Tris(acetonitrile)cyclopentadienylruthenium hexafluorophosphate is an organoruthenium compound with the formula [(C5H5)Ru(NCCH3)3]PF6, abbreviated [CpRu(NCMe)3]PF6.

The compound is a salt consisting of the hexafluorophosphate anion and the cation [CpRu(NCMe)3]+.

[2] The cyclopentadienyl ligand (Cp) is bonded in an η5 manner to the Ru(II) center.

The title complex is synthesized in two steps from the (benzene)ruthenium dichloride dimer.

In the first step, the Cp− group is installed using cyclopentadienylthallium:[1] The second step entails photochemical displacement of the benzene ligand, which is replaced by three equivalents of acetonitrile (MeCN): 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