Synthesis\nof Cyclic (Alkyl)(amino)carbene-Stabilized\nCopper–Iron Heterobimetallic Complexes and Their Application\nin Pyridine Hydroboration

In this report, we synthesized heterobimetallic complexes\nsupported\nby cyclic and bicyclic (alkyl)(amino)carbenes (CAAC and <sup><i>Et</i></sup>BICAAC) [(<sup><i>Me2</i></sup>CAAC)CuFe(η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)(CO)<sub>2</sub>](<b>1</b>) and [(<sup><i>Et</i></sup>BICAAC)CuFe(η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)(CO)<sub>2</sub>] (<b>2</b>), respectively,\nfeaturing an iron–copper bond. Complex <b>1</b> demonstrates\ncatalytic activity for selective 1,4-hydroboration reactions of pyridine\nderivatives. Detailed computational studies provide additional insights\ninto the electronic structure of complexes <b>1</b> and <b>2</b> and elucidate the catalytic pathway.