Divergent Reactivity of an Isolable Nickelacyclobutane

Nickelacyclobutanes are mostly invoked as reactive intermediates in the reaction of nickel carbenes and olefins to yield cyclopropanes. Nevertheless, early work suggested that other decomposition routes such β-hydride elimination even metathesis could be accessible. Herein, we report isolation characterization a stable pentacoordinated nickelacyclobutane incorporated pincer complex. The coordination different coligands determines its selective along cyclopropanation, or apparent pathways. DFT calculations shed light on mechanism these