Novel binuclear copper(II) complexes of di-2-pyridyl ketone N(4)-methyl, N(4)-phenylthiosemicarbazone: Structural and spectral investigations

Philip, Varughese and Suni, V and Kurup, Maliyeckal Prathapachandra R and Nethaji, Munirathinam (2005) Novel binuclear copper(II) complexes of di-2-pyridyl ketone N(4)-methyl, N(4)-phenylthiosemicarbazone: Structural and spectral investigations. In: Polyhedron, 24 (10).

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Abstract

Four binuclear complexes $[Cu(dptsc)Cl]_{2}.3H_{2}O(1)$,$[Cu(dptsc)Br]_{2}(2)$, $[Cu(dptsc)(\mu-N_{3}]_{2}(3)$ and $[Cu(dptsc)(NO_{3})]_{2}.H_{2}O(4)$ (where Hdptsc = di-2-pyridyl ketone N(4)-methyl,N(4)-phenylthiosemicarbazone) have been synthesized and physicochemically characterized. Each Cu(II) atom in the monomeric unit exists in a penta-coordinate environment. The molecular structures of $[Cu(dptsc)Br]_{2}$ and $[Cu(dptsc)(\mu-N_{3}]_{2}$ are resolved by single-crystal X-ray diffraction studies. Both the crystals are centrosymmetric dimers where each ligand unit coordinates through one of the pyridyl nitrogens, azomethine nitrogen and thiolate sulfur to Cu(II). A distorted square pyramidal geometry is observed around Cu(II)for both the complexes, where the N(2) nitrogen of the second ligand unit coordinates to the first Cu(II) center in compound 2 and N(6)nitrogen of the azido group bridges both the Cu(II) centers in compound3. Spectral characterization corroborate the structural studies.

Item Type:	Journal Article
Publication:	Polyhedron
Publisher:	Pergamon-Elsevier Science Ltd
Additional Information:	Copyright for this article belongs to Elsevier.
Keywords:	Di-2-pyridyl ketone;Thiosemicarbazone;Cu(II) thiosemicarbazone complex;Crystal structure
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	18 Jan 2007
Last Modified:	19 Sep 2010 04:19
URI:	http://eprints.iisc.ac.in/id/eprint/3373

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