Monovalent copper complexes of N-aryl-pyridine-2-aldimine. Synthesis, characterization and structure

Goswami, Sreebrata ; Kharmawphlang, Wancydora ; Deb, Alok K. ; Peng, Shie-Ming (1996) Monovalent copper complexes of N-aryl-pyridine-2-aldimine. Synthesis, characterization and structure Polyhedron, 15 (20). pp. 3635-3641. ISSN 0277-5387

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/027753...

Related URL: http://dx.doi.org/10.1016/0277-5387(96)00065-4

Abstract

A direct synthetic route, based on silver(I) assisted metal exchange reaction, to cationic bis-ligand complexes of copper(I) involving N-aryl-pyridine-2-aldimines (L, 1) has been studied. These complexes are obtained as their perchlorates, [Cu(L)2]ClO4 (2). They have been characterized with the help of spectroscopy and X-ray crystallography. The X-ray structure of [Cu(L2)2]ClO4, where L2 is N-p-tolyl-pyridine-2-aldimine is reported. There are two crystallographically independent molecules in the asymmetric unit. The ligand L2 coordinates in a bidentate manner providing a highly distorted tetrahedral geometry about copper. The complexes show highly resolved symmetrical 1H NMR spectra. Intense MLCT absorptions are observed in the visible range. In methanol the CuL22+/CuL2+ couple has E½ ca, 0.35 V vs SCE at 298 K. The moderately high positive potential is brought about by the distortion in the geometry of CuL22+.

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ID Code:12836
Deposited On:11 Nov 2010 08:47
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