Cerocene is a metal organic compound of cerium with the chemical formula Ce(C5H5)3.

It, and the other lanthanocenes, is different from cyclopentadiene complexes of general transition metals and is considered to be ionically bonded.

[1] Cerocene can be obtained by reacting anhydrous cerium chloride and sodium cyclopentadienide in a tetrahydrofuran medium:[1] Cerocene decomposes when exposed to water to produce cerium(III) hydroxide and cyclopentadiene.

There are literature reports on the synthesis[2] and properties[3] of the tetravalent cerium compound Ce(C5H5)4, but it has been pointed out that the synthesis method is not credible.

[4][5] 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