High-Spin Heteronuclear Cyanometalates: g-Tensors and Magnetic Properties of CrIIINiII n (n=2,3,4,5,6) and Heptanuclear CrIIICuII 6 Compounds

Abstract

Using the irreducible tensor operator technique we develop a computational approach to the problem of g-tensors for the heteronuclear polymetallic systems consisting of the arbitrary number of coupled paramagnetic ions. We deduce the effective g-values for the family of the heterometallic CrIIINiII n cyanometalates (n=2,3,4,5,6) possessing different topologies. For CrIIINiII 6 complexes a good fit to experimental μ(T) is achieved. For CrIIICuII 6 the local anisotropy of g for CuII ions is taken into account.