Packing modes of distyrylbenzene derivatives

A range of 1,4-distyrylbenzene derivatives were synthesized and characterized by single-crystal stal X-ray diffraction to investigate the effects of substitution on the resulting crystal lattices. Molecules in this report include 1,4-bis(2,2-diphenylethenyl)benzene (1), 1,4-bis(1-cyano-2,2-diphenylethenyl)benzene (2), 1,4-bis(1-cyano-2-phenylethenyl)benzene (3) 1,4-bis-(2,5-dimethoxystyryl)benzene (4), 1,4-bis(3,5-dimethoxystyryl)benzene (5), 2,5-difluoro-1-(pentafluorostyryl)-4-(4-tert-butylstyryl)benzene (6), and 1,4-bis(4-nitrostyrl)benzene.2DMF (7). The lattice of each is described and contrasted in Light of distyrylbenzene derivatives previously reported. The results of thermal analysis by differential scanning calorimetry are included to further examine the effect of substitution on crystal properties.