Abstract
Four new host compounds of dumbbell shape featuring bulky 2,3,4,5-tetraphenylcyclopenta-2,4-dien-1-ol moieties attached to both ends of a linear spacer element of different lengths comprising both 1,4-phenylene and ethynylene subunits are synthesized and corresponding crystal inclusions involving DMSO, DMF, MeCN, and THF as guest solvents (seven examples of inclusion compounds) are isolated. X-ray structural analysis shows the formation of 1:2 host/guest entities being a basic supramolecular motif of the crystal inclusions. Nevertheless, additional solvent molecules seem to be necessary for stabilization of the crystal structure in most cases of the inclusion species indicating the occurrence of unusually high stoichiometric ratios of included solvent as a specific characteristic of the new type of host molecule.
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