Order-disorder phase transitions in Zn2(C8H4O4)2 .C6H12N2 in atmospheres of noble gases

D. P. Pishchur, N. B. Kompankov, A. A. Lysova, S. G. Kozlova

Результат исследования: Научные публикации в периодических изданияхстатья

2 Цитирования (Scopus)

Аннотация

The molar heat capacity of Zn2(C8H4O4)2 .C6H12N2 (Zn-DMOF) was measured for the first time at 4.8–302 K in atmospheres of noble gases 3He, 4He, and 40Ar under pressures P up to 1.52·105 Pa. It is shown that phase transitions reported earlier at Tc = 13, 58.9, and 131.2 K are second-order phase transitions associated with the ordering/disordering of organic ligands in Zn-DMOF. The transition entropy (ΔSm) in the temperature range of phase transitions associated with the ordering/disordering of C6H12N2 molecules decreases at Tc = 13 K and increases at Tc = 58.9 K as P increases from 0.51·105 to 1.52·105 Pa. The values of ΔSm do not depend on P in the region of the phase transition at Tc = 131.2 K associated with the ordering/disordering of C8H4O4 2− anions.

Язык оригиналаанглийский
Страницы (с-по)147-153
Число страниц7
ЖурналJournal of Chemical Thermodynamics
Том130
DOI
СостояниеОпубликовано - 1 янв 2019

Fingerprint Подробные сведения о темах исследования «Order-disorder phase transitions in Zn<sub>2</sub>(C<sub>8</sub>H<sub>4</sub>O<sub>4</sub>)<sub>2</sub> <sup>.</sup>C<sub>6</sub>H<sub>12</sub>N<sub>2</sub> in atmospheres of noble gases». Вместе они формируют уникальный семантический отпечаток (fingerprint).

  • Цитировать