Compounds of the triphenyltin(II) ion

Abstract

Ionic compounds R⁺SnPh₃^-, where R = Me₄N, (Ph₃P)₂N, Na(15-crown-5) or K(18-crown-6), are prepared from alkali metal derivatives, Ph₃SnM, by reactions in liquid ammonia which yield the products as yellow crystalline solids, soluble in a weakly basic solvent. N.m.r. and vibrational spectra of the Ph₃Sn^- anion, a pyramidal species with C_3V symmetry, and the cationic complexes [M(crown)]⁺, are reported and assigned.