Wikipedia
Praseodymium monoselenide
Praseodymium monoselenide is a compound with the chemical formula PrSe. It forms crystals.
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3D model (JSmol) |
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| ChemSpider |
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| ECHA InfoCard | 100.031.689 |
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CompTox Dashboard (EPA) |
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| Properties | |
| PrSe | |
| Molar mass | 219.87 |
| Density | 6.9 g/cm3 |
| Melting point | 2,100 °C (3,810 °F; 2,370 K) |
| Related compounds | |
Other anions | PrS PrTe |
Other cations | CeSe NdSe |
Related compounds | Pr2Se3 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Preparation edit
Praseodymium monoselenide can be prepared by directly reacting praseodymium and selenium at 2100 °C:[1]
- Pr + Se → PrSe
The temperature at which selenium and praseodymium start to react when they come into contact is 620 K.[2]
Properties edit
Praseodymium monoselenide forms cubic crystals, space group Fm3m, unit cell parameters a = 0.5741 nm, Z = 4, and a structure similar to that of sodium chloride.[3][4]
The compound melts congruently[clarification needed] at 2100 °C.[4]
References edit
- ^ Sergeeva, K. P. (2015-07-28). "The territorial structures in the settlement pattern and urbanization". Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. (2): 122. doi:10.15356/0373-2444-2015-2-122. ISSN 0373-2444.
- ^ Andreev, O. V.; Kharitontsev, V. B.; Elyshev, A. V. (2013-08-01). "Compositions of phases in the interaction of rare-earth metals with selenium". Russian Journal of Inorganic Chemistry. 58 (8): 910–914. doi:10.1134/S0036023613080020. ISSN 1531-8613.
- ^ Predel, B., "Se-Tm (Selenium-Thulium)", Pu-Re – Zn-Zr, Berlin/Heidelberg: Springer-Verlag, pp. 1–2, doi:10.1007/10551312_2721, ISBN 3-540-61742-6, retrieved 2024-01-22
- ^ a b Diagrammy sostojanija dvojnych metalličeskich sistem: spravočnik v trech tomach. 3,2. Moskva: Mašinostroenie. 2001. ISBN 978-5-217-02932-7.