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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/10269

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
Authors: DEY, M
CHINTA, JP
LONG, GJ
RAO, CP
Keywords: spin-state interconversion
electron-paramagnetic resonance
schiff-base
selective recognition
molecular recognition
crossover complexes
equilibrium system
crystal-structure
ferric complexes
solid-state
Issue Date: 2009
Publisher: NATL INST SCIENCE COMMUNICATION
Citation: INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY, 48(11), 1484-1491
Abstract: 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.
URI: http://dspace.library.iitb.ac.in/xmlui/handle/10054/10269
http://hdl.handle.net/10054/10269
ISSN: 0376-4710
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