Chapter 42. Isomeric Cyclosilazanes and their Application as Precursors for Silicon-Based Ceramics

  1. Prof. Dr. Norbert Auner3 and
  2. Prof. Dr. Johann Weis4
  1. Nina Helmold1,
  2. Verena Liebau1,
  3. Uwe Klingebiel1 and
  4. Stefan Schmatz2

Published Online: 5 MAY 2008

DOI: 10.1002/9783527619924.ch42

Organosilicon Chemistry V: From Molecules to Materials

Organosilicon Chemistry V: From Molecules to Materials

How to Cite

Helmold, N., Liebau, V., Klingebiel, U. and Schmatz, S. (2003) Isomeric Cyclosilazanes and their Application as Precursors for Silicon-Based Ceramics, in Organosilicon Chemistry V: From Molecules to Materials (eds N. Auner and J. Weis), Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527619924.ch42

Editor Information

  1. 3

    Department of Inorganic Chemistry, University of Frankfurt, Marie-Curie-Straße 11, 60439 Frankfurt am Main, Germany

  2. 4

    Consortium of Electrochemical Industry GmbH, Zielstattstraße 20, 81379 Munich, Germany

Author Information

  1. 1

    Institut für Anorganische Chemie, Georg-August-Universität Göttingen Tammannstr. 4, D-37077 Göttingen, Germany

  2. 2

    Institut für Physikalische Chemie, Georg-August-Universität Göttingen Tammannstr. 6, D-37077 Göttingen, Germany

Publication History

  1. Published Online: 5 MAY 2008
  2. Published Print: 26 SEP 2003

ISBN Information

Print ISBN: 9783527306701

Online ISBN: 9783527619924

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Keywords:

  • cyclosilazanes;
  • isomerization;
  • quantum chemical calculations

Summary

Lithiated octamethylcyclotetrasilazane (OMCTS) and hexamethylcyclotrisilazane (HMCTS) react with pyrazoles, fluorosilanes and fluoroboranes in different ways. Ring contraction with formation of the isomeric six-membered or four-membered ring occurs. Quantum Chemical Calculations improve the understanding of the isomerization mechanism. Cyclosilazanes have been intensively studied with regard to their application for ceramics in the Si-C-N and Si-B-C-N systems.