![]() | |
Names | |
---|---|
Preferred IUPAC name Cyclopenta-2,4-dien-1-one | |
Identifiers | |
3D model (JSmol) | |
ChemSpider | |
PubChem CID | |
CompTox Dashboard (EPA) | |
| |
| |
Properties | |
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). |
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]
Cyclopentadienone can be generated by the photolysis or pyrolysis of various substances (e.g. 1,2-benzoquinone [4] ), and then isolated in an argon matrix at 10 K (−263 °C). It dimerizes readily upon thawing the matrix at 38 K (−235 °C). [5] [6]