Recent advances in zinc–zinc bonded complexes: synthesis and reactivity

Since the seminal report on dizincocene [Zn₂Cp*₂] (Cp* = C₅Me₅) by Carmona and coworkers, zinc-zinc bonded complexes have garnered significant research interest owing to their structural versatility and applications in both stoichiometric and catalytic processes. Building on the elegant review in 2012, this feature article briefly reviews decadal advances in the synthesis and reactivity of Zn-Zn bonded species. We specifically highlight methodological innovations in synthesizing these species, including novel reductant systems, ligand substitution strategies, and zinc hydride dehydrocoupling protocols. A survey of their reactivity is subsequently presented, encompassing heterometallic complex formation, small molecule activation, and catalytic transformations. The elucidation of novel reaction modes, expansion of catalytic frontiers, and exploration of non-classical Zn-Zn bonding configurations represent compelling yet formidable challenges in this domain; thus, concerted research efforts are required in the future.