Abstract

Sheo S. Prasad, D. K. Verma, R. L. Verma and D. N. Prasad

The mixed ligand complexes of the general formula ML HL have been prepared where M=Mg, Ca, Sr, Ba; L = salicylic acid, O-nitrophenol, O-aminobenzoic acid, 1-nitroso-2-naphthol or 8-hydroxyquinoline and HL'=2-hydroxy -1,4-naphthaquinone by the reaction of alkaline earth metal derivatives of the first ligand with the second ligand 2-hydroxy -1,4-naphthaquinone. These complexes were characterised by physical methods. The IR spectra suggest that the coordination of the ligand with alkaline earth metals has taken place through hydroxy oxygen atom of the phenolic group as well as through the oxygen atom of quinone group. The IR spectra of the complexes also indicate the presence of hydrogen bonding in them.

Mixed ligand complexes alkaline earth metals; oxygen and nitrogen ligands; hydroxyquinone

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