Abstract
The formation of silver(I) complexes with 2-mercaptobenzimidazole (MB) in solutions containing different amounts of ethyl alcohol is studied via potentiometric titration. The acid–base properties of 2‑mercaptobenzimidazole are studied under the same conditions. It is shown that the 2-mercaptobenzimidazole molecule is protonated in the pH range 0.5–2.5. At pH 7–8, an MB molecule is predominantly (99.72%) in the form of a neutral molecule; above pH 11, it exists in the form of a negatively charged ion L−. It is found that two complex forms result from the interaction between Ag(I) and MB. The cumulative stability constants of mono- and bis(ligand) complexes of silver are calculated at different concentrations of ethanol in solution. It is found that increasing the percentage of ethanol in a solution enhances the stability of the complexes of silver(I) and MB.
Similar content being viewed by others
REFERENCES
G. A. Novikova, A. K. Molodkin, and S. S. Kukalenko, Zh. Neorg. Khim. 33, 3111 (1988).
S. Ch. Gagieva, A. T. Tsaloev, N. A. Gutnova, A. A. Arutyunyants, and A. B. Khubulov, Russ. J. Inorg. Chem. 48, 1182 (2003).
A. I. Busev, L. N. Lomakina, and T. I. Ignat’eva, Zh. Neorg. Khim. 21, 500 (1976).
A. A. Amindzhanov, S. M. Safarmamadov, M. M. Mashali, and Yu. F. Bakhodurov, Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol. 54 (3), 23 (2011).
A. A. Amindzhanov, S. M. Safarmamadov, and K. S. Mabatkadamova, Dokl. AN Resp. Tadzhik. 53 (1), 40 (2010).
S. M. Safarmamadov, Extended Abstract of Doctoral (Chem.) Dissertation (Voronezh, 2008).
G. V. Moshorin, G. I. Repkin, and V. A. Sharnin, Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol. 50 (10), 29 (2007).
A. S. Sodatdinova, Extended Abstract of Cand. Sci. (Chem.) Dissertation (Dushanbe, 2016).
Ts. K. Migal’ and K. I. Ploae, Zh. Neorg. Khim. 10, 2519 (1965).
V. V. Udovenko and G. B. Pomerants, Zh. Neorg. Khim. 18, 1773 (1973).
G. V. Budu and A. P. Tkhoryak, Zh. Neorg. Khim. 25, 1006 (1980).
G. V. Budu, L. V. Nazarova, and A. P. Tkhoryak, Zh. Neorg. Khim. 20, 2094 (1975).
Z. I. Karimova, Yu. F. Bakhodurov, and K. S. Mabatkadamzoda, in Proceedings of the International Conference on Complex Compounds and Aspects of Their Application (Dushanbe, 2018), p. 95.
Z. I. Karimova, Yu. F. Bakhodurov, and K. S. Mabatkadamzoda, Dokl. AN Resp. Tadzhik., Nos. 9–10, 759 (2018).
A. Albert and E. P. Sergeant, Ionization Constants of Acids and Bases (Wiley, London, 1962).
http://chemanalytica.com/book/novyy_spravochnik_khimika_i_tekhnologa/12_obshchie_svedeniya/6177.
L. P. Nekrasova, Mezhd. Zh. Prikl. Fundam. Issledov., No. 8–2, 231 (2017).
E. I. Kapustin, The Solution of Certain Classes of Mathematical Problems in the Program Excel. http://exponenta.ru/educat/systemat/Kapustin/014.asp.
A. N. Meshkov and G. A. Gamov, Talanta 198, 200 (2019).
Complex Formation in Nonaqueous Solutions, Ed. by G. A. Krestov (Nauka, Moscow, 1989) [in Russian].
G. V. Budu and L. V. Nazarova, Zh. Neorg. Khim. 18, 1531 (1973).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated by E. Boltukhina
Rights and permissions
About this article
Cite this article
Safarmamadov, S.M., Karimova, Z.I., Bakhodurov, Y.F. et al. Formation of Complexes of Silver(I) and 2-Mercaptobenzimidazole in Water–Ethanol Solutions. Russ. J. Phys. Chem. 94, 1119–1124 (2020). https://doi.org/10.1134/S0036024420060199
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0036024420060199