Tripraseodimunca - aluminum - binary inorganic compound, intermetallic aluminum and praseodymium with the formula Al 11 Pr 3 , crystals.
| Tripraseodimundecaaluminium | |
|---|---|
| Are common | |
| Systematic name | Tripraseodimundecaaluminium |
| Traditional names | Undeca aluminium trypraseodymium |
| Chem. formula | Al 11 Pr 3 |
| Rac formula | Pr 3 Al 11 |
| Physical properties | |
| condition | crystals |
| Molar mass | 719.52 g / mol |
| Density | 4.1 g / cm³ |
| Thermal properties | |
| T. | 1240 ° C [1] |
| Classification | |
| Reg. CAS number | 12285-04-0 |
Getting
- Fusion of stoichiometric amounts of pure substances:
Physical Properties
Tripraseodimunca-aluminum forms crystals of the orthorhombic system , space group I mmm , cell parameters a = 0.4446 nm , b = 1.2949 nm , c = 1.0005 nm , Z = 2 , the structure of the trilantane-undeca aluminum type Al 11 La 3 [1] [2 ] [3] .
At a temperature of 965 ° C, a transition to the tetragonal system , the space group I 4 / mmm , cell parameters a = 0.436 nm , c = 1.0010 nm , Z = 2/3 , the structure of the barium tetraaluminium type Al 4 Ba occurs [1] .
The compound is formed by the peritectic reaction at a temperature of 1240 ° C [1] .
Notes
- ↑ 1 2 3 4 State diagrams of double metallic systems / Ed. N. P. Lyakishev. - M .: Mashinostroenie, 1996. - T. 1. - 992 p. - ISBN 5-217-02688-X .
- ↑ B. Predel. Al-Pr (Aluminum-Praseodymium) // Landolt-Börnstein - Group IV Physical Chemistry. - 1991. - T. 5a . - p . 1-5 . - DOI : 10.1007 / 10000866_132 .
- ↑ KA Gschneidner, FW Calderwood. The Al-Pr system (Aluminum-Praseodymium) // Bulletin of Alloy Phase Diagrams. - 1989. - Vol. 10 , No. 1 . - p . 31-33 . - DOI : 10.1007 / BF02882169 .