Praseodymium monoselenide
Chemical compound
From Wikipedia, the free encyclopedia
Praseodymium monoselenide is a compound with the chemical formula PrSe. It forms crystals.
| Identifiers | |
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3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.031.689 |
| EC Number |
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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).
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Preparation
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
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]