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Abstract:
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The work embodied in this thesis was carried out by the author in the
Department of Applied Chemistry, CUSAT, Kochi, during the period 2009-2012.
The thesis is an introduction to our attempts to evaluate the coordination behavior
of some compounds of our interest. The biological activities of semicarbazones
and their metal complexes have been an active area of research during the past
years because of their significant role in naturally occurring biological systems.
Tridentate NNO and ONO semicarbazone systems formed from heterocyclic and
aromatic carbonyl compounds and their transition metal complexes are wellauthenticated
compounds in this field and their synthesis, crystal structures and
spectral studies are well desirable. Hence, we decided to develop a research
program aimed at the syntheses, crystal structures and spectral studies of new N4-
phenylsemicarbazones derived from 2-formylpyridine and 3-ethoxysalicylaldehyde
and their transition metal complexes and new transition metal complexes of 2-
benzoylpyridine-N4-phenylsemicarbazone. In addition to various physicochemical
methods of analysis, single crystal X-ray diffraction studies were also
used for the characterization of the complexes. |