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Kolekcje
Inne
On structural phase transitions in 4-aminopyridinium fluoroborate, [4-NH2C5H5N][BF4]: differential scanning calorimetry, dielectric and infrared studies.
Autorzy
Rok wydania
2004
Czasopismo
Journal of Molecular Structure
Numer woluminu
704
Strony
177-187
DOI
10.1016/j.molstruc.2004.01.066
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Crystal structure of the 4-aminopyridinium tetrafluoroborate, [4-NH2C5H5N][BF4], has been determined at 293 K by means of X-ray diffraction as monoclinic space group, C2. The crystal shows a reach sequence of phase transition, four solid-solid transitions: at 250, 281, 388 and 485 K on heating. Most of the phase transitions, except that at 388 K, are clearly of first order and classified as an ‘order-disorder’ type. The rotational disorder both of cations and anions was studied by differential scanning calorimetry, dielectric and infrared spectroscopy. The low temperature phase transitions are associated with plastic crystal behavior.
Słowa kluczowe
Tetrafluoroborate, Plastic crystals, Phase transition Differential Scanning Calorimeter, Dielectric, Infrared, X-ray
Adres publiczny
https://doi.org/10.1016/j.molstruc.2004.01.066
Strona internetowa wydawcy
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