The role of inductive, hyperconjugative and d-orbital effects in organosilicon compounds

T. Veszprémi, J. Nagy

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The inductive hyperconjugative and d-orbital effects of PhSiMe3, PhSiH3, PhSiF3 and of the respective carbon analogues have been investigated. Comparisons of calculated (CNDO/S method) and observed shifts for HOMO and LUMO levels indicate that all three effects have important roles in the organosilicon compounds. The relative importance of the effects depends on the compound; e.g. in PhSiMe3 and PhSiH3 hyperconjugation is the main effect, but in PhSiF3 the effect of the d-orbitals is more important. The bathochromic shift in the UV transition of organosilicon compounds is not evident for the d-orbital effect.

Original languageEnglish
Pages (from-to)41-47
Number of pages7
JournalJournal of Organometallic Chemistry
Issue number1
Publication statusPublished - Oct 11 1983


ASJC Scopus subject areas

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

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