THE STUDY OF THE COMPLEX FORMATION OF THE COPPER(II) ION WITH SALICYLIC ACID BY MEANS OF THE EPR AND UV-VIS SPECTROSCOPY METHODS WITHIN WIDE RANGE OF AQUEOUS MEDIUM’S pH VALUES

Authors

  • S.K. Grigoryan Chair of Inorganic and Analytical Chemistry, YSU, Armenia
  • G.S. Grigoryan Chair of Physical and Colloids Chemistry, YSU, Armenia
  • A.I. Martiryan Chair of Inorganic and Analytical Chemistry, YSU, Armenia
  • L.G. Tadevosyan Chair of Inorganic and Analytical Chemistry, YSU, Armenia

DOI:

https://doi.org/10.46991/PYSU:A/2019.53.3.166

Keywords:

copper(II) ion, salicylic acid, complex formation

Abstract

The complex formation of the copper(II) ion with salicylic acid by means of the EPR and UV-Vis spectroscopy methods has been studied under standard conditions within pH 4.0–10.2 values. It has been shown that in the pH 4.0–5.5 acidic media the I type complex is formed, in which the Cu2+ ion is connected with two salicylic acid ligands H2Sal and two water molecules, when in the pH 7.5–10 alkaline media the type II complex is formed, in which the Cu2+ ion is connected only with two salicylic acid anions Sal2–. By means of the EPR and UV-Vis spectroscopy methods it has been also estimated that the ligand field of the type I complexes is strengthener than that of the type I complexes.

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Published

2019-12-18

How to Cite

Grigoryan, S.K., G.S. Grigoryan, A.I. Martiryan, and L.G. Tadevosyan. 2019. “THE STUDY OF THE COMPLEX FORMATION OF THE COPPER(II) ION WITH SALICYLIC ACID BY MEANS OF THE EPR AND UV-VIS SPECTROSCOPY METHODS WITHIN WIDE RANGE OF AQUEOUS MEDIUM’S PH VALUES”. Proceedings of the YSU B: Chemical and Biological Sciences 53 (3 (250):166-70. https://doi.org/10.46991/PYSU:A/2019.53.3.166.

Issue

Vol. 53 No. 3 (250) (2019)

Section

Chemistry

License

Copyright (c) 2019 Proceedings of the YSU

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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