2013. 54, 4 – UDC 548.73:547.13:546.48 THERMOLYSIS PREPARATION OF CADMIUM(II) OXIDE NANOPARTICLES FROM A NEW THREE-DIMENSIONAL CADMIUM(II) SUPRAMOLECULAR COMPOUND M. Payehghadr1, A. Morsali2 1Department of Chemistry, Payame Noor University, Karaj, Islamic Republic of Iran 2Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, Tehran, Islamic Republic of Iran E-mail: morsali_a@yahoo.com Received February, 28, 2012 The reaction of cadmium(II) chloride and 4-pyridine carboxylic acid (4-Hpyc) produces a new three-dimensional supramolecular compound [Cd(4-pyc)2(H2O)4]n (1). <...> Compound 1 is characterized by IR spectroscopy and elemental analyses. <...> The single crystal X-ray data show an infinite three-dimensional structure formed by the hydrogen bonding and — stacking interactions. <...> The CdO nanoparticles are obtained by direct calcination at 400 C, 500 C and 600 C in the air atmosphere as well as by thermolysis in oleic acid at 200 C. The obtained cadmium(II) oxide nanoparticles are characterized by X-ray diffraction and scanning electron microscopy. <...> This study demonstrates another potential application of cadmium(II) supramolecular compounds in the preparation of nanoscale cadmium(II) oxide materials with a specific size and morphologies. <...> INTRODUCTION During the last two decades, supramolecular compounds and especially coordination polymers have received great attention and the number of their synthesized compounds is still growing, which is mainly due to their potential application in various fields such as microelectronics, nonlinear optics, ion exchange, catalysis, gas storage, separation and luminescence [ 1—6]. <...> In modern coordination chemistry the role of most metals as clustering centers for ligands appears to be predictable and the coordination number and the coordination geometry can be extrapolated for most of the common metal/ligand combinations with quite high certainty. <...> The spherical d10 configuration is associated with a flexible coordination environment so that geometries of these complexes can vary from tetrahedral (CN = 4) to dodecahedral (CN = 8) and severe distortions in the ideal polyhedron easily occur. <...> Cadmium(II) oxide have been extensively used as transparent conducting oxide (TCO) materials. <...> Bulk cadmium(II) oxide (CdO) is <...>