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Synthesis, structure and magnetic properties of two end-on double azido bridged nickel(II) dinuclear entities incorporating N,N,N-coordinating tridentate reduced schiff base ligands

Sarkar, Sumana and Mondal, Amrita and El Fallah, Mohamed Salah and Ribas, Joan and Chopra, Deepak and Stoeckli-Evans, Helen and Rajak, Kajal Krishna (2006) Synthesis, structure and magnetic properties of two end-on double azido bridged nickel(II) dinuclear entities incorporating N,N,N-coordinating tridentate reduced schiff base ligands. In: Polyhedron, 25 (1). pp. 25-30.

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Abstract

Complexes of the general formula $[Ni_{2}L_{2}(\mu_{1,1}-N_{3})_{2}(N_{3})_{2}]$ have been synthesised in good yields by reacting $Ni(NO_{3})_{2}{\cdot}6H_{2}O$ with L in the presence of excess of sodium azide in methanol at room temperature. Here L is N,N-bis(2-pyridylmethyl)amine$(L^{1})$ and N-(2-pyridylmethyl)-N',N'-diethylethylenediamine$(L^{2})$. The X-ray structures of both compounds reveal that the N,N,N coordinating reduced Schiff bases are ligated facially. The $Ni-N_{azido}-Ni$ angle is $\sim{100^o}$ and the $Ni{\cdot\cdot\cdot}Ni$ separation is ~3.2 A. The variable temperature magnetic susceptibility measurements of the two complexes show ferromagnetic behavior.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Elsevier.
Keywords: Reduced Schiff base; Nickel; Azide; Crystal structure; Ferromagnetic
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 28 Feb 2006
Last Modified: 19 Sep 2010 04:24
URI: http://eprints.iisc.ernet.in/id/eprint/5715

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