X-ray structure analysis of 4-cyano-4 '-n-undecycloxybiphenyl

The structure of a liquid crystal of 4-cyano-4'-n-undecyloxybiphenyl (C24H31NO) is determined by X-ray diffraction. The compound crystallizes in the monoclinic crystal system (space group C2/c) with the unit cell parameters a = 84.108(7) Angstrom, b = 7.159(2) Angstrom, c = 6.922(2) Angstrom, and beta = 91.6(4)degrees. The structure has been solved by direct methods and refined to the residual index R-1 = 0.067. Both phenyl rings are almost planar, and the dihedral angle between these rings is 31.5(6)degrees. (C) 2003 MAIK Nauka/Interperiodica.