Versatility in Complexation of Aprotic Guest Molecules by Terphenyl-Based Bisfluorenol Hosts. Structural Modes in the Crystalline Inclusions and of a Guest-Free Host Compound

Crystalline
inclusion compounds of diol hosts 1 and 2 typical of a basic 2,2″-[1,1′:4′,4″]-terphenyl
moiety with two attached 9-fluorenol or tert-butyl-substituted
9-fluorenol units and a variety of aprotic guest molecules have been
prepared and studied with reference to their crystal structures. Common
and differing structural features among one another and including
previously described host–guest complexes of 1 and 2 with protic instead
of aprotic guest species are distinguished, indicating potential uses
in promising supramolecular inclusion formation and underscoring solvent
inclusion.

以带有两个连有9-芴醇或叔丁基取代9-芴醇单元的典型2,2″-[1,1′:4′,4″]-三联苯基骨架的二醇主体1与2，与多种非质子客体分子所形成的结晶包合物，已被合成并针对其晶体结构开展研究。本研究区分了该系列主客体复合物之间，以及此前报道的1、2与质子型而非非质子型客体所形成的主客体复合物之间的共有与差异化结构特征，表明其在颇具潜力的超分子包合构建中具备潜在应用价值，并强调了溶剂包合行为的重要性。