Тетрастаннид нонанатрия

Тетрастаннид нонанатрия
Общие
Систематическое
наименование		 Тетрастаннид нонанатрия
Хим. формула Na9Sn4
Рац. формула Sn4Na9
Физические свойства
Состояние кристаллы
Молярная масса 681,75 г/моль
Плотность 2,94 г/см³
Термические свойства
Температура
 • плавления 478 °C
Классификация
Рег. номер CAS 66531-07-5
Приведены данные для стандартных условий (25 °C, 100 кПа), если не указано иное.

Тетрастаннид нонанатрия — бинарное интерметаллическое неорганическое соединение натрия и олова с формулой Na9Sn4, кристаллы.

Получение

  • Сплавление стехиометрических количеств чистых веществ:

Физические свойства

Тетрастаннид нонанатрия образует кристаллы ромбической сингонии, пространственная группа C mcm, параметры ячейки a = 0,542 нм, b = 0,939 нм, c = 2,962 нм, Z = 4, структура типа тетрагерманийноналития Li9Ge4 [1][2][3][4].

Соединение конгруэнтно плавится при температуре 478°C [2].

Примечания

  1. ↑ Wiking Midler, Klaus Volk. Die Strukturen der Phasen Na9Sn4 und Na15Sn4 // Z. Naturforsch.. — 1978. — Т. 33b. — С. 275-278. Архивировано 24 октября 2014 года.
  2. ↑ 1 2 Диаграммы состояния двойных металлических систем / Под ред. Н. П. Лякишева. — М.: Машиностроение, 2001. — Т. 3 Книга 1. — 972 с. — ISBN 5-217-02843-2.
  3. ↑ B. Predel. Na-Sn (Sodium-Tin) // Landolt-Börnstein - Group IV Physical Chemistry. — 1997. — Т. 5H. — С. 1-4. — doi:10.1007/10522884_2166.
  4. ↑ J. Sangster, C. W. Bale. The Na-Sn (Sodium-Tin) system // Journal of Phase Equilibria. — 1998. — Т. 19, № 1. — С. 76-81. — doi:10.1361/105497198770342797.

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