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We report the results of a comprehensive 81Br NMR spectroscopic study of the structure and dynamics of two room temperature ionic liquids (RTILs), 1‐butyl‐3‐methylimidazolium bromide ([C4mim]Br) and 1‐butyl‐2,3‐dimethylimidazolium bromide ([C4C1mim]Br), in both liquid and crystalline states. NMR parameters in the gas phase are also simulated for stable ion pairs using quantum chemical calculations...
We report the results of a 1 H NMR spectroscopic study of cation dynamics in the RTIL, 1-butyl-3-methylimidazolium bromide, in its crystalline state with two different but considerably low water contents, 30ppm and 200ppm. The results indicate the presence of a minor liquid-like (or solution) component in the crystalline state in samples with the higher water contents. The relative fraction...
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