Synthesis, structure, and reactivity of AlMe2(1-Me-CB11F11): An AlMe2+ cation-like species bonded to a superweak anion

► Synthesis of [AlMe2(1-Me-CB11F11)]2. ► X-ray structure of [AlMe2(1-Me-CB11F11)]2, which consists of AlMe2+ cation-like species bonded to two F atoms from two 1-Me-CB11F11− superweak anions. ► [AlMe2(1-Me-CB11F11)]2 undergoes rapid exchange on the NMR timescale with both AlMe3 and [N(n-Bu)4][1-Me-CB11F11].