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Conformational Transformations of (C 12 H 25 NH 3 + )(Pyridinesulfonate) in the Solid State
Author(s) -
Funada Atsushi,
Uchikawa Shota,
Hoshino Norihisa,
Takeda Takashi,
Akutagawa Tomoyuki
Publication year - 2016
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201501442
Subject(s) - isostructural , crystallography , intermolecular force , chemistry , hydrogen bond , crystal structure , ion , solid state , phase transition , pyridine , phase (matter) , crystal (programming language) , molecule , organic chemistry , physics , quantum mechanics , computer science , programming language
The phase‐transition behaviors, crystal structures, and dielectric properties of four kinds of simple 1:1 organic salts of (C 12 H 25 NH 3 + )(benzenesulfonate) and (C 12 H 25 NH 3 + )(pyridine sulfonates) were examined from the viewpoint of intermolecular hydrogen‐bonding interactions and dynamic conformational transformation in molecular assemblies. Crystals of (C 12 H 25 NH 3 + )(benzenesulfonate) and (C 12 H 25 NH 3 + )(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, (C 12 H 25 NH 3 + )(2‐pyridinesulfonate) and (C 12 H 25 NH 3 + )(4‐pyridinesulfonate), formed largely bent L ‐shaped cation–anion conformations. Interesting conformational transformations from rodlike to L ‐shaped assemblies were observed in (C 12 H 25 NH 3 + )(2‐pyridinesulfonate) and (C 12 H 25 NH 3 + )(3‐pyridinesulfonate).