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Monooxovanadium(V) mixed ligand complexes of Schiff bases and catecholates: Synthesis, spectral and electrochemical characterization

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Title Monooxovanadium(V) mixed ligand complexes of Schiff bases and catecholates: Synthesis, spectral and electrochemical characterization
 
Creator ASGEDOM, G
SREEDHARA, A
RAO, CP
KOLEHMAINEN, E
 
Subject spectroscopic characterization
vanadium
reactivity
salicylaldehyde
derivatives
chemistry
 
Description Mixed ligand, mono oxovanadium(V) complexes of Schiff bases with catechol, p-tertbutylcatechol or pyrogallol have been synthesized and characterized by various spectral techniques, such as FTIR, UV-vis, V-51 NMR and electrochemistry. All of these complexes exhibited a six coordinated VO3+ center. The stability and the conversion of these complexes to pentacoordinated VO2+ species with the loss of a bidentate catecholate ligand in DMSO were demonstrated using absorption, V-51 NMR and electrochemical studies. V-51 NMR studies further suggested the formation of two possible isomers in the case of p-tertbutylcatechol and pyrogallol complexes of VO3+ Electrochemistry of these complexes showed one reversible V(V)/V(IV) couple and another irreversible V(IV)/V(III) response. The mixed ligand, VO3+ complexes are more resistant to reduction as compared to the corresponding tris catecholate complexes. Copyright (C) 1996
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-25T15:06:45Z
2011-12-26T12:57:07Z
2011-12-27T05:46:55Z
2011-08-25T15:06:45Z
2011-12-26T12:57:07Z
2011-12-27T05:46:55Z
1996
 
Type Article
 
Identifier POLYHEDRON, 15(21), 3731-3739
0277-5387
http://dx.doi.org/10.1016/0277-5387(96)00123-4
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11057
http://hdl.handle.net/10054/11057
 
Language en