Dirutenium holmium is a binary inorganic compound of holmium and ruthenium with the formula HoRu 2 , crystals.
| Diruthenium | |
|---|---|
| Are common | |
| Systematic name | Diruthenium |
| Traditional names | Holmium |
| Chem. formula | HoRu 2 |
| Rat formula | Ru 2 Ho |
| Physical properties | |
| condition | crystals |
| Molar mass | 367.07 g / mol |
| Density | 11.6 g / cm³ |
| Thermal properties | |
| T. melt. | ≈1750 ° C |
| Enthalpy of Education | -80.4 [1] kJ / mol |
| Classification | |
| Reg. CAS number | 12055-54-8 |
Getting
- Fusion of stoichiometric amounts of pure substances:
Physical Properties
Dirutenium holmium forms crystals of hexagonal syngony , space group P 6 3 / mmc , cell parameters a = 0.5244 nm , c = 0.8810 nm , Z = 4 , structure like zinczinc magnesium MgZn 2 ( Laves phase ) [2] [3] [ 4] .
The compound melts congruently at a temperature of ≈1750 ° C [2] .
Notes
- ↑ Qiti Guo, OJ Kleppaa. Standard enthalpies of formation of some holmium alloys, Ho + Me (Me = Ni, Ru, Rh, Pd, Ir, Pt), determined by high temperature direct synthesis calorimetry // Journal of Alloys and Compounds. - 1996. - T. 234 , No. 2 . - S. 280–286 . - DOI : 10.1016 / 0925-8388 (95) 02035-7 .
- ↑ 1 2 State Diagrams of Double Metal Systems / Ed. N.P. Lyakisheva. - M .: Metallurgy, 1997 .-- T. 2 .-- 1024 p. - ISBN 5-217-01569-1 .
- ↑ B. Predel. Ho - Ru (Holmium - Ruthenium) // Landolt-Börnstein - Group IV Physical Chemistry. - 2013 .-- S. 203 . - DOI : 10.1007 / 978-3-642-24778-1_129 .
- ↑ B. Predel. Ho-Ru (Holmium-Ruthenium) // Landolt-Börnstein - Group IV Physical Chemistry. - 1997. - T. 5G . - S. 1-2 . - DOI : 10.1007 / 10506626_1691 .