الفهرس 
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Abstract
This thesis comprises four chapters, the first of which deals with general review on the synthesi and spectral properties of aromatic orthohydroxy azomethine compounds.
the
well
acid base
Special attention has been directed to demonstrate tautomeric behaviour properties of these class of compounds. The effect of
solvent on the equilibria between different
tautomeric
forms have intermolecular hydrogen bonding have demonstrated. This chapter also includes
been reviewed.
Both
intra- and
been also the aim of
investigation and statement of the problem.
The second chapter of this thesis is devoted for the results obtained from studies on the spectral behaviour of N-salicylidene aroyl hydrazines.
It comprises six parts and includes the following:
1. Absorption spectra of N-salicylidene aroyl hydrazines and related compounds.