ORIENTATIONAL CHANGE OF THE TRIFLUOROMETHYL GROUP AT THE FERROELECTRIC-ANTIFERROELETRIC TRANSITION OBSERVED BY NMR-SPECTROSCOPY

Authors
YOSHIDA S JIN B TAKANISHI Y ISHIKAWA K TAKEZOE H FUKUDA A NAKAI T MIYAJIMA S
Citation
S. Yoshida et al., ORIENTATIONAL CHANGE OF THE TRIFLUOROMETHYL GROUP AT THE FERROELECTRIC-ANTIFERROELETRIC TRANSITION OBSERVED BY NMR-SPECTROSCOPY, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 301, 1997, pp. 203-208
Citations number
16
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
301
Year of publication
1997
Pages
203 - 208
Database
ISI
SICI code
1058-725X(1997)301:<203:OCOTTG>2.0.ZU;2-9
Abstract
The temperature dependence of the order parameter of the -CF3 group, S -CF3, at the chiral part in 4-[(1-trifluoromethylhepthyloxy)carbonyl]p henyl [(4'-octyloxy)biphenyl]-4-carboxylate (TFMHPOBC) has been invest igated by NMR spectroscopy. The discontinuous change of S-CF3 was obse rved at the ferroelectric-antiferroelectric phase transition. This sug gests the importance of the conformation around the chiral center for the appearance of the antiferroelectric phase.