Complex Formation of Silver(I) with 1,2,3-Benzotriazole: Protonization Constants of 1,2,3-Benzotriazole

被引：0

作者：

Samadov, A. S. ^{[1
]}

Stepnova, A. F. ^{[2
,3
]}

Faizullozoda, E. F. ^{[1
]}

Kuzmenko, A. N. ^{[4
]}

Plakhotnaya, O. N. ^{[4
]}

Kuzin, A. V. ^{[2
]}

Suyarov, K. J. ^{[1
]}

Khuseinov, K. Ya. ^{[1
]}

机构：

[1] Tajik Natl Univ, Dushanbe 734025, Tajikistan

[2] Moscow Pedag State Univ, Moscow 119435, Russia

[3] RUDN Univ, Moscow 117198, Russia

[4] Sechenov First Moscow State Med Univ, Moscow 119991, Russia

来源：

MOSCOW UNIVERSITY CHEMISTRY BULLETIN | 2023年 / 78卷 / 03期

关键词：

complex formation; 1,2,3-benzotriazole; stability constants; protonization constants; pH-metry; COBALT(II); IONS;

D O I：

10.3103/S0027131423030100

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The acid-base properties of 1,2,3-benzotriazole (Bta) at 25 degrees C and I = 0.1 mol/L KCl are studied in an aqueous solution by the pH-metric method. It is found that in the strongly acidic region of the solution, one of the two nitrogen atoms of the pyridine type of the Bta triazole rings undergoes protonation, and at high pH values, hydrogen abstraction occurs from the NH fragment of the molecule. The obtained values of the protonization constants of 1,2,3-benzotriazole log K-1 and log K-2 are 8.27 and 0.65, respectively. Using the potential of a silver electrode, the equilibria of silver(I) complex formation with 1,2,3-benzotriazole are studied. The data obtained indicate that Ag+ replaces the hydrogen ions of the ligand molecule and forms AgBta(2)(-) and complexes with the stability constants log beta(1) = 8.50 (AgBta) and log beta(2) = 12.65 (AgBta(2)(-)).

引用

页码：136 / 140

页数：5

共 50 条

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A. S. Samadov
A. F. Stepnova
E. F. Faizullozoda
A. N. Kuzmenko
O. N. Plakhotnaya
A. V. Kuzin
K. J. Suyarov
K. Ya. Khuseinov
[J]. Moscow University Chemistry Bulletin, 2023, 78 : 136 - 140
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