The photolysis of 1,1-dimethylsilacyclobutane in the gas phase

H. C. Low, P. John

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27 Citations (Scopus)


The gas phase photolysis of 1,1-dimethylsilacyclobutane (DMSCB) has been carried out at wavelenghts 185 nm <λ < 210 nm. The major products of the photodissociation are ethylene and 1,1,3,3-tetramethyl-1,3-disilacyclobutane (TMDSCB). The relative quantum yield Φ(C2H4)/Φ(TMDSCB) = 8.0 ± 0.5 in neat DMSCB is independent of the initial pressure but decreases to a limiting value of ca. 4.5 in the presence of H2. The silicon mass deficit is accounted for, qualitatively, by the production of an involatile polymeric material, of approximate composition -(Me2SiCH2)x-, on photolysis. Under these cnditions, Me2SiCH2 undergoes an oligomerisation reaction in addition to the established homegenoous dimerisation reaction to form TMDSCB.

Original languageEnglish
Pages (from-to)363-369
Number of pages7
JournalJournal of Organometallic Chemistry
Issue number2
Publication statusPublished - 25 Nov 1980

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry


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