Cyclopentaphosphine

Cyclopentaphosphine
Names
	IUPAC name pentaphospholane
	Other names Cyclopentaphosphane, pentaphosphole
Identifiers
CAS Number	6798-45-4 ;
3D model (JSmol)	Interactive image;
ChemSpider	546991;
EC Number	235-633-3;
PubChem CID	629880;
CompTox Dashboard (EPA)	DTXSID50924646 ;
	InChI InChI=1S/H5P5/c1-2-4-5-3-1/h1-5H Key: MSVKYECZFNAJJY-UHFFFAOYSA-N;
	SMILES P1PPPP1;
Properties
Chemical formula	H5P5
Molar mass	159.909 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Cyclopentaphosphine is the inorganic compound with the formula (PH)₅. It is prepared by the hydrolysis of cyclo-[PSiMe₃]₄ (Me = methyl). Although only of theoretical interest, (PH)₅ is parent of many related cyclic polyphosphines that are the subject of research.

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