Engineering polar crystal structures by π–π stacking of N-perfluoroarylbenzimidazoles
作者:Hanan I. Althagbi、Joseph R. Lane、Graham C. Saunders、Samantha J. Webb
DOI:10.1016/j.jfluchem.2014.07.024
日期:2014.10
1-(4-Nitrilo-2,3,5,6-tetrafluorophenyl)benzimidazole, 2, and 1-(2,3,5,6-tetrafluoropyridyl)-2-methylbenzimidazole, 4, crystallize in the polar space groups Cc and Pca21, respectively. Both structures arise from π–π stacking interactions. For 2 the stacking gives rise to columns of alternating complementary rings that are approximately orthogonal. For 4 the stacking leads to parallel columns, with the
1-(4-次氮基- 2,3,5,6-四氟苯基)苯并咪唑,2,和1-(2,3,5,6- tetrafluoropyridyl)-2-甲基苯并咪唑,4,结晶在极性空间群抄送和PCA 2 1,分别。这两种结构都是由π-π堆积相互作用产生的。为2的层叠引起交替的互补环是大致垂直的列。对于4堆叠引线平行的列,从所得到的分子的片材,在它们之间不存在π-π堆积相互作用的排列所产生的极性。的合成2和4 还报道了相关的全氟芳基苯并咪唑类。