A Well‐Defined Anionic Dicopper(I) Monohydride Complex that Reacts like a Cluster**

Low-nuclearity copper hydrides are rare and few well-defined dicopper have been reported. Herein, we describe the first example of a structurally characterized anionic hydride complex. This complex does not display typical reactivity associated with low-nuclearity hydrides, such as alcoholysis or insertion reactions. Instead, its stoichiometric catalytic is akin to that clusters. The distinct ascribed robust dinuclear core bound tightly within dinucleating ligand scaffold.