Chapter 7. Fascinating Silicon-Chemistry —Retrospection and Perspectivesd̊

  1. Prof. Norbert Auner2 and
  2. Prof. Johann Weis3
  1. Hans Bock

Published Online: 28 APR 2008

DOI: 10.1002/9783527619917.ch7

Organosilicon Chemistry IV: From Molecules to Materials

Organosilicon Chemistry IV: From Molecules to Materials

How to Cite

Bock, H. (2000) Fascinating Silicon-Chemistry —Retrospection and Perspectivesd̊, in Organosilicon Chemistry IV: From Molecules to Materials (eds N. Auner and J. Weis), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527619917.ch7

Editor Information

  1. 2

    Inst. für Anorganische Chemie, der Universität Frankfurt, Marie-Curie-Strasse 11, D-60439 Frankfurt am Main, Germany, Phone: 0 69/7 98-29180, -29591, Fax: 069/798-29188

  2. 3

    Wacker-Chemie GmbH, Geschäftsbereich S, Werk Burghausen, Johannes-Hess-Strasse 24, D-84489 Burghausen, Germany

Author Information

  1. Institut für Anorganische Chemie Johann Wolfgang Goethe-Universität Marie-Curie-Str. 11, D-60439 Frankfürt am Main, Germany Tel: Int. code + (69)798 29181—Fax: Int. code + (69)798 29188

Publication History

  1. Published Online: 28 APR 2008
  2. Published Print: 17 JAN 2000

ISBN Information

Print ISBN: 9783527298549

Online ISBN: 9783527619917



  • molecular states;
  • photoelectron spectroscopy;
  • EPR spectroscopy;
  • radical anions and cations;
  • sterically overcrowded molecules;
  • DFT calculations;
  • long-range interactions


From silicon and its compounds it has been possible to design new materials, which, from computers to space travel, have helped to shape the technology of our 20th century. Conversely, this technology has stimulated the tremendous development of silicon chemistry together with adequate methods to measure and to calculate the properties of silicon compounds. Within the last 30 years the Frankfurt Group has participated with about 25 of its 100 co-workers and has succeeded, for instance, in contributing:

  • proof of positive charge delocalization in polysilanes (Kipping Award, American Chemical Society 1975)

  • determination of the tremendous donor effect by β-trialkylsilyl substituents (Chemistry Award, Academy of Sciences, Göttingen 1969)

  • oxidation of numerous organosilicon compounds of low first ionization energy to their radical cations using the AlC13/H2CCl2 single-electron transfer system

  • generation of short-lived intermediates in the gas phase such as silylenes, silaethene, silabenzene, and even silaisonitrile R-Nδ+ [TRIPLE BOND]Siδ-, a molecule with a singly coordinate, triply bonded silicon center (Klemm Prize, German Chemical Society 1987)

  • structural studies of van der Waals interactions in sterically overcrowded organosilicon molecules and density functional theory calculations on long-range Coulomb attractions in seven- and eight-coordinate silicon heterocyclic aggregates (Heyrovsky Medal, Academy of Science, Prague 1996).

Selected experimental results are presented and rationalized within a molecular state approach.