Sakuntala Gupta, G. Chang-Chien, Wei-Shan Lee
May 1, 2002
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Journal
Liquid Crystals
Abstract
The crystal and molecular structures of the mesogenic monomer 3-[4-(4'-ethylbiphenyl)]1-propene, molecular formula CH3-CH2-C6H4-C6H4-CH2-CH=CH2, has been determined by X-ray diffraction analysis at 293(2) K. The compound crystallizes in the form of a noncentrosymmetric monoclinic system, space group Pc, with two molecules per cell. The cell parameters are a = 13.90(5)Å, b = 5.75(1)Å, c =9.54(5)Å and β = 116.1(3)°. Refinement leads to R = 0.0554. Both phenyl rings adopt boat conformations and are nearly coplanar. The molecules form a smectic-like layer structure in the crystalline state.