Abstract
Complexation of cobalt(II) chloride with apple pectin modified with organic pharmacophores (nicotinic, salicylic, 5-aminosalicylic, or anthranilic acid) has been studied by spectral methods. Molar composition, stability constants of the complexes, and pH range of their existence have been determined; standard thermodynamic characteristics (ΔH°, ΔG°, ΔS°) of the complexes formation have been calculated. it has been shown that cobalt(II) ions form complexes of different stability with pharmacophore-containing pectins, which may be due to the unequal affinity of the metal ions to the donor groups of the monomer unit of the polysaccharide matrices.
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This paper was prepared in scope of the Fundamental Research in State Academies program for 2013–2018. State task no. AAAA-A17-117011910026-3.
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Russian Text © The Author(s), 2019, published in Zhurnal Obshchei Khimii, 2019, Vol. 89, No. 7, pp. 1079–1084.
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Sagitova, A.F., Mudarisova, R.K. & Kukovinets, O.S. Features of Cobalt(II) Complexes Formation with Pharmacophore-Modified Apple Pectin. Russ J Gen Chem 89, 1433–1437 (2019). https://doi.org/10.1134/S1070363219070132
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DOI: https://doi.org/10.1134/S1070363219070132