Synthesis, characterization, and crystal structure determination of two copper(II) complexes: [Cu(dm4bt)Cl2(DMSO)] and [{Cu(dm4bt)(H₂O)(tpht) } H₂O]_n

چکیده مقاله

Copper complexes, [Cu(dm4bt)Cl₂(DMSO)] (1) and [{Cu(dm4bt)(H₂O)(tpht)} H₂O]_n (2) (dm4bt, 2,2′-dimethyl-4,4′-bithiazole; tpht, terephthalate), have been synthesized and their crystal structures were determined by X-ray crystallography. Complex 1 was prepared from a reaction of CuCl₂ 2H₂O with dm4bt and terephthalic acid in a mixture of methanol, water, and DMSO. Complex 2 was prepared from a reaction of CuCl₂ 2H₂O with dm4bt, terephthalic acid, and ethylene diamine in a mixture of methanol and water. The two complexes were characterized by IR, UV-Vis spectroscopy, and single-crystal structure. Complex 2 was also characterized by electron paramagnetic resonance spectra. Complex 1 is a monomer while 2 is a coordination polymer. This copper tpht polymer has a cis-configuration of tpht rings opposed to zigzag chains with anti-configuration usually reported in the literature. © 2010 Taylor & Francis.