Europium monoselenide
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Other names
Europium selenide, europium(II) selenide, selanylideneeuropium
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Identifiers | |
3D model (
JSmol ) |
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ChemSpider | |
ECHA InfoCard
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100.031.499 |
EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
EuSe | |
Molar mass | 230.92 |
Appearance | black crystals |
Density | 6.45 g/cm3 |
Melting point | 1,213 °C (2,215 °F; 1,486 K) |
Structure | |
cubic, Fm3m | |
Hazards | |
GHS labelling: | |
Danger | |
H301, H331, H373 | |
P260, P261, P301+P310, P304+P340, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Europium monoselenide is a binary inorganic compound of europium and selenium with the chemical formula EuSe.[1] The compound forms black crystals.
Synthesis
- Heating stoichiometric amounts of pure substances in a vacuum ampoule at 800 °C:[2]
- Eu + Se → EuSe
- Heating of europium(II) oxalate with an excess of selenium in a hydrogen current:
- EuC2O4 + Se + H2 → EuSe + H2O + CO2 + CO
Physical properties
Europium monoselenide forms black (or brown) crystals of cubic syngony, spatial group Fm3m, cell parameters a = 0.6185 nm, Z = 4.[3][4]
Ferromagnetic at curie temperature 7 K.
References
- ^ "Europium Selenide". American Elements. Retrieved 3 April 2023.
- ISSN 0863-1786. Retrieved 3 April 2023.
- ISSN 0021-8979. Retrieved 3 April 2023.
- S2CID 123290263. Retrieved 3 April 2023.