Effect of the Composition of Mixed Aqueous Organic Solvents on the Stability of Copper(II) Complexes with Anions of Succinic and Maleic Acids

The effect aqueous ethanol solvents have on the stability of coordination compounds between Cu(II) ions and anions of succinic (Y 2– ) and maleic (L 2– ) acids is studied via UV–Vis spectrophotometry. Logarithms of stability constants for succinate and maleate complexes are compared to ones obtained...

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Veröffentlicht in:Russian Journal of Physical Chemistry A 2021-02, Vol.95 (2), p.292-297
Hauptverfasser: Tukumova, N. V., Belova, N. V., Usacheva, T. R., Thuan, Tran Thi Dieu
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Sprache:eng
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Zusammenfassung:The effect aqueous ethanol solvents have on the stability of coordination compounds between Cu(II) ions and anions of succinic (Y 2– ) and maleic (L 2– ) acids is studied via UV–Vis spectrophotometry. Logarithms of stability constants for succinate and maleate complexes are compared to ones obtained via potentiometric titration. Quantum chemistry calculations are performed for the structures of maleic and succinic acids and complexes of them with Cu(II) ions to explain the difference between the stabilities of succinate and maleate complexes.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024421020278