No neutral silicon Lewis super acids are known to date. We report on the synthesis of bis(perchlorocatecholato)silane and verify its Lewis super acidity by computation (DLPNO-CCSD(T)) and experiment (fluoride abstraction from SbF ). The exceptional affinity towards donors is further demonstrated by, for example, the characterization of an unprecedented SiO F dianion and applied in the first hydrodefluorination reaction catalyzed by a neutral silicon Lewis acid. Given the strength and convenient access to this new Lewis acid, versatile applications might be foreseen.

Bisher sind noch keine neutralen Silicium-Lewis-Supersäuren bekannt. Wirberichtenhier über die Synthese des Bis(perchlorocatecholato)silans und bestätigen dessen Lewis-Superaziditätd urchB erechnungen (DLPNO-CCSD(T)) und Experimente (Fluoridabstraktion von SbF 6 À