Heteroaromatic nitrogen ligand studies with the (.eta.5-pentamethylcyclopentadienyl)ruthenium cation: .eta.1(N) and .eta.6(.pi.) bonding modes and factors that influence a nitrogen to .pi. rearrangement

The reactions of the (η 5 -pentamethylcyclopentadienyl) ruthenium tris(acetonitrile) cationic complex [Cp* Ru(CH 3 CN) 3 ] (OTf) with pyridine (1), 2-methylpyridine (2), and quinoline (3) were studied to ascertain bonding modes as a function of hetereoaromatic nitrogen ligand structure