ClCH2Si(H)MeCl (XIII), ClCH2SiM2Cl (XIV), ClMe2SiSiMe2Cl (XV), ClCH2CH2CH2Si(H)MeCl (XVI), ClCH2CH2CH2SiMe2Cl (XVII), ClCH2CH2OSiMe2Cl (XVIII), ClMe2SiCH2SiMe2Cl (XIX), ClMe2SiCH2CH2SiMe2Cl (XX), and ClMe2SiCH2CH2CH2SiMe2Cl (XXI) with K/Na alloy vapours at 0.1–1 Torr and 300–320°C yields products derived from the reactions of short-lived intermediates, such as silyl and silylmethyl radicals, silylenes
8-Dodecamethyl-2,3,5,6,7,8-hexasilabicyclo[2.2.2]octane (1) was synthesized for the first time via three steps in 56% overall yield through triple silylation with three dichlorodimethyldisilane molecules of two trianionic molecules derived from bis(phenylthio)methane. The molecular structure of 1 was shown to be slightly distorted from an ideal bicyclo[2.2.2]octane skeleton by X-ray analysis. The derivatization