“…The reactivity of the carboryne complex featured the metal−ligand cooperativity where one of the strained electron-rich metal− boron bonds of the BB>Ru fragment interacted with a range of electrophilic substrates, including protonation, halogenation, and insertion of Lewis acidic metal centers (Scheme 1). 60,62,63 In all cases, the strongly bound carbonyl ligands remained coordinated to the metal center.…”