Structure and phase transition in bis(pyrrolidinium) hexachlorometallates, (C4H8NH2)2MCl6 (M = Sn, Te and Pt), studied by X- ray diffraction, 35Cl NQR and DSC

H. Ishida, Y. Furukawa, S. Sato, S. Kashino

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9 Citations (Scopus)

Abstract

Single crystal X-ray diffraction, 35Cl nuclear quadrupole resonance (NQR) and differential scanning calorimetry (DSC) measurements were taken for bis(pyrrolidinium) hexachlorometallates, (C4H8NH2)2MCl6 (M = Sn, Te and Pt). A solid-solid phase transition was observed at 150(1), 159(1) and 134(1) K for stannate, tellurate and platinate, respectively. 35Cl NQR signals were observed in stannate and platinate, both of which showed a two-line spectrum in the high-temperature phase and a three-line spectrum in the low- temperature phase. The high-temperature phases of the three complexes were found to be isostructural with each other belonging to the space group C2/m (12). The C4H8NH2+ and MCl6/2- ions are connected by N-H···Cl hydrogen bonds forming parallel sheets in the crystals. Disorder of the cation ring appears in these high-temperature phases. Semi-empirical MO calculations were performed to estimate the stable structure of the pyrrolidinium ion. (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)95-103
Number of pages9
JournalJournal of Molecular Structure
Volume524
Issue number1-3
DOIs
Publication statusPublished - Jun 13 2000

Keywords

  • Cl nuclear quadrupole resonance
  • Phase transition
  • X-ray crystallography

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry
  • Inorganic Chemistry

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