A half-sandwich acetatoiridium(III) complex can activate two geminal C(sp3)-H bonds of 2-methylaniline derivatives to produce a new dinuclear azametallacycle, (η5-1,2,3,4,5-pentamethylcyclopentadienyl)[η5-2-(η5-1,2,3,4,5-pentamethylcyclopentadienyl)iridaindolyl]iridium. The C–N chelate iridium displaying an amido-carbene structure favors formation of the saturated 34 electron complex via π-coordination to the other Cp*Ir fragment.