Assembly and Crystal Structure of a Novel 1-D Coordination Polymer of Copper (II) with Thiocyanate and 4-Cyanopyridine

A novel one-dimensional coordination polymer, Catena-poly [bis(4-cyano-pyridyl) copper(II)-di-thiocyanate], 1∞ [CuII-(cypy)2(μN.S-SCN)2] (cypy = 4-cyano-pyridyl), was synthesized in a solution reaction of Cu(NO3)2·3H2O, 4-cyano-pyridine and KSCN in mole ratio of 1:2:2 at room temperature. Its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic crystal system, space group P21/c with cell parameters a = 1.0719(2), b = 1.8441(4), c =0.9144(2) nm, β = 110.49(3)° and Z = 4. A full-matrix least-squares refinement gave R1 = 0. 0393 and wR2= 0.0916 for 1554 reflections having 1 >2σ(I). The crystal is thermally stable up to approximately 170 °C.