Names | |
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Other names
Phosphanylidyneeuropium, Europium phosphide
[1]
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Identifiers | |
3D model (
JSmol)
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ChemSpider | |
ECHA InfoCard | 100.044.780 |
EC Number |
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PubChem
CID
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CompTox Dashboard (
EPA)
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Properties | |
EuP | |
Molar mass | 182.94 |
Appearance | Dark crystals |
Density | g/cm3 |
Melting point | 2,200 °C (3,990 °F; 2,470 K) |
Insoluble | |
Structure | |
Cubic | |
Related compounds | |
Other
anions
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Europium nitride Europium arsenide |
Other
cations
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Samarium phosphide Gadolinium phosphide |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Europium phosphide is an inorganic compound of europium and phosphorus with the chemical formula EuP. [2] [3] [4] Other phosphides are also known. [5]
Heating powdered europium and red phosphorus in an inert atmosphere or vacuum:[ citation needed]
Passing phosphine through a solution of europium in liquid ammonia: [6]
Eu(PH2)2 is formed, which then decomposes to europium(III) phosphide and phosphine: [6] [7]
Europium(III) phosphide forms dark crystals which are stable in air and do not dissolve in water. Like sodium chloride, it crystallizes cubically in the space group Fm3m with cell parameter a = 575.5 nm with four formula units per unit cell. [8] Europium(III) phosphide tends to form europium(II) oxide (EuO) in air, [9] and pure EuP shows Van Vleck paramagnetism. The vapor pressure of EuP is 133-266.6 Pa at 1273 K. [10]
Europium(III) phosphide actively reacts with nitric acid.[ citation needed]
The compound is a semiconductor used in high power, high frequency applications and in laser diodes. [2]
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