Synthesis and magnetism of multi-dimensional cyanide-bridged bimetallic assemblies

The structures and magnetism of complex-based metal assemblies derived from [M(CN)(6)](n-) (M = Cr3+, Mn3+, Fe3+, Co3+, Fe2+; n = 3, 4) and coordinatively unsaturated [M-A(L)(x)](m+) (M-A = Mn2+, Ni2+, Cu2+, Mn3+, Fe3+; L = polyamine ligand, salen derivatives) are reviewed. The reaction of the constituents in different ratios, in the absence or presence of an appropriate cation or anion and by the change of ligand L provides multi-dimensional bimetallic assemblies of various networks extended through M-CN-M-A-NC- linkages. The magnetic properties of the assemblies are discussed with respect to their network structures and M-A/M combinations. These assemblies provide significant insights into magnetostructural correlation and design of magnetic materials. (C) 2000 Elsevier Science S.A. All rights reserved.