Crystal structure of trimethylammonium tetrafluoroborate in three solid phases

Hiroyuki Ishida, Setsuo Kashino, Ryuichi Ikeda

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The crystal structure of (CH3)3NHBF4 was studied in three solid phases by X-ray diffraction techniques. The structures of the ionic plastic phase (Phase I) stable above 453 K and Phase II between 384 and 453 K are CsCl-type cubic (a = 5.772(4) Å) and tetragonal (a = 9.815(5) and c = 6.895(5) Å), respectively. The room temperature phase (Phase III) forms a monoclinic lattice (space group P21/m, a = 5.7017(8), b = 8.5724(9), c = 7.444(1) Å, and β= 102.76(1)°). BF4- ions in this phase were shown to be disordered in four orientations.

Original languageEnglish
Pages (from-to)765-768
Number of pages4
JournalZeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Issue number9-10
Publication statusPublished - 2000


  • Crystal structure
  • Disorder
  • Ionic plastic phase
  • X-ray diffraction

ASJC Scopus subject areas

  • Mathematical Physics
  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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