H. Matsumoto et al., Room temperature molten salts based on tetraalkylammonium cations and bis(trifluoromethylsulfonyl)imide, CHEM LETT, (2), 2001, pp. 182-183
Symmetric and aliphatic tetralkylammonium cations (QA) form room temperatur
e molten salts (RTMS) with bis(trifluoromethylsulfonyl)imide (TFSI). Tetrap
entylammonium (TPA) is the smallest cation to form RTMS with TFSI. The visc
osity and the specific conductivity of TPA-TFSI at 25 degreesC are 430 mPa.
s and 0.154 mS . cm(-1), respectively. This is the first report of the prep
aration of RTMS based on symmetric QA.