Platinum divismutide is a binary inorganic compound of platinum and bismuth with the formula PtBi 2 , crystals.
| Platinum divismutide | |
|---|---|
| Are common | |
| Systematic name | Platinum divismutide |
| Traditional names | Bismuth Platinum |
| Chem. formula | Ptbi 2 |
| Rat formula | Bi 2 Pt |
| Physical properties | |
| condition | crystals |
| Molar mass | 613.04 g / mol |
| Density | 13.6 g / cm³ |
| Thermal properties | |
| T. decomp. | 660 [1] [2] ° C |
| Classification | |
| Reg. CAS number | 12233-35-1 |
Content
Getting
- Fusion of stoichiometric amounts of pure substances:
Physical Properties
Platinum divismutide forms crystals of several modifications:
- γ-PtBi 2 , cubic syngony , space group P a3 , cell parameters a = 0.6683 nm, Z = 4, structure like FeS 2 iron disulfide , exists at temperatures below 330 ° C [3] (according to updated data, cell parameters a = 0.67022 nm [4] );
- h 1 -PtBi 2 , trigonal syngonium, space group P 31m , cell parameters a = 0.65730 nm, c = 0.61665 nm, Z = 8, structure like cadmium diiodide CdI 2 , exists in the temperature range 380 ÷ 420 ° С [5] ;
- h 2 -PtBi 2 , rhombic syngony , space group P bca , cell parameters a = 0.6732 nm, b = 0.6794 nm, c = 1.3346 nm, Z = 8, exists in the temperature range 420 ÷ 640 ° С ;
- h 3 -PtBi 2 , hexagonal syngony , cell parameters a = 0.41 nm, c = 5.5 nm, exists at temperatures above 640 ° C.
The compound is formed by a peritectic reaction at a temperature of 660 ° C [2] .
At a temperature of 0.15 K, it transforms into a superconducting state [6] .
Chemical Properties
- Decomposes on heating:
Application
- The catalyst in organic synthesis [7] .
Notes
- ↑ H Okamoto. The Bi-Pt (Bismuth-Platinum) system // Journal of Phase Equilibria. - 1991. - T. 12 , No. 2 . - S. 207-210 . - DOI : 10.1007 / BF02645718 .
- ↑ 1 2 State Diagrams of Double Metal Systems / Ed. N.P. Lyakisheva. - M .: Mechanical Engineering, 1996. - T. 1. - 992 p. - ISBN 5-217-02688-X .
- ↑ Chemist's Handbook / Editorial: Nikolsky B.P. et al. - 2nd ed., rev. - M.-L.: Chemistry, 1966. - T. 1. - 1072 p.
- ↑ Furuseth Sigrid, Selte Kari, Kjekshus Arne. Redetermined Crystal Structures of PdAs 2 , PdSb 2 , PtP 2 , PtAs 2 , PtSb 2 , α-PtBi 2 , and AuSb 2 . // Acta Chemica Scandinavica. - 1965. - T. 19 . - S. 735-741 . - DOI : 10.3891 / acta.chem.scand.19-0735 .
- ↑ Martin Kaiser, Alexey I. Baranov, Michael Ruck. Bi 2 Pt (hP9) by Low-Temperature Reduction of Bi 13 Pt 3 I 7 : Reinvestigation of the Crystal Structure and Chemical Bonding Analysis // Zeitschrift für anorganische und allgemeine Chemie. - 2014.- T. 640 , No. 14 . - S. 2742–2746 . - DOI : 10.1002 / zaac.201400331 .
- ↑ JD Smith. The Chemistry of Arsenic, Antimony and Bismuth: Pergamon Texts in Inorganic Chemistry . - Pergamon Press, 1973. - T. 2. - ISBN 0-08-018778-1 .
- ↑ Dingguo Xia, Ge Chen, Zhenyao Wang, Jiujun Zhang, Shiqiang (Rob) Hui, Dave Ghosh, Haijiang Wang. Synthesis of Ordered Intermetallic PtBi 2 Nanoparticles for Methanol-Tolerant Catalyst in Oxygen Electroreduction // Chem. Mater .. - 2006. - T. 18 , No. 24 . - S. 5746–5749 . - DOI : 10.1021 / cm060430 + .