2013. 54, 4 – UDC 548.73:541.49:546.48 STRUCTURAL CHARACTERIZATION OF DICYANIDOBIS(N,N-DIMETHYLTHIOUREA-xS)CADMIUM(II) M.R. Malik 1, T. Rьffer 2, H. Lang2, A.A. Isab3, S. Ali1, S. Ahmad4 , H. Stoeckli- Evans5 5Institute of Physics, University of Neuchвtel, Neuchвtel, Switzerland Received February, 16, 2012 1Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan 2Technische Universitдt Chemnitz, Institut fьr Chemie, Lehrstuhl fьr Anorganische Chemie, Chemnitz, Germany 3Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia 4Department of Chemistry, University of Engineering and Technology, Lahore, Pakistan E-mail: saeed_a786@hotmail.com . 763 – 767 A cadmium(II) complex dicyanidobis(N,N-dimethylthiourea-S) cadmium(II) [Cd(Dmtu)2(CN)2] (1) is prepared and its structure in the solid state is determined by single crystal X-ray structural analysis. <...> The cadmium(II) ion is four-coordinate having a distorted tetrahedral geometry composed of two cyanide C atoms and two thione S atoms of N,N-dimethylthiourea (dmtu). <...> The molecular structure is stabilized by intermolecular N—H N(CN) hydrogen bonding interactions that lead to a 3D network structure. <...> The complex was also characterized by IR and NMR spectroscopy. <...> Except polymeric [L2CdX2] complexes, the coordination environment around Cd(II) is tetrahedral in these complexes. <...> In polymeric [L2CdX2], the structural arrangements are based on a distorted octahedral geometry [19—21 ]. <...> Some examples of [L4CdX2] type complexes, in which cadmium(II) shows significant distortions from the octahedral geometry, have also been reported [ 24, 25 ]. <...> Whereas numerous adducts of cadmium halides with thiourea ligands have been structurally characterized [ 9—19, 24 ], the number of complexes defined with Cd(CN)2 is much more limited [ 8 ]. <...> We are particularly interested in studying the coordination chemistry of cyanido complexes of d10 metals such as silver(I), gold(I), and mercury(II), and in this regard we have already reported the spectroscopic and structural characterization of a number of silver(I) and gold(I) cyanide complexes of thiones [26 <...>