TY - JOUR
T1 - Dynamics of molecular reorientations in t-butyl bromide studied by incoherent quasielastic neutron scattering
AU - Leadbetter, Alan J.
AU - Ward, Richard C.
AU - Richardson, Robert M.
PY - 1985/12/1
Y1 - 1985/12/1
N2 - The whole-molecule motions in the three solid phases of t-butyl bromide have been studied using incoherent quasielastic neutron-scattering measurements. In all three solid phases the molecules undergo rapid reorientational motion about their C-Br axes in a three-fold potential. This was the only observable motion in the lowest-temperature phase (phase III), whilst in phase II an additional motion consisting of ca. 30-60° fluctuations of the dipolar axis was found. In phase I the observed motion was consistent with a model for isotropic rotational diffusion of the molecules. A comparison between the whole-molecule reorientations in t-butyl bromide, chloride and cyanide is made.
AB - The whole-molecule motions in the three solid phases of t-butyl bromide have been studied using incoherent quasielastic neutron-scattering measurements. In all three solid phases the molecules undergo rapid reorientational motion about their C-Br axes in a three-fold potential. This was the only observable motion in the lowest-temperature phase (phase III), whilst in phase II an additional motion consisting of ca. 30-60° fluctuations of the dipolar axis was found. In phase I the observed motion was consistent with a model for isotropic rotational diffusion of the molecules. A comparison between the whole-molecule reorientations in t-butyl bromide, chloride and cyanide is made.
UR - http://www.scopus.com/inward/record.url?scp=0004563337&partnerID=8YFLogxK
U2 - 10.1039/F29858101067
DO - 10.1039/F29858101067
M3 - Article (Academic Journal)
AN - SCOPUS:0004563337
SN - 0300-9238
VL - 81
SP - 1067
EP - 1076
JO - Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
JF - Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
IS - 7
ER -