Synthesis and Reactivity of Early−Late Heterobimetallic Hydrides of Group 4 Metals and Iridium Supported by Mono(η⁵-C₅Me₅) Ancillary Ligands: Bimetallic Carbon−Hydrogen Bond Activation

Early−late heterobimetallic (ELHB) hydrido complexes comprising group 4 metals and iridium with mono(pentamethylcyclopentadienyl) (η5-C5Me5 = Cp*) ligands have been synthesized and structurally characterized. The hydrocarbyl complexes {Cp*M(CH2SiMe3)2}(Cp*Ir)(μ-H)3 (3b, M = Zr; 3c, M = Hf) derived from (Cp*MCl2)(Cp*Ir)(μ-H)3 (1b, M = Zr; 1c, M = Hf) displayed the cooperative C−H activation of methoxyarenes and pyridines.