Synthesis, crystal structure and luminescent properties of a thiocyanato bridged two-dimensional heteronuclear polymeric complex of cadmium(II) and copper(II)

A novel heteronuclear polymeric complex Cd(SCN)3Cu(en)2NO3 (1) (en = ethylenediamine) has been synthesized and structurally characterized. The Cd(II) atom is surrounded by three S atoms and three N atoms from four 1,3-μ-SCN− and two 1,1,3-μ-SCN− to attain a distorted octahedral coordination geometry. Six Cd(II) centers are linked by twelve thiocyanato bridges to form hexagonal metallocyclic unit [Cd6(SCN)12] and extend a 2D network. Moreover, a 1,1,3-μ-SCN− links two cadmium and one copper metal atoms. The luminescent properties of 1 in the solid state were investigated.