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Bibenzimidazole containing mixed ligand cobalt(III) complex as a selective receptor for iodide

DRS at CSIR-National Institute of Oceanography

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Title Bibenzimidazole containing mixed ligand cobalt(III) complex as a selective receptor for iodide
 
Creator Indumathy, R.
Parameswarana, P.S.
Aiswarya, C.V.
Nair, B.U.
 
Subject ligand
receptor
 
Description Two new mixed ligand cobalt(III) complexes containing bibenzimidazole (bbenzimH2) ligand with composition [Co(phen)2bbenzimH2](ClO4)3 (1) and [Co(bpy)2bbenzimH2](ClO4)3 (2) have been synthesized and characterized using UV–Vis, Infrared, ESI-MS and cyclic voltammetric techniques. Both complexes 1 and 2 exhibited quasi-reversible electrochemical wave. The anion binding studies with these metallo-receptor complexes were carried out using UV–Vis and fluorescence spectroscopic titrations and complex 2 was found to be selective towards iodide anion. Though complex 2 possesses potential hydrogen bonding sites, namely –NH, it was found that the basic anions like F-, OH- and OAc- do not bring about any dramatic visual colorimetric changes. However, metallo-receptor 2 brings about vivid color change with iodide anion visually and this could be due to charge transfer transition via ion pair formation with iodide ion
 
Date 2015-01-08T08:47:39Z
2015-01-08T08:47:39Z
2014
 
Type Journal Article
 
Identifier Polyhedron, vol.75; 2014; 22-29
no
http://drs.nio.org/drs/handle/2264/4669
 
Language en
 
Relation Polyhedron_75_22.jpg
 
Rights An edited version of this paper was published by Elsevier. Copyright [2014] Elsevier
 
Publisher Elsevier