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Na(I)/Cu(I-II) heterometallic cages interconnected by unusual linear 2-coordinate OCN-Cu(I)-NCO links: synthesis, structural, magnetostructural correlation and computational studies

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Title Na(I)/Cu(I-II) heterometallic cages interconnected by unusual linear 2-coordinate OCN-Cu(I)-NCO links: synthesis, structural, magnetostructural correlation and computational studies
 
Creator RAY, A
ROSAIR, GM
RAJEEV, R
SUNOJ, RB
RENTSCHLER, E
MITRA, S
 
Subject schiff-base complexes
dinuclear copper(ii) complexes
carbon-dioxide fixation
magnetic-properties
crystal-structures
molecular-structure
x-ray
nickel(ii) complexes
binuclear complexes
exogenous bridges
 
Description A new Na(I)/Cu(I-II) heterometallic coordination complex [Cu(2)L(2)Na(NCO)(2)Cu](n) (1) with an unusual architecture has been synthesised. In 1 cyclic Na-O-Cu-O-Cu cages constructed by the tetradentate N(2)O(2) donor Schiff base ligand (H(2)L = N, N'-bis(2-hydroxyacetophenone) propylenediimine) are interconnected to each other by a rare singly end-to-end bridged OCN-Cu(I)-NCO link generating 1D chain. The complex has been characterised by elemental, spectral and structural analysis. The cyclic voltammogram of 1 has been compared with the analogous complexes. Cryomagnetic susceptibility studies indicate the copper(II) centers in the cyclic Na-O-Cu-O-Cu cages are antiferromagnetically coupled with J = -13.8 cm(-1). Complex 1 is a new addition to a class of rare singly end-to-end cyanato bridged copper(I) species and interestingly the copper ions involved in OCN-Cu(I)-NCO links possess a linear 2-coordinate geometry. Density functional theory calculations have been carried out to gain additional insights into the metal and ligand orbitals participating in this unusual structure.
 
Publisher ROYAL SOC CHEMISTRY
 
Date 2011-08-28T13:54:48Z
2011-12-26T12:58:03Z
2011-12-27T05:47:10Z
2011-08-28T13:54:48Z
2011-12-26T12:58:03Z
2011-12-27T05:47:10Z
2009
 
Type Article
 
Identifier DALTON TRANSACTIONS, (43), 9510-9519
1477-9226
http://dx.doi.org/10.1039/b911938h
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11755
http://hdl.handle.net/10054/11755
 
Language en