Conformational Transformations of (C12H25NH3 +)(Pyridinesulfonate) in the Solid State

Atsushi Funada, Shota Uchikawa, Norihisa Hoshino, Takashi Takeda, Tomoyuki Akutagawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The phase-transition behaviors, crystal structures, and dielectric properties of four kinds of simple 1:1 organic salts of (C12H25NH3 +)(benzenesulfonate) and (C12H25NH3 +)(pyridine sulfonates) were examined from the viewpoint of intermolecular hydrogen-bonding interactions and dynamic conformational transformation in molecular assemblies. Crystals of (C12H25NH3 +)(benzenesulfonate) and (C12H25NH3 +)(3-pyridinesulfonate) were isostructural and solid-solid and solid-liquid-crystal smectic A (SmA) phase transitions were observed. These two crystals formed rodlike cation-anion assemblies. However, the two salts, (C12H25NH3 +)(2-pyridinesulfonate) and (C12H25NH3 +)(4-pyridinesulfonate), formed largely bent L-shaped cation-anion conformations. Interesting conformational transformations from rodlike to L-shaped assemblies were observed in (C12H25NH3 +)(2-pyridinesulfonate) and (C12H25NH3 +)(3-pyridinesulfonate). Spare the rod: Dynamic conformational transformations from rodlike to L-shaped assemblies were observed in 1:1 simple organic salts.

Original languageEnglish
Pages (from-to)915-925
Number of pages11
JournalChemistry - An Asian Journal
Volume11
Issue number6
DOIs
Publication statusPublished - 2016 Mar 18

Keywords

  • conformation analysis
  • dielectric properties
  • ionic crystals
  • liquid crystals
  • phase transitions

ASJC Scopus subject areas

  • Biochemistry
  • Organic Chemistry

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