Crystal Structures of 6OCB and 7OCB

Crystal structures of title compounds have been determined by single crystal x-ray analysis. Crystal data. 4′-Hexyloxy-4-cyanobiphenyl (6OCB), Molecular structures in both crystals are very similar with twisted biphenyl moieties and fully extended paraffin chains. Dimers are formed by close contacts of CN groups between neighboring molecules (C-N: 3.56 and 3.40 Å for 6OCB and 3.55 and 3.39 Å for 7OCB). The neighboring dimers in 6OCB are overlapped half-and-half, while those in 7OCB are arranged in a smectic-like layer structure.