Tipo
Artigos em Revista
Tipo de Documento
Artigo Completo
Título
Solvent and temperature effects on ion association and mobility of 2,6-lutidinium chloride in non-aqueous solvents
Participantes na publicação
L. Moreira (Author)
R. E. Leitäo (Author)
F. Martins (Author)
Dep. Química e Bioquímica
CQB
Resumo
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
Data de Submissão/Pedido
2006-01-09
Data de Aceitação
2006-03-01
Data de Publicação
2006-06-20
Instituição
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
Suporte
Molecular Physics
Identificadores da Publicação
Editora
Taylor & Francis
Número de Páginas
9
Página Inicial
1905
Página Final
1913
Identificadores do Documento
DOI -
https://doi.org/10.1080/00268970600665104
URL -
http://dx.doi.org/10.1080/00268970600665104
Identificadores de Qualidade
SCIMAGO Q3 (2006) - 1.027 - Physical and Theoretical Chemistry