Trichlorosilylated tetrelides [(Cl Si) E] have been prepared by adding 1 equiv of a soluble Cl salt to (Cl Si) Si (E=Si) or 4 Si Cl /GeCl (E=Ge). To assess their donor qualities, the anions [(Cl Si) E] (E=C, Si, Ge) have been treated with BCl , AlCl , and GaCl . Both BCl and GaCl give 1:1 adducts with the anionic centers. AlCl leads to Cl abstraction from [(Cl Si) E] with formation of (Cl Si) E (E=Si or Ge). (Cl Si) Ge is cleanly converted to the perhydrogenated (H Si) Ge by use of Li[AlH ]. Another case of Cl abstraction was observed for [(Cl Si) Ge⋅GaCl ] , which reacts with GaCl to afford the neutral dimer [(Cl Si) Ge-GaCl ] .
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