Triphosphane

Triphosphane
Names
	Systematic IUPAC name Triphosphane
	Other names Triphosphine
Identifiers
CAS Number	13597-70-1 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:35893 ;
ChemSpider	123032 ;
PubChem CID	139510;
CompTox Dashboard (EPA)	DTXSID80159606 ;
	InChI InChI=1S/H5P3/c1-3-2/h3H,1-2H2 Key: ITHPEWAHFNDNIO-UHFFFAOYSA-N ;
	SMILES PPP;
Properties
Chemical formula	P3H5
Molar mass	97.96099 g·mol−1
Appearance	Colourless gas
Related compounds
Other anions	triazane
Related Binary phosphanes	phosphane; diphosphane
Related compounds	triazene
	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

Triphosphane (IUPAC systematic name) or triphosphine is an inorganic compound having the chemical formula HP(PH₂)₂. It can be generated from diphosphine but is highly unstable at room temperature:

2 P₂H₄ → P₃H₅ + PH₃

Samples have been isolated by gas chromatography. The compound rapidly converts to PH₃ and the cyclophosphine cyclo-P₅H₅.