Conductance study of the thermodynamics of Tl+ ion complexes with different 18-membered crown ethers in binary dimethylformamide-acetonitrile mixtures

Authors
Shamsipur, M Khayatian, G
Citation
M. Shamsipur et G. Khayatian, Conductance study of the thermodynamics of Tl+ ion complexes with different 18-membered crown ethers in binary dimethylformamide-acetonitrile mixtures, J INCL P MA, 39(1-2), 2001, pp. 109-113
Citations number
34
Categorie Soggetti
Chemistry
Journal title
JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY
ISSN journal
13883127 → ACNP
Volume
39
Issue
1-2
Year of publication
2001
Pages
109 - 113
Database
ISI
SICI code
1388-3127(200102)39:1-2<109:CSOTTO>2.0.ZU;2-S
Abstract
A conductance study of the interaction between Tl+ ion and 18-crown-6 (18C6 ), dicyclohexano-18-crown-6 (DC18C6), benzo-18-crown-6 (B18C6), diaza-18-cr own-6 (DA18C6), dibenzyldiaza-18-crown-6 (DBzDA18C6) and hexaaza-18-crown-6 (HA18C6) in dimethylformamide-acetonitrile mixtures was carried out at var ious temperatures. The formation constants of the resulting 1:1 complexes w ere determined from the molar conductance-mole ratio data and found to vary in the order HA18C6 > DA18C6 > DBzDA18C6 > 18C6 > DC18C6 > B18C6. The enth alpy and entropy of the complexation reactions were determined from the tem perature dependence of the formation constants.