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2,2″-[1,1′:4′,4″]-三联苯基为基本结构单元、连接有两个9-芴醇或叔丁基取代9-芴醇单元的二醇主体1和2，结合多种非质子客体分子所形成的晶体包合物已被合成，并针对其晶体结构开展了研究。本研究区分了此类晶体包合物彼此之间，以及其与此前报道的1、2采用质子客体而非非质子客体形成的主客体配合物之间的共有与差异化结构特征，结果表明该类体系在极具潜力的超分子包合构筑领域具备潜在应用价值，同时凸显了溶剂包合现象的研究意义。