Spin-spin coupling in copper(II) complexes of Pentane-2,4-dione

Abstract

A number of complexes in the series Cu(acac)(X), where X = OMe^-, OEt^-, OCH₂Ph^-, N₃^- and pz^- (the pyrazolate anion), have been prepared and their magnetic properties determined down to liquid nitrogen temperatures. Also reported is the complex Cu₂(acac)₂(OH)(pz). In each case, the magnetism is interpreted in terms of spin coupling within a binuclear unit. All coupling is antiferromagnetic in nature, except for X = N₃^- which appears to be weakly ferromagnetic.