Iron phosphide

Iron phosphide
Identifiers
CAS Number	26508-33-8 ;
3D model (JSmol)	Interactive image;
PubChem CID	117803;
CompTox Dashboard (EPA)	DTXSID5067215 ;
	InChI InChI=1S/3Fe.H3P/h;;;1H3;
	SMILES [Fe]12[Fe]3[Fe]1P23;
Properties
Chemical formula	FeP
Molar mass	86.819 g·mol−1
Density	6.74 g/cm3
Melting point	1,100 °C (2,010 °F; 1,370 K)
Solubility in water	Insoluble in water
Solubility	soluble in nitric acid, HF, aqua regia ; insoluble in dilute acid, alkalis
Structure
Crystal structure	MnP type (Orthorhombic)
Space group	Pnma (No. 62)
Lattice constant	a = 519.1 pm, b = 309.9 pm, c = 579.2 pm
Related compounds
Other cations	Chromium phosphide; Manganese phosphide; Cobalt phosphide; Tungsten phosphide; Ruthenium phosphide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Iron phosphide is a chemical compound of iron and phosphorus, with a formula of FeP. Its physical appearance is grey, hexagonal needles.

Manufacturing of iron phosphide takes place at elevated temperatures, where the elements combine directly. Iron phosphide reacts with moisture and acids producing phosphine (PH₃), a toxic and pyrophoric gas.

Iron phosphide can be used as a semiconductor. It has use in high power, high frequency applications, such as laser diodes.

Below a Néel temperature of about 119 K, FeP takes on an helimagnetic structure.

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