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Spectrophotometric study of cobalt, nickel, copper, zinc, cadmium and lead complexes with murexide in dimethylsulphoxide solution

1992; Elsevier BV; Volume: 39; Issue: 9 Linguagem: Inglês

10.1016/0039-9140(92)80222-y

1873-3573

Mojtaba Shamsipur,

Electrochemical Analysis and Applications

The complexation reactions between murexide and Co2+, Ni2+, Cu2+, Zn2+, Cd2+ and Pb2+ ions have been studied spectrophotometrically in dimethylsulphoxide solution at 25°. The stoichiometry of the complexes was found to be 1:1. The stability constants of the complexes were determined, and found to follow the Irving-Williams rule for the cations of the first transition series. In dimethylsulphoxide solution, the complexes are much more stable than those in aqueous solution.