Abstract
Hacettepe University, Department of Engineering Physics, Beytepe 06532, Ankara, Turkey Received 26 February 2004, revised 13 May 2004, accepted 24 May 2004 Published online 1 February 2005 Key words crystal structure, tri bromophenolate complexes, n-methyl imidazole complexes, cobalt(II) complex, copper(II) complex. PACS 61.66.Hq Bis(2,4,6-tribromophenolato)di(N-methyl imidazole)M(II), where M stands for cobalt and copper metals, was synthesized via reaction of the corresponding metal sulphate and 2,4,6-tribromophenolate in aqueous media in the presence of N-methyl imidazole and sodium hydroxide. Although various crystallization procedures were applied only cobalt complex was obtained as single crystals. The Co(II) ion has a distorted octahedral enviroment involving two O atoms and two N atoms of the Bis(2,4,6-tribromophenolato)di(N-methyl imidazole) ligand. Powder x-ray diffraction pattern of copper compound was used for cooper complex. For characterizations of complexes carbon, hydrogen and nitrogen elemental analysis, FTIR and UV spectroscopy, DSC thermal analysis and magnetic susceptibility measurements at room temperature were performed.
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