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Synthesis and characterization of complexes of Fe(III), Co(III), Ni(II), Cu(II), Zn(II) and UO(2)(2+) with p-tert-butylcalix[4]arene bearing two imine pendants linked through salicylyl moiety at the lower rim

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Title Synthesis and characterization of complexes of Fe(III), Co(III), Ni(II), Cu(II), Zn(II) and UO(2)(2+) with p-tert-butylcalix[4]arene bearing two imine pendants linked through salicylyl moiety at the lower rim
 
Creator DEY, M
CHINTA, JP
LONG, GJ
RAO, CP
 
Subject spin-state interconversion
electron-paramagnetic resonance
schiff-base
selective recognition
molecular recognition
crossover complexes
equilibrium system
crystal-structure
ferric complexes
solid-state
coordination chemistry
calixarenes
calix[4]arene-imine conjugates
iron
cobalt
nickel
copper
zinc
uranium
fab mass spectrometry
magnetic susceptibility
electron paramagnetic resonance
mossbauer spectroscopy
 
Description Metal ion complexes of the double-armed p-tert-butylcalix[4]arene derivative possessing imine functionality linked through salicylyl moiety at the lower rim has been synthesized for the first time and characterized by analytical, spectral and magnetic methods. The 1, 3- di-calix[4]arene-imine conjugate exhibits variable coordination behavior, from tetradentate to hexadentate, depending upon the metal ion to which it is bound, by always acting as di-anionic. While it uses both the ether oxygens of the pendants to coordinate in the case of Fe(III), Co(III) and Ni(II) complexes, it uses only the pendant salicylidene moieties in the case of Cu(II) and Zn(II) complexes. The Zn(II) complex catalysis ester hydrolysis through the formation of Zn(II)-hydroxo species.
 
Publisher NATL INST SCIENCE COMMUNICATION
 
Date 2011-08-19T07:18:48Z
2011-12-26T12:56:07Z
2011-12-27T05:44:19Z
2011-08-19T07:18:48Z
2011-12-26T12:56:07Z
2011-12-27T05:44:19Z
2009
 
Type Article
 
Identifier INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY, 48(11), 1484-1491
0376-4710
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10269
http://hdl.handle.net/10054/10269
 
Language en