Fashionably Late: Synthesis and Characterization of Transition-Metal–Fluoroborylene Complexes


  • H.B. thanks the Deutsche Forschungsgemeinschaft (DFG) for continued financial support. R.D.D. is grateful to the DFG for an independent research grant.


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B and F become BFFs: The last of the neutral first-row main group diatomics, BF, has conspicuously eluded synthetic chemists and their attempts to stabilize it by transition metals. After decades of near misses, two contrasting families of fluoroborylene transition metal complexes have been definitively synthesized by the research groups of Aldridge and Andrews.