Reactions of an Amido Hydrido Complex of Osmium, OsH(NHCMe₂CMe₂NH₂)(PPh₃)₂:  HX Addition, HX Transfer, and Ketone H₂ Hydrogenation

The new amido complex OsH(NHCMe 2 CMe 2 NH 2 )(PPh 3 ) 2 ( 2 ) reacts with weak acids HX to give complexes OsHX(tmen)(PPh 3 ) 2 ( 1; X = Cl, 3; X = NCCHCN; and X = H; tmen = NH 2 CMe 2 CMe 2 NH 2 ) and is an active ketone hydrogenation catalyst. HX is completely transferred from Os to Ru in the reactions of the amido complex RuH(NHCMe 2 CMe 2 NH 2 )(PPh 3 ) 2 with complexes 1 and 3 .