Protolytic and complexing properties of N-(2-hydroxyethyl)-iminodipropionic acid in aqueous solution
- Авторлар: Zharkov G.P.1,2, Filimonova O.V.1, Petrova Y.S.1, Pestov A.V.1,3, Neudachina L.K.1
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Мекемелер:
- Ural Federal University, the first President of Russia B.N. Yeltsin
- Ural Research Institute of Metrolgy, branch of the Federal State Unitary Enterprise “VNIIM named after. DI. Mendeleev”
- Institute of Organic Synthesis, Russian Academy of Sciences, AND I. Postovsky Ural Branch of the Russian Academy of Sciences
- Шығарылым: Том 70, № 4 (2025)
- Беттер: 575-582
- Бөлім: ФИЗИКОХИМИЯ РАСТВОРОВ
- URL: https://vestnik.nvsu.ru/0044-457X/article/view/687058
- DOI: https://doi.org/10.31857/S0044457X25040118
- EDN: https://elibrary.ru/HPHEEL
- ID: 687058
Дәйексөз келтіру
Аннотация
By the method of alkalimetric titration of aqueous solutions with pH-potentiometric indication at I = 0.1 mol/dm3 (KCl/KNO3) and t = 25 ± 1°C the acid dissociation constants of functional groups in the composition of a new reagent N-(2-hydroxyethyl)iminodipropionic acid pKa0 = 2.87 ± 0.02, pKa1 = 4.00 ± 0.02 and pKa2 = 9.25 ± 0.01. The complexation of the reagent with transition metal ions was studied. It is shown that N-functionalization of iminodipropionic acid by introduction of 2-hydroxyethyl substituent leads to a significant decrease in stability of complexes with copper(II) and nickel(II) ions, with cobalt(II), zinc(II) and cadmium(II) ions the stability of complexes does not significantly increase. Relatively high stability is characterized by complexes with silver(I) ions. Based on the obtained data, assumptions about the structure of the studied complexes were made.
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Авторлар туралы
G. Zharkov
Ural Federal University, the first President of Russia B.N. Yeltsin; Ural Research Institute of Metrolgy, branch of the Federal State Unitary Enterprise “VNIIM named after. DI. Mendeleev”
Хат алмасуға жауапты Автор.
Email: gennady.zharkov@mail.ru
Ресей, st. Mira, 19, Yekaterinburg, 620002; st. Krasnoarmeyskaya, 4, Ekaterinburg, 620075
O. Filimonova
Ural Federal University, the first President of Russia B.N. Yeltsin
Email: gennady.zharkov@mail.ru
Ресей, st. Mira, 19, Yekaterinburg, 620002
Yu. Petrova
Ural Federal University, the first President of Russia B.N. Yeltsin
Email: gennady.zharkov@mail.ru
Ресей, st. Mira, 19, Yekaterinburg, 620002
A. Pestov
Ural Federal University, the first President of Russia B.N. Yeltsin; Institute of Organic Synthesis, Russian Academy of Sciences, AND I. Postovsky Ural Branch of the Russian Academy of Sciences
Email: gennady.zharkov@mail.ru
Ресей, st. Mira, 19, Yekaterinburg, 620002; st. Akademicheskaya, 20, Yekaterinburg, 620990
L. Neudachina
Ural Federal University, the first President of Russia B.N. Yeltsin
Email: gennady.zharkov@mail.ru
Ресей, st. Mira, 19, Yekaterinburg, 620002
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