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. Author manuscript; available in PMC: 2017 Feb 24.
Published in final edited form as: J Phys Chem B. 2015 Jul 2;119(28):8781–8792. doi: 10.1021/acs.jpcb.5b05354

Table 6.

Experimental refractive indices at the sodium D-line, nD a, for the studied ILs as a function of temperature T at 0.1 MPa. Available literature data at T = 298.15 K.

Ionic liquid nD (298.15 K) 104·(dnD/dT) / K-1 nD (298.15 K) Literature
[1C1Him][NTf2] 1.42203 -2.93 ± 0.01 n.a.
[1C2Him][NTf2] 1.42317 -3.012 ± 0.002 n.a.
[1C12C1Him][NTf2] 1.42490 -2.959± 0.003 n.a.
[1C13C1im][NTf2] 1.42101 -2.97 ± 0.02 n.a.
[1C23C1im][NTf2] 1.42319 -2.99 ± 0.01 1.4230(9)58
1.422047
1.4225148
1.4230749–51
1.4229852
[1C33C1im][NTf2] 1.42534 -3.02 ± 0.01 1.4252553
[1C23C2im][NTf2] 1.42512 -3.04 ±0.02 n.a.
[1C23C3im][NTf2] 1.42668 -3.08 ± 0.01 n.a.
[1C43C1im][NTf2] 1.42705 -3.10 ± 0.01 1.4265348
1.4269254,55
1.42756
1.451 57
1.4267250,51
[1C33C3im][NTf2] 1.42805 -3.10 ± 0.01 n.a.
a

in the temperature interval, nD, at a specific temperature, T, can be estimated using the following equation: nD(T / K) = nD (298.15 K) + dnD/dT·(T / K - 298.15 K).