Temperature-dependent crystal structure analysis of methyl iodide by high-resolution neutron powder diffraction

Richard M. Ibberson, Michael Prager

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

High resolution neutron powder diffraction data recorded at 4.5 K confirm the orthorhombic structure of methyl iodide reported previously by Kawaguchi et al. (1973) from an X-ray single-crystal study at 193 K. The present study, using neutron powder diffraction, provides more precise structural parameters and reliable atomic coordinates for the hydrogen atoms enabling the methyl group libration to be analysed as a function of temperature up to 193 K.

Original languageEnglish
Pages (from-to)416-419
Number of pages4
JournalZeitschrift fur Kristallographie
Volume222
Issue number8
DOIs
StatePublished - 2007
Externally publishedYes

Funding

Acknowledgments. This work has been supported by CCLRC with the provision of neutron beam time.

Keywords

  • Methyl iodide
  • Neutron scattering
  • Powder diffraction structure analysis
  • Rotation barrier
  • TLS

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