Dynamics of molecular reorientations in t-butyl bromide studied by incoherent quasielastic neutron scattering

Alan J. Leadbetter*, Richard C. Ward, Robert M. Richardson

*Corresponding author for this work

    Research output: Contribution to journalArticle (Academic Journal)peer-review

    11 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)1067-1076
    Number of pages10
    JournalJournal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
    Volume81
    Issue number7
    DOIs
    Publication statusPublished - 1 Dec 1985

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