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Kolekcje
Inne
Molecular dynamics and phase transitions in tris(dimethylammonium) enneaiododibismuthate(III) as studied by DSC, dilatometric, IR, 1H NMR and dielectric methods.
Autorzy
Rok wydania
1994
Czasopismo
Numer woluminu
46
Strony
257-267
DOI
10.1080/01411599408200331
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The phase transitions and molecular motions of the cations were studied in the temperature range 130–300 K in a [(CH3)2NH2]3Bi2I9 (DMAIB) crystal by DSC, IR, dilatometric, dielectric and 1H NMR methods. It was confirmed that DMAIB undergoes three phase transitions at T c1 = 305 K, T c2 = 285 K and T c3 = 235 K. In the high-temperature phases I–II the cations undergo isotropic reorientations, and in phases III–IV both C3(CH3) motion and n-fold ionic reorientations take place.
Słowa kluczowe
Alkylammonium halogenobismuthates, phase transition, Infrared, dielectric, thermal expansion, NMR
Adres publiczny
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