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Coupling reaction of m-and p- amino acetop henone and p-amino benzoic acid with (LHistidine)
gave the new bidentate azo ligands (L1, L2 and L3). The prepared ligands were
identified by FT-IR, UV-Vis, 1HNMR and GC- mass sp ectroscopic technique. Treatment of
the prepared ligands with the following metal ions (CoII, NiII, CuII, ZnII, CdII and HgII) in
aqueous ethanol with a 1:2 M:L ratio and at optimum pH, yielded a series of neutral
complexes of the general formula [M (L)2 Cl2]. The prepared complexes were characterized by
using flame atomic absorption, FT-IR, UV-Vis and 1HNMR spectroscopic methods as well as
magnetic susceptibility and conductivity measurements. Chloride ion content was also
evaluated by (Mohr method). The nature of the com
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