A bimetallic cyano-bridged complex {[Mn(ImH)(H 2 O) 2 ] 2 [Mo(CN) 8 ]·4H 2 O} n (ImH  =  imidazole) has been prepared and characterized. Single-crystal X-ray analysis reveals that the complex crystallizes in space group C 2/c with a   =  15.665(2), b   =  14.616(2), c   =  12.307(2)  Å, α  =  90, β  =  108.31(1), γ  =  90°. The structure of the complex demonstrates a three-dimensional network through cyano-bridges. Each Mo(IV) atom has six –CN–Mn linkages and two terminal cyano ligands arranged in a square antiprismatic arrangement. The Mn(II) atom is in a distorted octahedral environment formed by three MoCN  →  Mn linkages along with one imidazole and two water molecules in cis configuration. Variable temperature magnetic susceptibility shows an antiferromagnetic coupling between Mn 2+ ions through the NC–Mo IV –CN diamagnetic bridges within the three-dimensional network. The IR spectra have also been investigated. [ABSTRACT FROM AUTHOR]