Pyrolytic conversion of an Al-Si-N-C precursor prepared via hydrosilylation between [Me(H)SiNH]4 and [HAlN(alIyl)] m[HAlN(ethyl)]n

Yusuke Mori, Yoshiyuki Sugahara*

*この研究の対応する著者

研究成果: Article査読

12 被引用数 (Scopus)

抄録

An iminoalane-silazane polymer (ISP), an Al-Si-N-C precursor, has been synthesized via Ptcatalyzed hydrosilylation between poly(allyl iminoalane-co-ethyl iminoalane) ([HAlN(allyl)]m[HAlN (ethyl)] n, AE-alane) and l,3,5,7-tetrahydro-1,3,5,7-tetramethylcyclotetrasilazane {[Me(H)SiNH] 4, TCS}. The IR and 1H NMR spectra of ISP indicate that the relative amounts of the allyl groups decrease slightly in comparison with those of AE-alane, suggesting that hydrosilylation occurs partially. TG analysis up to 900 °C reveals that the ceramic yield of ISP is 83.1 mass%. It is suggested that the high ceramic yield can be ascribed to cross-linking reactions occurring during pyrolysis. Possible reactions during pyrolysis are hydrosilylation, polymerization of the C=C bonds in the allyl groups and dehydrocoupling among the SiH groups, NH groups and AlH groups in ISP. The pyrolyzed residue at 1700 °C contains crystalline AIN, 2H-SiC, β-SiC and β-Si3N4 and amorphous carbon, as revealed by solid-state nuclear magnetic resonance (NMR) spectroscopy, Raman spectroscopy and X-ray diffraction (XRD) analysis.

本文言語English
ページ(範囲)527-534
ページ数8
ジャーナルApplied Organometallic Chemistry
20
8
DOI
出版ステータスPublished - 2006 8月 1

ASJC Scopus subject areas

  • 化学 (全般)
  • 無機化学

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