Spectrophotometric study of the alkali metal-murexide complexes in some non-aqueous solutions. 1989

M Shamsipur, and S Madaeni, and S Kashanian
Department of Chemistry, Shiraz University, Shiraz, Iran.

The complexes of murexide with alkali-metal cations have been studied spectrophotometrically in methanol, dimethylformamide and dimethylsulphoxide media at 25 degrees . The stoichiometry of the complexes was found to be 1:1. The formation constants of the complexes were determined, and found to decrease in the order Na(+) > K(+) > Rb(+) approximately Li(+) for all solvents studied. The complex formation constants varied inversely with the Gutmann donicity of the solvents.

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