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  Non-Oxide Sol–Gel Chemistry: Preparation from Tris(dialkylamino)silazanes of a Carbon-Free, Porous, Silicon Diimide Gel

Rovai, R., Lehmann, C. W., & Bradley, J. S. (1999). Non-Oxide Sol–Gel Chemistry: Preparation from Tris(dialkylamino)silazanes of a Carbon-Free, Porous, Silicon Diimide Gel. Angewandte Chemie International Edition, 38(13-14), 2036-2038. doi:10.1002/(SICI)1521-3773(19990712)38:13/14<2036:AID-ANIE2036>3.0.CO;2-Q.

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 Creators:
Rovai, Riccardo1, Author              
Lehmann, Christian W.2, Author              
Bradley, John S.3, Author
Affiliations:
1Research Group Bradley, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445599              
2Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445625              
3Department of Chemistry University of Hull Cottingham Road, Hull, HU6 7RX (UK), ou_persistent22              

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Free keywords: Ammonolysis; Ceramics; Nitrides; Sol–gel processes
 Abstract: The acid-catalyzed ammonolysis of the hitherto unknown compound tris(dimethylamino)silylamine (1), which is prepared from SiCl4 in high yield and purity, results in the preparation of a silicon diimide gel. The probable first step in this process is the acid-catalyzed self-condensation of 1 to the cyclic trimer [{(CH3)2N}2SiNH]3. This ammonolysis under mild conditions in THF provides a semirigid translucent gel. On drying under mild conditions in an ammonia atmosphere this non-oxide gel yields a high surface area silicon diimide xerogel that is the first example of a porous non-oxide silicate gel.

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Language(s): eng - English
 Dates: 1999-07-12
 Publication Status: Published in print
 Pages: 3
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Degree: -

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Title: Angewandte Chemie International Edition
  Abbreviation : Angew. Chem., Int. Ed.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 38 (13-14) Sequence Number: - Start / End Page: 2036 - 2038 Identifier: ISSN: 1433-7851
CoNE: https://pure.mpg.de/cone/journals/resource/1433-7851