NMR and X-ray Investigations of a Plastic Crystalline Phase in MBBA
- 1 January 1985
- journal article
- Published by Taylor & Francis in Molecular Crystals and Liquid Crystals
- Vol. 126 (2-4) , 161-173
- https://doi.org/10.1080/00268948508084787
Abstract
Restricted AccessWideline and high resolution NMR studies have been carried out on MBBA in its isotropic, nematic and solid phases. Isotropic and nematic phase spectra correspond to what has been reported earlier. In the solid phase, contrary to expectations, very intense narrow signals similar to signals of the isotropic phase have been observed for the first time at temperatures close to the solid ↔ nematic phase transition temperature. This indicates rapid reorientational or translational motion in the system. The X-ray results however confirm the existence of translational order. The results are interpreted as indicative of the existence of a plastic crystalline phase in MBBAKeywords
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