Cobalt(III) Complexes with N,N′-Ethylene-bis(salicylideneaminate) and a Related Quadridentate Ligand

Abstract

Numerous six-coordinate cobalt(III) complexes with N,N′-ethylene-bis(salicylideneaminate) and N,N′-ethylene-bis [2-hydroxynaphthyl (1) -methyleneaminate], abbreviated as salen and nalen, respectively, have been synthesized and characterized. The complexes prepared are of the types [Co(salen)L₂]X, M^I [CoX₂(salen)], [CoX(salen)H₂O], [Co(nalen)L₂] and [CoX(nalen)L], where X and L denote a univalent anion and a neutral unidentate li-gand, respectively. All these complexes are diamagne-tic and trans-six-coordinate.