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Mixed Complexes of Copper(II) Nitrilotriacetate with Triglycine in Solution

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Abstract

Potentiometric, calorimetric, and spectrophotometric studies on mixed-ligand complexes of copper(II) nitrilotriacetate (Nta) and glycinate (Gly) with simple tripeptide GlyGlyGly (GGG) have been carried out in aqueous solution at 298.15 K and the ionic strength of I = 0.5 (KNO3). The thermodynamic parameters of formation of various mixed complexes have been determined. The probable coordination modes of the complexone and peptide molecule in the mixed-ligand complexes were discussed.

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Acknowledgements

This research was funded by the Ministry of Science and Higher Education of Russia in accordance with a state assignment, project FZZW-2020-0009. The study was carried out using the resources of the Center for Shared Use of Scientific Equipment of the ISUCT (with the support of the Ministry of Science and Higher Education of Russia, Grant No. 075-15-2021-671).

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  1. Department of Fundamental and Applied Chemistry, Ivanovo State University, Ermak 39, Ivanovo, Russia, 153025

    Dmitrii Pyreu

  2. Ivanovo State University of Chemical Sciences and Technology, Ivanovo, Russia

    Sergei Gridchin

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  2. Sergei Gridchin
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Pyreu, D., Gridchin, S. Mixed Complexes of Copper(II) Nitrilotriacetate with Triglycine in Solution. J Solution Chem 51, 1443–1454 (2022). https://doi.org/10.1007/s10953-022-01204-9

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