Pseudomerohedrally twinned crystal structure of 2,3-diphenylbuta-1,3-diene

Article abstract of DOI:10.1107/S0108270105008978

The title compound, C₁₆H₁₄, is twinned by reticular pseudomerohedry of twin index 2. The primitive monoclinic cell of the single crystal can be transformed into a B-centred pseudoorthorhombic supercell with a fourfold volume. The two-fold twin operation about the reciprocal a* axis of the primitive monoclinic cell is co-directional with the approximate C ₂ axis of the molecule and a symmetry element of the orthorhombic supercell. A tentative twin domain model is proposed.