Extreme symbiosis: the facile one-step synthesis of the paramagnetic cobalt(III) complex of triphenylantimony, Col3(SbPh3)2, from the reaction of triphenylantimonydiiodine with unactivated coarse grain cobalt metal powder

Abstract

Triphenylantimony diiodine (2 equiv.) reacts with unactivated cobalt powder to yield the unexpected cobalt(III) complex Col₃(SbPh₃)₂; this five coordinate species represents a rare example of a paramagnetic cobalt(III) complex.