Preparation of carbosilane dendrimers and their characterization using 1H/13C/29Si triple resonance 3D NMR methods

被引：34

作者：

Chai, MH ^{[1
]}

Pi, ZJ ^{[1
]}

Tessier, C ^{[1
]}

Rinaldi, PL ^{[1
]}

机构：

[1] Univ Akron, Dept Chem, Knight Chem Lab, Akron, OH 44325 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1999年 / 121卷 / 02期

关键词：

D O I：

10.1021/ja9831812

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper we show the utility of H-1/C-13/Si-29 triple resonance, 3D, and pulse field gradient (PFG) NMR techniques for characterizing organosilicon based polymers. The dendrimers studied are first generation Si(CH2CH2SiHMe2)(4) and second generation Si[CH2CH2SiMe(CH2CH2SiHMe2)(2)](4) polycarbosilanes. The signals from one-bond and two-bond connectivities among H-1 atoms coupled to both C-13 and Si-29 at natural abundance have been selectively detected. The spectral dispersion and the atomic connectivity information present in the 3D NMR spectra provide resonance assignments and a definitive structure proof.

引用

页码：273 / 279

页数：7

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