ADDITION/CORRECTION pubs.acs.org/JPCB
Physical Properties of Ionic Liquids Consisting of the 1-Butyl3-methylimidazolium Cation with Various Anions and the Bis(trifluoromethylsulfonyl)imide Anion with Various Cations [The Journal of Physical Chemistry B 2008, 112, 81 DOI: 10.1021/ jp076462h]. Hui Jin, Bernie O'Hare, Jing Dong, Sergei Arzhantsev, Gary A. Baker, James F. Wishart, Alan J. Benesi, and Mark Maroncelli* The viscosity activation energies listed in Table 4 are incorrect due to a calculation error. These energies are related to the viscosity VTF fit parameters (eq 8 of 1) via the equation 2 d ln η T ð1Þ ¼ RB Eη R dð1=TÞ T - T0 The reported values were incorrect due to omission of the power of 2 on the temperature term in eq 1. The effect of this omission was to render the majority of the reported values too small by roughly a factor of 2.2. The original and corrected values are tabulated below: Table original #
ionic liquid
corrected
Eη(25 °C) /kJ mol-1 Eη(25 °C) /kJ mol-1
1 [Im41þ][BF4-]
17.9
37.4
2 [Im41þ][PF6-]
19.5
41.3
3 [Im41þ][Tf2N-]
14.1
30.8
4 [Im41þ][Tf3C-]
18.7
47.3
5 [Pr31þ][Tf2N-]
13.9
29.6
6 [Pr41þ][Tf2N-]
15.6
33.2
7 [Pr61þ][Tf2N-] 8 [Pr10,1þ][Tf2N-]
16.0 18.0
35.3 38.7
9 [Nip311þ][Tf2N-]
17.7
37.4
10 [Nip411þ][Tf2N-]
18.5
40.5
11 [Nip611þ][Tf2N-]
18.2
39.6
12 [Nip10,11þ][Tf2N-]
19.0
41.1
13 [Im21(OH)þ][Tf2N-]
17.3
38.1
14 [Pr21(OH)þ][Tf2N-]
13.1
33.0
15 [Nip211(OH)þ][Tf2N-] 16 [Pr31(OH)2þ][Tf2N-]
20.0 22.1
41.0 63.0
The corrected activation energies average 38 ( 5 kJ/mol. Rather than being comparable to the viscosity activation energies of monohydroxy alcohols as originally stated, the correct values are more similar to values of Eη found in short-chain diols.1 We also note that there is a loose correlation between the values of viscosity and these activation energies.
’ REFERENCES (1) Marcus, Y. The Properties of Solvents; Wiley: New York, 1998. DOI: 10.1021/jp108563p Published on Web 12/29/2010
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dx.doi.org/10.1021/jp108563p | J. Phys. Chem. B 2011, 115, 1333–1333
