Document type
Journal articles
Document subtype
Full paper
Title
Solvent and temperature effects on ion association and mobility of 2,6-lutidinium chloride in non-aqueous solvents
Participants in the publication
L. Moreira (Author)
R. E. Leitäo (Author)
F. Martins (Author)
Dep. Química e Bioquímica
CQB
Summary
Molar conductivity values (Λ m) of 2,6-lutidinium chloride at ten different concentrations ranging from 0.001 to 0.01 mol dm−3, in several solvents and temperatures are reported for: seven solvents (dimethyl sulphoxide, acetonitrile, propylene carbonate, N,N-dimethylacetamide, ethanol, 1-propanol and 1-butanol) at five different temperatures (60.00, 65.00, 70.00, 75.00 and 80.00°C) and three additional solvents (nitromethane, 2-methyl-1-propanol and 2-ethoxyethanol) at 60.00°C. Molar conductivities at infinite dilution (lambda ºm), association constants (K A) and respective errors are also determined.\nThe temperature dependence of lambda ºm and K A shows positive, negative and negligible trends. Lambda ºm versus viscosity plots reveal a breakdown of Walden's rule. K A is markedly dependent on the solvent's features, revealing strong deviations from the predictions of classical dielectric theories. It is reasoned that specific ion–solvent–solvent interactions may play an important role.\n
Date of Submisson/Request
2006-01-09
Date of Acceptance
2006-03-01
Date of Publication
2006-06-20
Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
Where published
Molecular Physics
Publication Identifiers
Publisher
Taylor & Francis
Number of pages
9
Starting page
1905
Last page
1913
Document Identifiers
DOI -
https://doi.org/10.1080/00268970600665104
URL -
http://dx.doi.org/10.1080/00268970600665104
Rankings
SCIMAGO Q3 (2006) - 1.027 - Physical and Theoretical Chemistry