Open AccessDeuteron Relaxation Study of the Reorienting Methyl Groups in p-Azoxyanisole
Author(s) -
M. Wiszniewska,
Ronald Y. Dong,
E. Tomchuk,
E. Bock
Publication year - 1974
Publication title -
canadian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.323
H-Index - 68
eISSN - 1480-3291
pISSN - 0008-4042
DOI - 10.1139/v74-331
Subject(s) - chemistry , isotropy , liquid crystal , deuterium , quadrupole , relaxation (psychology) , spin–lattice relaxation , coupling constant , activation energy , methyl group , nuclear magnetic resonance , group (periodic table) , condensed matter physics , atomic physics , organic chemistry , optics , physics , nuclear quadrupole resonance , psychology , social psychology , particle physics
The deuteron spin-lattice relaxation times were measured in the nematic and isotropic phases of p-azoxyanisole(CD 3 ) 2 . An apparent activation energy for the methyl group reorientation in the isotropic phase is obtained. The quadrupole coupling constant along the C—D bond is found to be 147 ± 8 kHz.