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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., & 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 in English, 38(13-14), 1856-2070. doi:10.1002/(SICI)1521-3773(19990712)38:13/14<2036:AID-ANIE2036>3.0.CO;2-Q.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0024-6595-F Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0024-6596-D
Genre: Journal Article

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 Creators:
Rovai, R.1, Author           
Lehmann, C.2, Author           
Bradley, J. 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: 1999-07-121999-07-12
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/(SICI)1521-3773(19990712)38:13/14<2036::AID-ANIE2036>3.0.CO;2-Q
 Degree: -

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Title: Angewandte Chemie, International Edition in English
  Other : Angewandte Chemie International Edition in English
  Other : Angew. Chem., Int. Ed. Engl.
  Other : Angew. Chem. Int. Ed. Engl.
  Abbreviation : Angew. Chem. Int. Ed. Engl.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH Verlag GmbH & Co. KGaA
Pages: - Volume / Issue: 38 (13-14) Sequence Number: - Start / End Page: 1856 - 2070 Identifier: CoNE: https://pure.mpg.de/cone/journals/resource/0570-0833