Half‐Sandwich η 5 ‐Indenyl‐ and η 6 ‐Areneruthenium(II) Complexes Bearing the Chiral Ligand (4 S )‐2‐[( S p )‐2‐(Diphenylphosphanyl)ferrocenyl]‐4‐(methylethyl)oxazoline (FcPN)

Chiral indenylruthenium(II) [Ru(η 5 ‐C 9 H 7 ){κ 2 ( P , N )‐FcPN}(PPh 3 )][PF 6 ] ( 1 ), [Ru(η 5 ‐C 9 H 7 )Cl{κ 2 ( P , N )‐FcPN}] ( 2 ) and areneruthenium(II) [RuX(η 6 ‐arene){κ 2 ( P , N )‐FcPN}][PF 6 ] [η 6 ‐arene = p ‐cymene, X = Cl ( 6a ), H ( 7 ), N 3 ( 8 ); η 6 ‐arene = 1,2,3,4‐tetramethylbenzene, X = Cl ( 6b )] complexes containing the chiral ligand (4 S )‐2‐[( S P )‐2‐(diphenylphosphanyl)ferrocenyl]‐4‐(methylethyl)oxazoline (FcPN) have been synthesised diastereoselectively. Reaction of 2 with terminal alkynes allows the synthesis of alkynyl [Ru(η 5 ‐C 9 H 7 )(C≡CR){κ 2 ( P , N )‐FcPN}] [R = Ph ( 3a ), p ‐CH 3 C 6 H 4 ( 3b )], allenylidene [Ru(η 5 ‐C 9 H 7 ){κ 2 ( P , N )‐FcPN}(=C=C=CPh 2 )][PF 6 ] ( 4 ) and Fischer‐type carbene [Ru(η 5 ‐C 9 H 7 ){κ 2 ( P , N )‐FcPN}{=C(OMe)CH=CHPh}][PF 6 ] ( 5 ) complexes. The structures of complexes 2 , 3a and 6a have been determined by X‐ray diffraction methods. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)