The Complexation of Silver (I) ion with 18-Crown-6 Ether in Water and Some Polar Aprotic Solvents
Author:
Feofanov Denis A.1,
Penin Maxim Yu.1,
Epov Oleg A.1,
Fabinskii Pavel V.1
Affiliation:
1. Reshetnev Siberian State University of Science and Technology
Abstract
The process of complexation of silver (I) ions with 18-crown-6 ether in some polar water-aproton solvents at a constant temperature of 308К was studied by direct potentiometric titration. The stability constants of the resulting complex are determined depending on the molar fraction from 0.2 to 0.8 dimethylsulfoxide and dimethylformamide in the composition of the mixed solvent. It is shown that, despite the same nature of the co-solvents, they have the opposite effect on the stability constant of the complex due to the instability of DMF in an acidic medium and when heated. It is noted that the studied reaction is exothermic and the temperature increase reduces the stability of the studied complexes
Publisher
Siberian Federal University
Subject
General Chemical Engineering,General Chemistry