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. Author manuscript; available in PMC: 2018 Jul 19.
Published in final edited form as: J Phys Chem B. 2015 Nov 5;119(46):14756–14765. doi: 10.1021/acs.jpcb.5b08658

Table 2.

Activation energies for reorientational motion in EMIM TFSA determined from 1H, 2H and 19F T1 data (kJ/mol).

Position EMIM-MD3 EMIM-TD3 EMIM-D2 EMIM
H4, H5 11.8 ± 0.8 10.3 ± 0.2 10.0 ± 0.2 8.3 ± 0.5
H2 9.9 ± 0.7 10.3 ± 0.3 10.8 ± 0.3 8.4 ± 0.5
TCH3 12.4 ± 0.4 - 12.3 ± 0.3 9.1 ± 0.5
CH2 16.9 ± 0.8 11.2 ± 0.3 - 12.3 ± 0.2
NCH3 - 10.3 ± 0.3 11.2 ± 0.4 10.1 ± 0.4
TFSA (19F) 11.8 ± 0.2 12.2 ± 0.3 12.6 ± 0.5 12.3 ± 0.3
2H T1 data 15.0 ± 0.3 16.2 ± 0.2 11.6 ± 0.1 -