N,P‐Heterocyclic Germylene/B(C₆F₅)₃ Adducts: A Lewis Pair with Multi‐reactive Sites

Abstract

An N,P-heterocyclic germylene/B(C₆ F₅ )₃ Lewis adduct 2 presenting multi-reactive sites (P/B Lewis pair, germylene, Ge=P π-bond) is reported. In contrast to classical frustrated Lewis pairs or divalent Group 14 element species, 2 is able to activate two small molecules simultaneously. Of particular interest, 2 reacts with silanes leading to the formation of original cationic germylenes 3, and can be used as a metal-free catalyst for selective CO₂ -hydrosilylation to H₂ C(OSiEt₃ )₂ .