Two novel 2-D homometallic cyano-bridged complexes: Synthesis, structures and fluorescent properties

Synthesis, structure and photoluminescent properties of two novel 2-D cyano-bridged complexes {[M2(μ2-L)(μ2-CN)2 (CN)2] · H2O}n (M = Cd, Zn; L = 1,4-bis(pyridine-2-ylmethyl)piperazine) are presented. Both of them crystallize in the monoclinic space group of C2/c and possess a cyano-bridged 2-D brick wall-like layer structure. Both hydrogen bonds and π–π interactions play important roles in the stabilization of their solid state structure. The emission spectra of 1 and 2 in solid state show strong blue-light emission.