Imidazolium units represent the main structural motifs for the formation of unconventional C–H···Cl– hydrogen bonds which become the noncovalent forces driving the anion interactions exibited by dicationic [14]imidazoliophanes in the solid state, while C–H···O hydrogen bonds with water play a crucial role in governing the conformation of the solid–state aggregates, as well as in solution, wherein NMR studies also reveal the importance of hydrogen bonds in controlling the tendency to anion binding.
咪唑鎓单元代表了形成非常规C–H…Cl–氢键的主要结构基序,这些氢键成为驱动固态双离子[14]咪唑硫烷表现出的阴离子相互作用的非共价力,而C–H…与水的 O 氢键在控制固态聚集体以及溶液中的构象方面发挥着至关重要的作用,其中 NMR 研究还揭示了氢键在控制阴离子结合趋势方面的重要性。
Imidazolium-Based [14]Heterophanes as Models for Anion Recognition