Fluorenonophane chloro-benzene solvate: mol-ecular and crystal structures.

The title compound, 1 ,7 -3,5,9,11-tetra-oxa-1,7(2,7)-difluorena-4,10(1,3)-dibenzena-cyclo-dodeca-phane-1,7-dione (fluorenonophane), exists as a solvate with chloro-benzene, CHO·CHCl. The fluorenonophane contains two fluorenone fragments linked by two -substituted benzene fragments. Some decrease in its macrocyclic cavity leads to a stacking inter-action between the tricyclic fluorenone fragments.