Puvaneswary Subramaniam, Alias Yatimah, Ng Seik Weng
Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
Acta Crystallogr Sect E Struct Rep Online. 2009 Jul 11;65(Pt 8):o1830. doi: 10.1107/S1600536809026336.
The title imidazolium-based ionic-liquid salt, C(18)H(24)N(4) (2+)·2PF(6) (-), has the cation lying about a center of inversion. The five-membered imidazole ring is disordered over two positions (the methyl substituents are ordered). This imidazole ring is approximately perpendicular to the six-membered phenyl-ene ring [dihedral angle = 81.3 (8)° for one disorder component and 83.8 (8)° for the other; the two components are off-set by 2.7 (8)°]. The crystal is a non-merohedral twin with a twin component of 23%.
标题为基于咪唑鎓的离子液体盐C(18)H(24)N(4)(2+)·2PF(6)(-)，其阳离子位于一个反演中心周围。五元咪唑环在两个位置上无序（甲基取代基有序）。该咪唑环大致垂直于六元亚苯基环[一个无序组分的二面角为81.3 (8)°，另一个为83.8 (8)°；两个组分相差2.7 (8)°]。该晶体是一个非镜像孪晶，孪晶组分占23%。
