Strontium phosphide

Chemical compound From Wikipedia, the free encyclopedia

Strontium phosphide is an inorganic compound of strontium and phosphorus with the chemical formula Sr
3
P
2
.[1][2] The compound looks like black crystalline material.[citation needed]

Quick Facts Names, Identifiers ...
Strontium phosphide
Names
Other names
Tristrontium diphosphide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.032.422
EC Number
  • 235-678-9
UN number 2013
  • InChI=1S/2P.3Sr/q2*-3;3*+2
    Key: ATAJSUOOOWSVGL-UHFFFAOYSA-N
  • [P-3].[P-3].[Sr+2].[Sr+2].[Sr+2]
Properties
P2Sr3
Molar mass 324.8
Appearance Black crystalline material
Density 2.68 g/cm3
Decomposes in water
Structure
cubic
Related compounds
Other anions
Calcium phosphide
Barium phosphide
Other cations
Strontium nitride
Strontium arsenide
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 strontium phosphate with soot in an arc furnace:

Sr3(PO4)2 + 8 C → Sr3P2 + 8 CO

Reaction of strontium with red phosphorus at high temperature:[citation needed]

6 Sr + P4 → 2 Sr3P2

Physical properties

Strontium phosphide forms black crystals.[citation needed]

Thermally stable, melts at high temperatures.

Dangerous when wet, poison.[3]

Chemical properties

Decomposes with water releasing phosphine:[citation needed]

Sr3P2 + 2 H2O → 3 Sr(OH)2 + 2 PH3

Reacts with acids:

Sr3P2 + 6 HCl → 3 SrCl2 + 2 PH3

Uses

It is a highly reactive substance used as a reagent and in the manufacture of chemically reactive devices.[4]

References

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