The tetraaryl-substituted allenes 1-8 are synthesized, and their properties in crystal inclusion are determined. Dependent on the type and number of the substituents, host cornpounds result, which have different inclusion properties and clathrate selectivities. Host 1 h forms inclusion compounds with a wide range of apolar and relatively polar cyclic guest solvents (26 inclusions altogether), while 2, 4, 5, and 7b form only one or two inclusions. In two- ...