The title compound (C28H32CdCl2N4O2S2, Mr = 704.00) has been synthesized and characterized by elemental analysis and single-crystal X-ray diffraction. The Schiff base compound is a derivative of 5-chlorosalicylaldehyde. As expected, the molecular structure adopts a trans configuration about the central C=N double bond. It crystallizes in the monoclinic system, space group P21/n with a = 6.003(5), b = 16.490(15), c = 15.698 (14) , β = 94.523(12)o, V = 1549(2) 3, Z = 2, Dc = 1.509 g/cm3, F(000) = 716 and μ = 1.044 mm-1. A total of 7724 reflections were collected in the range of 2.47～25.01o by using an phi and omega scantechnique, of which 2695 were unique (Rint = 0.0341) and 2258 observed reflections with I > 2δ(I) were used in the structure solution and refinement. The complex assumes a distorted octahedral coordination geometry formed by four thiocyanate anions and two Schiff base ligands. The thiocyanate anion bridges the neigh- boring Cd(II) atoms to form the polymeric chains. The title compound (C28H32CdCl2N4O2S2, Mr = 704.00) has been synthesized and characterized by elemental analysis and single-crystal X-ray diffraction. The expected structure of the molecular structure by trans- formation of about 5-chlorosalicylaldehyde The central C = N double bond. It crystallizes in the monoclinic system, space group P21 / n with a = 6.003 (5), b = 16.490 (15), c = 15.698 , V = 1549 (2) 3, Z = 2, Dc = 1.509 g / cm3, F (000) = 716 and μ = 1.044 mm- 1. A total of 7724 reflections were collected in the range of 2.47 ~ 25.01 by using an phi and omega scan technique, of which 2695 were unique (Rint = 0.0341) and 2258 observed reflections with I> 2δ (I) were used in the structure solution and refinement. The complex assumes a distorted octahedral coordination geometry formed by four thiocyanate anions and two Schiff base ligands. The thiocyanate anion bridges the neigh- boring Cd (II) atoms to form the polymeric chalcone ins.