1-ethyl-3-methylimidazolium based ionic liquids containing cyano groups: Synthesis, characterization, and crystal structure

被引：221

作者：

Yoshida, Y ^{[1
]}

Muroi, K

Otsuka, A

Saito, G

Takahashi, M

Yoko, T

机构：

[1] Kyoto Univ, Grad Sch Sci, Div Chem, Sakyo Ku, Kyoto 6068502, Japan

[2] Kyoto Univ, Ctr Low Temp & Mat Sci, Sakyo Ku, Kyoto 6068502, Japan

[3] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan

来源：

INORGANIC CHEMISTRY | 2004年 / 43卷 / 04期

关键词：

D O I：

10.1021/ic035045q

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

New 1-ethyl-3-methylimidazolium (EMI) salts [EMI][C(CN)(3)] and [EMI][Ag(CN)(2)] were prepared and characterized. The C(CN)(3) salt has a melting point at -11 degreesC and shows a low viscosity (18 cP) and a high ionic conductivity (1.8 x 10(-2) S cm(-1)) at room temperature. This conductivity is less than that of [EMI][N(CN)(2)] salt (2.7 x 10(-2) S cm(-1)), possibly due to the larger molecular weight of the anion. The first EMI salt containing Ag(I) complexes [EMI][Ag(CN)(2)] has a higher melting point of 73 degreesC. In the crystal, the C-H(...)pi interionic interactions between cations construct zigzag chains in the cationic two-dimensional layer. Close (AgAg)-Ag-.. interionic contacts of 3.226(1) Angstrom were observed in the one-dimensional anionic chain, and the relatively high melting point among the EMI salts with a monoanion appears to be governed essentially by these direct (AgAg)-Ag-... interactions.

引用

页码：1458 / 1462

页数：5

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