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Kolekcje
Inne
Crystal structure and characterization of a novel ferroelastic ionic crystal: 1-aminopyridinium iodide (C5H7N2)+I-.
Autorzy
Rok wydania
2012
Czasopismo
Numer woluminu
537
Strony
38-47
DOI
10.1016/j.cplett.2012.03.101
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
1-Aminopyridinium iodide (API) undergoes a reversible first-order phase transition (PT) II → I at 384 K. The single-crystal X-ray diffraction studies have been carried out at 110, 280 and 401 K. The compound crystallizes in the monoclinic space group P21/c (phase II) and exhibits ferroelastic properties. High temperature paraelastic phase (I) is described by the trigonal symmetry (space group ) with the 6-site cations disorder. The mechanism of PT is governed by both cationic dynamics and shifts of the I− anions. The conductivity that emerges when approaching the PT temperature is believed to be associated with the charge transfer from I− anion to the 1-aminopyridinium cation.
Adres publiczny
https://doi.org/10.1016/j.cplett.2012.03.101
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