures for 1-5 have been proposed on the basis of spectroscopic studies.