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|Title:||Synthesis, structure and properties of [Cu(L)(NCO)]X (L = tetradentate schiff bases; X = ClO4, PF6)|
|Authors:||Rahaman, Sk. Hafijur|
Ghosh, Barindra Kumar
|IPC Code:||Int. Cl.7 C07F 1/08; C07F 9/14|
|Abstract:||Four copper(II) complexes of the type [Cu(L)(NCO)]X (1-4) [L=N,N' -(bis(pyridin-2-yl)formylidene)butane-1 ,4-diamine (bpfd) or N,N'-(bis(pyridin-2-yl)benzylidene)butane-1 ,4-diamine (bpbd); X = ClO4, PF6] have been synthesised and characterised on the basis of microanalytical, spectroscopic, magnetic, electrochemical and other physicochemical properties. X-ray diffraction study of complex 1 (L= bpfd, X = ClO4 ) reveals copper(II) ion in a distorted trigonal bipyramidal environment through coordination of the metal centre by two pyridine N atoms and two imine N atoms of the schiff base with the fifth position occupied with N atom of terminal NCO'. The tetradentate chelator is folded in the butylenic part. I R spectra of the complexes show asymmetric and symmetric stretching vNCO vibrations at ~ 2250 and ~1320 cm-1 respectively indicating N-bonding of NCO'. Electrochemi cal electron transfer study reveals CUII-CUI reduction in methanolic solutions.|
|Appears in Collections:||IJC-A Vol.43A(09) [September 2004]|
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