Дисеребронатрий

Дисеребронатрий
Общие
Систематическое
наименование		 Дисеребронатрий
Традиционные названия Натрийдисеребро
Хим. формула NaAg2
Рац. формула Ag2Na
Физические свойства
Состояние кристаллы
Молярная масса 238,73 г/моль
Плотность 6,3 г/см³
Термические свойства
Температура
 • разложения 322 °C
Энтальпия
 • образования -29,8 [1] кДж/моль
Классификация
Рег. номер CAS 91572-30-4
Приведены данные для стандартных условий (25 °C, 100 кПа), если не указано иное.

Дисеребронатрий — бинарное неорганическое соединение, интерметаллид серебра и натрия с формулой NaAg2, кристаллы.

Получение

  • Сплавление стехиометрических количеств чистых веществ:

Физические свойства

Дисеребронатрий образует кристаллы кубической сингонии, пространственная группа F d3m, параметры ячейки a = 0,792 нм, Z = 8, структура типа магнийдимеди MgCu2 [2][3][4].

Соединение образуется при температуре 322 °C.

Примечания

  1. ↑ Hao D., Bu M., Wang Y., Tang Y., Gao Q., Wang M., Hu B., Du Y. Thermodynamic modeling of the Na-X (X = Si, Ag, Cu, Cr) systems // Journal of Mining and Metallurgy B: Metallurgy. — 2012. — Т. 48, № 2. — С. 273-282. — doi:10.2298/JMMB120113024H.
  2. ↑ Диаграммы состояния двойных металлических систем / Под ред. Н. П. Лякишева. — М.: Машиностроение, 1996. — Т. 1. — 992 с. — ISBN 5-217-02688-X.
  3. ↑ B. Predel. Ag-Na (Silver-Sodium) // Landolt-Börnstein - Group IV Physical Chemistry. — 1991. — Т. 5a. — С. 1-2. — doi:10.1007/10000866_46.
  4. ↑ A. D. Pelton. The Ag−Na (Silver-Sodium) system // Bulletin of Alloy Phase Diagrams. — 1986. — Т. 7, № 2. — С. 133-136. — doi:10.1007/BF02881549.


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