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• W2328443402 endingPage "3005" @default.
• W2328443402 startingPage "2999" @default.
• W2328443402 abstract "We investigated the rotational dynamics of two imidazolium-based ionic liquids, 1-butyl-3-methylimidazolium bromide ([C4mim]Br) and 1-butyl-2,3-dimethylimidazolium bromide ([C4C1mim]Br), to reveal the effects of methylation at position 2 of the imidazolium ring (C(2) methylation). The rotational correlation time (τlocal) for each carbon in the cations is derived from the spin−lattice relaxation time of 13C nuclear magnetic resonance. The τlocal results obtained here provide three principle insights into the rotational dynamics of ionic liquids. First, all τlocal values for [C4C1mim]Br are greater than those for [C4mim]Br owing to a viscosity increase due to C(2) methylation. Second, the rate of change in τlocal on C(2) methylation differs among the carbons in the cation, which indicates that each carbon has a different microviscosity. Third, the τlocal increase in the 13C at the root of the butyl group on C(2) methylation is very small compared to both intuitive prediction and the results from quantum chemical calculations. This indicates that the motion of the butyl group root in [C4C1mim]Br is not significantly inhibited by the methyl group at the position 2 of the imidazolium ring. The finding provides conclusive information on the origin of the increases in the melting point on C(2) methylation. Hunt previously found through calculation that decreases in entropy are caused by two factors, namely, reductions in the rotational mobility of the butyl group and in the number of stable anion interaction sites with C(2) methylation, resulting in an increase in melting point and viscosity. Our finding experimentally illustrates that the origin of the increases in melting point is not the inhibition of butyl group motion and that the reduction in stable anion interaction sites plays a major role in the increases. Additionally, it is suggested that the viscosity increase on C(2) methylation can be interpreted in the same manner." @default.
• W2328443402 created "2016-06-24" @default.
• W2328443402 creator A5033835378 @default.
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• W2328443402 date "2011-03-21" @default.
• W2328443402 modified "2023-10-05" @default.
• W2328443402 title "Effects of Methylation at Position 2 of Cation Ring on Rotational Dynamics of Imidazolium-Based Ionic Liquids Investigated by NMR Spectroscopy: [C₄mim]Br vs [C₄C₁mim]Br" @default.
• W2328443402 cites W1838460720 @default.
• W2328443402 cites W1919048594 @default.
• W2328443402 cites W1964172351 @default.
• W2328443402 cites W1966384865 @default.
• W2328443402 cites W1968000292 @default.
• W2328443402 cites W1974766637 @default.
• W2328443402 cites W1975469531 @default.
• W2328443402 cites W1979267912 @default.
• W2328443402 cites W1982048137 @default.
• W2328443402 cites W1982187210 @default.
• W2328443402 cites W1984614201 @default.
• W2328443402 cites W1985203159 @default.
• W2328443402 cites W1986024025 @default.
• W2328443402 cites W1998765981 @default.
• W2328443402 cites W1998873628 @default.
• W2328443402 cites W2000118617 @default.
• W2328443402 cites W2006605839 @default.
• W2328443402 cites W2022016445 @default.
• W2328443402 cites W2022183351 @default.
• W2328443402 cites W2023271753 @default.
• W2328443402 cites W2027819932 @default.
• W2328443402 cites W2028651663 @default.
• W2328443402 cites W2028665633 @default.
• W2328443402 cites W2032720602 @default.
• W2328443402 cites W2038261352 @default.
• W2328443402 cites W2040580919 @default.
• W2328443402 cites W2045022932 @default.
• W2328443402 cites W2045386163 @default.
• W2328443402 cites W2046527774 @default.
• W2328443402 cites W2047850266 @default.
• W2328443402 cites W2051611480 @default.
• W2328443402 cites W2056519991 @default.
• W2328443402 cites W2057285398 @default.
• W2328443402 cites W2060151241 @default.
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• W2328443402 cites W2062957628 @default.
• W2328443402 cites W2064188787 @default.
• W2328443402 cites W2069507544 @default.
• W2328443402 cites W2072994156 @default.
• W2328443402 cites W2076363135 @default.
• W2328443402 cites W2081679930 @default.
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• W2328443402 doi "https://doi.org/10.1021/jp200635h" @default.
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