Crystal structure of room-temperature ionic liquid 1-butyl-isoquinolinium gallium tetrachloride [(BIQL)GaCl4] - 14/02/08
, Zhang-Fa Tong, Feng-Yun Wei, Shuang-Gui Qing
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Abstract |
The crystal structure of 1-butyl-isoquinolinium gallium tetrachloride [(BIQL)GaCl4], which forms room-temperature ionic liquids, has been determined by X-ray diffraction of its single crystal at 113K. The title crystal belongs to the monoclinic system space group P21/c with a=7.1438(12)Å, b=14.3490(14)Å, c=16.3531(18)Å, β=94.885(7)°, V=1670.2(4)Å3 for Z=4 and FW=397.81, μ=0.124mm−1, F(000)=800, Dc=1.582mgm−3, R=0.0266 and wR=0.0606 for 4068 observed reflections (I>2.00σ(I)). The ionic liquid of (BIQL)GaCl4 has lamellar structure as mainly π electron plane of isoquinoline interleave and the layer distance is 3.431Å connected with GaCl4− structure size. The cation and anion of (BIQL)GaCl4 arrange orderly in pair and the results indicate that coulombic attraction is dominant, although weak local hydrogen bonds (C–H
Cl) exist simultaneously.
Keywords : Ionic liquid, Crystal structures, 1-Butyl-isoquinolinium gallium tetrachloride
Esquema
Vol 11 - N° 1-2
P. 90-94 - janvier 2008 Regresar al número
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