1,2,3,4-Tetra­phenyl­butane-1,4-dione benzene solvate and a brief analysis of the solvated organic structures in the Cambridge Structural Database

1,2,3,4-Tetra­phenyl­butane-1,4-dione crystallizes as a benzene solvate in a 1:1 ratio, C₂₈H₂₂O₂·C₆H₆. Both mol­ecules reside on crystallographic inversion centers. The carbon­yl group of (I) is coplanar with the adjacent phen­yl ring within 3.6 (3)°. A brief analysis of the organic structures included in the Cambridge Structural Database [Allen (2002). Acta Cryst. B58, 380-388] shows that at least 22.8% of them contain cocrystallized solvent and in 3.8% of these cases the solvent is benzene.