Square-Planar Iridium(II) and Iridiem(III) Amido Complexes Stabilized by a PNP Pincer Ligand

摘要

Coordination compounds of the precious metals are of enormous importance in homogeneous catalysis. Generally, their electronic structures favor closed-shell states, thus explaining the typical preference of two-electron (oxidative addition/reductive elimination) over one-electron redox reac-tions. However, the importance of the latter was more recently emphasized for platinum metal complexes, for example in radical H2, C-H, and C-C activation reactions or catalytic oxidations. Nevertheless, fully characterized metalloradical complexes of these metals remain scarce.