Existence of nearly-free hydrogen bonds in an ionic liquid, N,N-diethyl-N-methyl-N-(2-methoxyethyl) ammonium tetrafluoroborate-water at 77 K.
When making the glassy water-ionic liquid, N,N-diethyl-N-methyl-N-(2-methoxyethyl) ammonium tetrafluoroborate [DEME][BF(4)] solution, the water molecule existing as a single molecule without self-associated state is preserved even at 77 K and survives not to form the hydrogen bond network among themselves as in pure H(2)O liquid. The water molecule might loosely interact with BF(4)(-) anions. At water-rich concentration, H(2)O ice crystals and the water molecules in the ionic liquid coexist as a mixture, which may result from microheterogeneities in the solid aqueous ionic liquid solution.
Yoshimura
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Y
Department of Applied Chemistry, National Defense Academy, Yokosuka, Kanagawa 239-8686, Japan. muki@nda.ac.jp
Goto
T
T
Abe
H
H
Imai
Y
Y