The Protonation of Unactivated Aromatic Hydrocarbons on Osmium(II): Stabilization of Arenium Cations via Unprecedented η2- and η3-Coordination

Winemiller, W.; Kopach, M.; Harman, W. The Protonation of Unactivated Aromatic Hydrocarbons on Osmium(II): Stabilization of Arenium Cations via Unprecedented η2- and η3-Coordination. Journal of the American Chemical Society 1997, 119, 2096.