Monovalent copper complexes of N-aryl-pyridine-2-aldimine. synthesis, characterization and structure
Resource
Polyhedron 15 (20): 3635-3641
Journal
Polyhedron
Journal Volume
15
Journal Issue
20
Pages
3635-3641
Date Issued
1996
Date
1996
Author(s)
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-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 CuL2+2/CuL+2 couple has E1/2 ca, 0.35 V vs SCE at 298 K. The moderately high positive potential is brought about by the distortion in the geometry of CuL2+2. Copyright © 1996 Elsevier Science Ltd.
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Type
journal article
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