Cyclopentadienone

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.

[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).

[5][6] MgCpBr (TiCp2Cl)2 TiCpCl3 TiCp2S5 TiCp2(CO)2 TiCp2Me2 VCpCh VCp2Cl2 VCp(CO)4 (CrCp(CO)3)2 Fe(η5-C5H4Li)2 ((C5H5)Fe(C5H4))2 (C5H4-C5H4)2Fe2 FeCp2PF6 FeCp(CO)2I CoCp(CO)2 NiCpNO ZrCp2ClH MoCp2Cl2 (MoCp(CO)3)2 RuCp(PPh3)2Cl RuCp(MeCN)3PF6 This article about a ketone is a stub.

The Knölker complex , derived from a substituted cyclopentadienone, is a catalyst for transfer hydrogenation . [ 3 ]