Synthesis of Some Novel Dinuclear Metal Complexes, Containing Both Square-Planar and Tetrahedral Metal Ions, by the Reactions of Coordinated Diamines with an α-Hydroxy Ketone

Abstract

Reactions between tris (propane-1,3-diamine)nickel(II) salts and 3- hydroxy-3-methylbutan-2-one in the presence of zinc(II) or cadmium(II) halides yield a series of di -oxygen-bridged dinuclear products which contain the square-planar nickel(II) complex of a 12-membered ligand ring one of whose members is either a zinc(II) or cadmium(II) halide. These complexes are thermally very stable but may be hydrolysed by water to give a complex of the corresponding α- imino alcohol.