A novel three-dimensional mixed bridging-ligand complex [Cu2II(tn)2][FeII(CN)6]·H2O with an unexpected 1,3-diaminopropane bridge

Reaction of K3[Fe(CN)6] with [Cu(tn)2](ClO4)2 (tn=1,3-diaminopropane) leads to a novel mixed cyano and tn bridged three-dimensional (3D) bimetallic assembly [Cu2II(tn)2][FeII(CN)6]·H2O (1), in which each [Fe(CN)6]4− anion connects six copper(II) cations via six CN− groups, whereas each copper(II) cation is linked to three [Fe(CN)6]4− ions and two other copper(II) ions through Cu-NC-Fe and Cu-tn-Cu linkages, respectively. Magnetic studies reveal weak antiferromagnetic interactions between the nearest CuII (S=1/2) ions through the diamagnetic [Fe(CN)6]4− anion.