Cationic half-sandwich C–N chelating Ir and Rh complexes [Cp*M(NCCH3){κ2(N,C)-NH2CR2-2-C6H4}]+SbF6– (1a, M = Ir, R = CH3; 1b, M = Ir, R = C6H5; 2a, M = Rh, R = CH3; 2b, M = Rh, R = C6H5) are synthesized by AgSbF6-mediated halide abstraction from neutral azametallacycles derived from tritylamine or cumylamine and are fully characterized by NMR spectroscopy and X-ray crystallography. The treatment of the cationic complex 1b with H2 gas under ambient conditions in the presence of triethylamine in THF-d8 quantitatively yielded hydrido(amine) complex [Cp*Ir(H){κ2(N,C)-NH2C(C6H5)2-2-C6H4}] (4). The C–N chelating Ir complex shows a higher catalytic activity than an N–N chelating complex, [Cp*Ir(NCCH3)(Tscydn)]+SbF6– (3; Tscydn = N-(p-toluenesulfonyl)-1,2-cyclohexanediamime), that has been previously used for the asymmetric hydrogenation of acyclic imines. For example, the cationic Ir complex 1a promoted the hydrogenation of N-(1-phenylethylidene)benzylamine under 30 atm at 30 °C in the presence of excess AgSbF6 ...