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Molecular properties of some new cyclic ethynylsilanes

Molekulare Eigenschaften einiger neuer cyclischer Ethinylsilane

  • Anorganische Und Physikalische Chemie
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Summary

The question about conjugation between -C≡C- and -SiMe 2- groups in [-C≡C-SiMe 2-] n withn=4 and 5 has been investigated by AM 1 calculations which show strong conjugation. In the structure determination (AM 1, X-ray) and in the Raman spectra no significant differences to normal values are observed. The NMR Si-C≡coupling constant and UV spectra are presented.

Zusammenfassung

Die Frage der Konjugation zwischen -C≡C- und -SiMe 2- Gruppen in [-C≡C-SiMe 2-] n mitn=4 und 5 wurde mittels AM 1-Rechnungen untersucht, wobei starke Konjugation resultierte. Bei Strukturuntersuchungen (AM 1 und Röntgenbeugung) und in den Raman-Spektren wurden keine signifikanten Unterschiede zu normalen Werten beobachtet. Die NMR Si-C≡Kopplungskonstante und UV-Spektren werden angegeben.

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Authors and Affiliations

  1. Institute of Inorganic Chemistry, Technical University Graz, A-8010, Graz, Austria

    Alfred Baumegger & Edwin Hengge

  2. Institute of Inorganic Chemistry, Technical University Munich, D-W-8046, Garching, Federal Republic of Germany

    Siegfried Gamper & Eberhard Hardtweck

  3. Institute of Theoretical Chemistry, University Graz, A-8010, Graz, Austria

    Rudolf Janoschek

Authors
  1. Alfred Baumegger
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  2. Edwin Hengge
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  3. Siegfried Gamper
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  4. Eberhard Hardtweck
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  5. Rudolf Janoschek
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Additional information

This paper is dedicated to Professor Dr. mult. Victor Gutmann on the occasion of his 70th birthday with warmest personal wishes

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Baumegger, A., Hengge, E., Gamper, S. et al. Molecular properties of some new cyclic ethynylsilanes. Monatsh Chem 122, 661–671 (1991). https://doi.org/10.1007/BF00811465

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  • DOI: https://doi.org/10.1007/BF00811465

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