Родийтрииттрий

Родийтрииттрий
Общие
Систематическое
наименование		 Родийтрииттрий
Традиционные названия Трииттрийродий
Хим. формула RhY3
Рац. формула Y3Rh
Физические свойства
Состояние кристаллы
Молярная масса 369,62 г/моль
Плотность 5,7 г/см³
Термические свойства
Температура
 • разложения ≈1200 °C
Энтальпия
 • образования -200 [1] кДж/моль
Приведены данные для стандартных условий (25 °C, 100 кПа), если не указано иное.

Родийтрииттрий — бинарное неорганическое соединение иттрия и родия с формулой RhY3, кристаллы.

Получение

  • Спекание стехиометрических количеств чистых веществ:

Физические свойства

Родийтрииттрий образует кристаллы гексагональной сингонии, пространственная группа P nma, параметры ячейки a = 0,7138 нм, b = 0,9438 нм, c = 0,6319 нм, Z = 4, структура типа карбида трижелеза Fe3C [2][3].

Соединение образуется по перитектической реакции при температуре ≈1200°С[3].

Примечания

  1. ↑ Hart G. L. W., Curtarolo S., Massalski T. B., Levy O. Comprehensive Search for New Phases and Compounds in Binary Alloy Systems Based on Platinum-Group Metals, Using a Computational First-Principles Approach (англ.) // Physical Review X / J. Pullin — APS, 2013. — Vol. 3, Iss. 4. — ISSN 2160-3308 — doi:10.1103/PHYSREVX.3.041035 — arXiv:1308.4357
  2. ↑ Диаграммы состояния двойных металлических систем / Под ред. Н. П. Лякишева. — М.: Машиностроение, 2000. — Т. 3 Книга 2. — 448 с. — ISBN 5-217-02932-3.
  3. ↑ 1 2 Predel B. Rh-Y (Rhodium-Yttrium) (англ.) // Phase Equilibria, Crystallographic and Thermodynamic Data of Binary Alloys · Pu-Re – Zn-Zr — Otfried Madelung: Springer Science+Business Media, 1998. — P. 1—2. — (Landolt-Börnstein - Group IV Physical Chemistry; Vol. 5J) — ISBN 978-3-540-61742-6 — doi:10.1007/10551312_2628

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