Pearly Sebastian, Chittilappilly; Mohammed Yusuff, K K(Cochin University of Science and Technology, March , 2007)
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Abstract:
In the present study an attempt has been made to synthesize some simple complexes of
multidentate ligands. Analogous zeolite encapsulated complexes were also synthesized and
characterized. Immobilization on to polymer supports through covalent attachment is
expected to solve the problem of decomposition of many complexes during catalytic reaction.
Hence the work is also extended to the synthesis and characterization of some polymer
supported complexes of Schiff base Iigands. All the three types of synthesized complexes,
simple, zeolite encapsulated and polystyrene anchored, were subjected to catalytic activity
study towards catechol-oxidation reaction. A selected group of complexes were also screened
for their catalytic activity towards phenol-oxidation reaction. Biological screening of the
synthesized ligands and neat complexes were done with a view to establish the effect of
complexation on biological systems.
Description:
Department of Applied Chemistry,
Cochin University of Science and Technology
Chandini,R Nayar; Prathapachandra Kurup, M R(Department of Applied Chemistry, 2002)
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Abstract:
Coordination chemistry of schiff bases is of considerable interest due to their various magnetic, catalytic and biological applications. Here it describes the spectral characterization of schiff bases and its Mn (II), Cu (II) and Ni (II) complexes. Then synthesis and spectral characterization of Zn (II), Cd (II) and Co (II) complexes of schiff base derived from 3-Formylsalicilic Acid and 1,3-diaminopropane. Then it discusses the synthesis and spectral studies of Copper (II) complexes of 2-Hydroxyacetophenone N-phenyl semicarbazone. Finally it discusses the synthesis and spectral characterization of Co (III) complexes of salicylaldehyde N-phenyl semicarbazone. The preparation and characterization of Cobalt (III) complexes of salicylaldehyde, N-phenylthiosemicarbazone containing hetrocyclic bases phenalthroline and bipyridine. Thiocyanate, azide and perchlorate ions act as coligands. Elemental analysis suggests +3 state for Cobalt. HNMR, IR and UV-visible spectra characterize the complexes.