Potassium phosphide

Chemical compound From Wikipedia, the free encyclopedia

Potassium phosphide is an inorganic semiconductor compound with the formula K3P. It appears as a green crystalline solid or powder.[2] It reacts violently with water (even on contact with air) and is toxic via ingestion, inhalation and skin absorption.[3] It has a hexagonal structure.[1]

Quick facts Names, Identifiers ...
Potassium phosphide
Crystal structure of potassium phosphide (K3P)
Names
Other names
  • Tripotassium;phosphanide
  • Tripotassium;phosphorus(3-)
  • Tripotassium phosphide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.040.004 Edit this at Wikidata
EC Number
  • 244-021-5
UNII
  • InChI=1S/3K.P/q3*+1;-3
    Key: YCIITCDBMPCIPR-UHFFFAOYSA-N
  • [P-3].[K+].[K+].[K+]
Properties
K3P
Molar mass 148.269 g mol−1
Appearance Green crystalline solid or powder
Thermochemistry[1]
49.8 J mol−1 K−1
−1.77 kJ mol−1
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

Potassium phosphide can be synthesised by a reaction under controlled conditions starting from the two elements. Simply fusing potassium and phorsphorus does not yield pure K3P:[4]

12 K + P4 → 4 K3P

Applications

Potassium phosphide is used in high power, high frequency applications and also in laser diodes.[dubious – discuss][2]

References

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