Cyclopentadienone

Cyclopentadienone
Names
	Preferred IUPAC name Cyclopenta-2,4-dien-1-one
Identifiers
CAS Number	13177-38-3;
3D model (JSmol)	Interactive image;
ChemSpider	122931;
PubChem CID	139405;
CompTox Dashboard (EPA)	DTXSID80157203 ;
	InChI InChI=1S/C5H4O/c6-5-3-1-2-4-5/h1-4H Key: FQQOMPOPYZIROF-UHFFFAOYSA-N; InChI=1/C5H4O/c6-5-3-1-2-4-5/h1-4H Key: FQQOMPOPYZIROF-UHFFFAOYAD;
	SMILES C1=CC(=O)C=C1;
Properties
Chemical formula	C5H4O
Molar mass	80.086 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Cyclopentadienone is an organic compound with molecular formula C₅H₄O. The parent cyclopentadienone is rarely encountered, because it rapidly dimerizes.^[1] Many substituted derivatives are known, notably tetraphenylcyclopentadienone. Such compounds are used as ligands in organometallic chemistry.^[2]

See also