Crystal structure and packing analysis of the liquid crystal dimer alpha,omega-bis(4-cyanobiphenyl-4-yloxy)octane

The crystal structure of the liquid crystal dimer α,ω-bis(4-cyanobiphenyl-4'-yloxy)octane has been determined from diffraction data obtained with synchrotron radiation. The structure is triclinic, with the space group P-1 with Z = 2 and the unit cell parameters are a= 7.135(5) Å, b= 12.811(5) Å...

Full description

Saved in:
Bibliographic Details
Published in:Liquid crystals 2001-03, Vol.28 (3), p.357-363
Main Authors: Malpezzi, Luciana, Brückner, Sergio, Ferro, Dino R., Luckhurst, Geoffrey R.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The crystal structure of the liquid crystal dimer α,ω-bis(4-cyanobiphenyl-4'-yloxy)octane has been determined from diffraction data obtained with synchrotron radiation. The structure is triclinic, with the space group P-1 with Z = 2 and the unit cell parameters are a= 7.135(5) Å, b= 12.811(5) Å, c= 15.639(5) Å, α= 75.800(5)°, β= 84.690(5)°, γ= 77.930(5)°. The flexible spacer linking the mesogenic groups is in the all-trans-conformation. Although the molecule has a potential centre of symmetry, it occupies a general position in the cell; this unusual behaviour has been investigated with the aid of a theoretical evaluation of the packing energy.
ISSN:0267-8292
1366-5855
DOI:10.1080/02678290010010824