Tridentate Bis‐Pyridine Nitrenium Ligands and Their Coordination Properties

π‐acidic ligands play a significant role in coordination chemistry and catalysis. A unique example of π‐acidic ligands is the N‐heterocyclic nitrenium cation, which is an isoelectronic and isostructural analog of the widely utilized N‐heterocyclic carbene. Herein, the first example of a tridentate nitrenium ligand with pyridine arms as substituents is presented, demonstrating its pincer‐type coordination with both neutral and cationic metal centers. The study includes the preparation and characterization of nitrenium‐based Rh(I), Rh(III), Pd(II), and, for the first time, nitrenium–Cu complexes.