Reaction of sterically hindered imidazolate complexes with iron porphyrins

Abstract

Reaction of sterically hindered copper(II) or nickel(II) imidazolate complexes derived from imidazole-2-carbaldehyde with iron porphyrins results in the formation of monoadducts which are dinuclear complexes. The spin states of the iron atoms in some of the adducts have been determined from variable-temperature magnetic susceptibility measurements to be admixed-intermediate spin or intermediate spin.