الفهرس 
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Abstract
The thesis comprises three main chapters:
, Chapter (I).
This chapter includes.literature survey on the coordination chemistry
of l,2,4-triazine derivatives in addition to their analytical uses and
biological activity.
Chapter (11).
This chapter describes the procedures used for the preparation of the
organic compounds; APyDPT (LI), FDPT (L2), TDPT (L3) and their
metal complexes. The different instruments used to characterize the
isolated compounds such as: molar conductivity, room temperature
magnetic susceptibility, mass, IHNMR, UV / vis., IR and ESR spectra
are reported. The measurements of the biological activity of some of
these compounds are reported.
Chapter (Ill).
This chapter comprises the results obtained and their discussion. It
consists of five parts.
The first part includes the mass, IHNMR spectral data• and the
elemental analysis of the organic compounds. The results obtained
showed characteristic data consistent with the assumed stoichiometry and
molecular structures.
The second part deals with the spectral and magnetic studies of
cobalt(II), nickel(II) and copper(II) complexes of APyDPT (Ll). The IR
data suggested that APyDPT (LI) acted as a neutral tridentate chelating
agent 111 [LICoCh], [LI2CO]Ac2.4H20, [L\Co](CI04)2.2H20,