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/PYSUB.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

Issue

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

Section

Chemistry

License

Copyright (c) 2019 Proceedings of the YSU

Creative Commons License

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

How to Cite

“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”. 2019. Proceedings of the YSU B: Chemical and Biological Sciences 53 (3 (250): 166-70. https://doi.org/10.46991/PYSUB.2019.53.3.166.

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