Preparation and Reactivity of Some Phenyl-bismuth(III) Quinolin-8-olate Derivatives

Abstract

The bimetallics [ PhBi (Ox)₂( NaX )n] (Ox^- = quinolin-8-olate: X = Cl , Br or I), containing variable amounts of sodium halides, have been prepared by reaction of PhBiX₂ with Na(Ox) (mole ratio 1 : 2) or of Ph₂BiX with Na(Ox) (mole ratio 1 : 1) in ethanol. A similar preparation has given [ PhBi ( MeOx )₂( NaI )n] ( MeOx - = 2-methylquinolin-8-olate) . The bimetallics have been characterized by X-ray powder photography, f.a.b . mass spectrometry and ¹H n.m.r. and electronic spectroscopy. Sodium halide-free PhBi (Ox)₂ was obtained from the reaction of Ph₂BiCl with Na(Ox) in the presence of 15-crown-5, or from treatment of PhBiI₂ or Ph₂BiI with NBu₄(Ox). Reaction of equimolar amounts of PhBiI₂ and Na(Ox) gives Bi(Ox)₂I, which can also be obtained from BiI₃ and Na(Ox) in a 1:1 or 1:2 stoichiometry. Treatment of PhBiI₂ with M(0x) (M = Na or K) in a 1:3 mole ratio yields [ MPhBi (Ox)₃] bimetallics, which appear to contain both chelating and unidentate Ox ligands from their electronic spectra.