Russian Journal of General Chemistry

, Volume 89, Issue 7, pp 1433–1437 | Cite as

Features of Cobalt(II) Complexes Formation with Pharmacophore-Modified Apple Pectin

  • A. F. SagitovaEmail author
  • R. Kh. Mudarisova
  • O. S. Kukovinets


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.


polysaccharides apple pectin pharmacophore cobalt(II) ions complexation 


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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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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • A. F. Sagitova
    • 1
    Email author
  • R. Kh. Mudarisova
    • 2
  • O. S. Kukovinets
    • 1
  1. 1.Bashkir State UniversityUfaRussia
  2. 2.Ufa Institute of Chemistry, Ufa Federal Research CenterRussian Academy of SciencesUfaRussia

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