Платинатрихром

Платинатрихром
Общие
Систематическое
наименование		 Платинатрихром
Традиционные названия Трихромплатина
Хим. формула PtCr3
Рац. формула Cr3Pt
Физические свойства
Состояние кристаллы
Молярная масса 351,07 г/моль
Плотность 11,1 г/см³
Термические свойства
Температура
 • плавления ≈1600 °C
Энтальпия
 • образования -29 [1] кДж/моль
Классификация
Рег. номер CAS 12433-46-4
PubChem 71354712
SMILES
 
InChI
 
Приведены данные для стандартных условий (25 °C, 100 кПа), если не указано иное.

Платинатрихром — бинарное неорганическое соединение платины и хрома с формулой PtCr3, кристаллы.

Получение

  • Сплавление стехиометрических количеств чистых веществ:

Физические свойства

Платинатрихром образует кристаллы кубической сингонии, пространственная группа P m3n, параметры ячейки a = 0,4708 нм, Z = 2, структура типа силицида трихрома Cr3Si[2][3][4][5][6].

Соединение конгруэнтно плавится при температуре ≈1600°C и имеет широкую область гомогенности 17÷23 ат.% платины[2].

Примечания

  1. ↑ Johannes Preußner, Sara Prins, Rainer Völkl, Zi-Kui Liu, Uwe Glatzel. Determination of phases in the system chromium–platinum (Cr–Pt) and thermodynamic calculations // Materials Science and Engineering A. — 2009. — Т. A 510–511. — С. 322–327. Архивировано 13 января 2015 года.
  2. ↑ 1 2 Диаграммы состояния двойных металлических систем / Под ред. Н. П. Лякишева. — М.: Металлургия, 1997. — Т. 2. — 1024 с. — ISBN 5-217-01569-1.
  3. ↑ P. Franke, D. Neuschütz. Cr-Pt // Landolt-Börnstein - Group IV Physical Chemistry. — 2004. — Т. 19B2. — С. 1-5. — doi:10.1007/10757405_89.
  4. ↑ H. Okamoto. Cr-Pt (Chromium-Platinum) // Journal of Phase Equilibria and Diffusion. — 2009. — Т. 30, № 3. — С. 295-296. — doi:10.1007/s11669-009-9507-0.
  5. ↑ B. Predel. [Landolt-Börnstein - Group IV Physical Chemistry Cr-Pt (Chromium-Platinum)]. — 1994. — Т. 5d. — С. 1-4. — doi:10.1007/10086090_1003.
  6. ↑ M. Venkatraman, J. P. Neumann. The Cr-Pt (Chromium-Platinum) system // Bulletin of Alloy Phase Diagrams. — 1990. — Т. 11, № 1. — С. 16-21. — doi:10.1007/BF02841579.

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