Synthesis,Crystal Structure and Spectroscopic Properties of an Oximato Bridged Cu(II) Dimer |
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| Authors: | Jnan Prakash Naskar Chiranjan Biswas Liping Lu Miaoli Zhu |
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| Institution: | (1) Department of Chemistry, Jadavpur University, Calcutta, 700 032, India;(2) Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, 92 Wucheng Road, Taiyuan, Shanxi, 030006, People’s Republic of China |
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| Abstract: | Abstract Schiff-base condensation of a equimolar proportion of diacetyl-monoxime monohydrazone and 1-methylimidazole-2-carboxaldehyde
in methanol gives rise to the imidazole azine, 3-(1-methylimidazol-2-yl)methylenehydrazonobutan-2-one oxime(HL). Reaction
of 1:1 stoichiometric proportion of HL with copper(II)perchlorate hexahydrate in methanol yields a dimeric oximato bridged
copper compound, Cu2L2(H2O)2](ClO4)2 (1). The compound is characterized by C, H and N analyses, FT-IR, ESI–MS, conductivity measurement, UV–Vis spectra and X-ray single
crystal diffraction. The title compound (1) crystallizes in the monoclinic space group P21/c with a = 6.8533 (8), b = 18.413 (2), c = 11.7399 (14) ?, β = 93.685 (2)°, V = 1478.4 (3) ?3 and Z = 2. The geometry around each copper center is distorted square pyramidal. The copper(II) dimer shows antiferromagnetic interaction
mediated by symmetric disposition of oximato groups. |
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