Introduction: Novel Cu(II), Co(II) and Ni(II) complexes of 8-hydroxyquinolineazo analogues are synthesized from 5-((3-nitrophenyl)diazenyl) quinolin-8-ol (4a) and 5-((4-bromo-3-methylphenyl) diazenyl) quinolin-8-ol (4b). Methods: The structural environment and elemental composition of the synthesized metal complexes are confirmed by FT/IR,
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