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Homo- and heteronuclear complexes of a new, vicinal dioxime ligand

M. Serin, G. Karayel, and R. Gup

Department of Chemistry, Mugla University, 48000 Kotekli-Mugla, Turkey

 

E-mail: rgup@mu.edu.tr

Received: 21 January 2007  Revised: 13 March 2007  Accepted: 22 March 2007

Abstract: A new symmetrical vicinal dioxime, N,N′-bis-{4-[[(2-hydroxyphenyl)methylene]hydrazinecarbonyl]phenyl}diaminoglyoxime (LH4), was prepared by reacting anti-dichloroglyoxime with salicylaldehyde 4-aminobenzoylhydrazone. The reaction of ligand with Ni2+ salts gave mono-and homopentanuclear complexes, [Ni(LH3)2] and [Ni5(LH)2X2]. Furthermore, heteropentanuclear complexes of dioxime ligand, [Cu4Ni(LH)2X4], were prepared by the reaction of [Ni(LH3)2)] with Cu2+ salt and a monodentate ligand (X = SCN, CN, or N 3 ). The structures of both the new symmetrical vicinal dioxime and its complexes were identified by elemental analyses, IR, 1H NMR, UV-VIS spectra, and magnetic susceptibility. The elemental analyses and spectral data indicate that the hydrazone side of ligand acts as a O,N,O′ tridentate and the fourth position is occupied with monodentate anion such as SCN, CN, N 3 .

Keywords: vic-dioxime - hydrazone - homonuclear complexes - heteronuclear complexes - nickel - copper

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-007-0035-2

 

Chemical Papers 61 (4) 286–291 (2007)

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