| Abstract |
Molar conductivity values ( Lambda(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 degrees C) and three additional solvents ( nitromethane, 2-methyl-1-propanol and 2-ethoxyethanol) at 60: 00 degrees C. Molar conductivities at in finite dilution ( Lambda(0)(m)), association constants ( K-A) and respective errors are also determined. The temperature dependence of Lambda(0)(m) and K-A shows positive, negative and negligible trends. Lambda(0)(m) 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. |
