Breaking Carbon–Chlorine Bonds with the Unconventional Lewis Acid Dodecachlorocyclohexasilane

c-Si<sub>6</sub>Cl<sub>12</sub> functions as a Lewis acid strong enough to abstract chloride ions from 2 mol of triphenylchloromethane to form the salt [Tr<sup>+</sup>]<sub>2</sub>[Si<sub>6</sub>Cl<sub>14</sub><sup>2–</sup>]. This is the first example of a Lewis acid “hole” breaking a carbon–halogen bond.