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Inne
1H NMR, DSC, dielectric and dilatometric studies of phase transitions and molecular dynamics in N(C2H5)4SbCl4.
Autorzy
Rok wydania
1994
Czasopismo
Physica Status Solidi A-Applications and Materials Science
Numer woluminu
144
Strony
81-89
DOI
10.1002/pssa.2211440109
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The results of dielectric, dilatometric, 1H NMR, and DSC studies on N(C2H5)4SbCl4 crystals are presented. The title compound undergoes two phase transitions at Tc1 = 272 K reversible of first order and at Tc2 = 393 K irreversible. The values of transition entropies and enthalpies are compared with those of other tetraethylammonium halogenoantimonates and bismuthates (III). The spin-lattice relaxation times and the values of the second moments of the 1H NMR line for the N(C2H5)4SbCl4 crystal are measured in the temperature range of 70 to 400 K. Two minima of T1 are observed. They are attributed to CH3 group reorientations. The activation energies for the processes are determined.
Adres publiczny
https://doi.org/10.1002/pssa.2211440109
Strona internetowa wydawcy
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