The iminoquinolinone-type ligands (IQLO) were synthesized by condensing 4-alkylaminopenylamines or hydroxy aromatic amines with 8-hydroquinoline (8HQ) in the presence of an oxidizing agent. The yield of IQLO was different from the reactants and experimental results, the reaction of 4-alkylaminophenylarnines with 8HQ was proposed to proceed by oxidation of aromatic hydroxyamines with oxygen and gave IQLO in 83-98% yields. The metal complexes containing IQLO were synthesized , in addition, these complexes exhibited absorption bands at 581757 nm. Also, EA, UV and IR were used to characterize these complexes. Coordination occurs via the oxygen atom of the quinoneimine moiety and the nitrogen atom of the pyridine moiety, as suggested by the above results.