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Europium monoselenide

Chemical compound From Wikipedia, the free encyclopedia

Europium monoselenide is a binary inorganic compound of europium and selenium with the chemical formula EuSe.[1] The compound forms black crystals.

Quick facts Names, Identifiers ...
Europium monoselenide
Names
Other names
  • Europium selenide
  • Europium(II) selenide
  • Selanylideneeuropium
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.499 Edit this at Wikidata
EC Number
  • 234-662-9
  • InChI=1S/Eu.Se
    Key: GCSIELJPGDPWNK-UHFFFAOYSA-N
  • [Eu]=[Se]
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:
GHS06: ToxicGHS08: Health hazardGHS09: Environmental hazard
Danger
H301, H331, H373
P260, 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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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.

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