Abstract
AbstractThe complexation of dibromo‐fluorenylborane (FluH‐BBr2) with bulky bis(2,6‐diisopropylphenyl)imidazol‐2‐ylidene (IPr) afforded N‐heterocyclic carbene (NHC) borane adduct 1, which could be subsequently dehydrobrominated by smaller 1,3‐diisopropyl‐4,5‐dimethylimidazol‐2‐ylidene (IPr2Me2) to give the alkylideneborane‐NHC complex 2. Species 2 readily binds with potassium ion to form a potassium alkylideneborane complex 3 through exclusive cation‐π interactions.
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