## Abstract ^29^Si and ^13^C NMR spectra of trimethylphenoxysilane and three bis(trimethylsiloxy)benzenes have been investigated. Crowding in the __ortho__ derivative leads to a small but observable deshielding of both silicon and carbon nuclei of the trimethylsiloxy group. In comparison to analogo
✦ LIBER ✦
Group IVB organometallic compounds of furan: 13C, 29Si and 119Sn n.m.r. Spectra
✍ Scribed by M. Mägi; E. Lippmaa; E. Lukevics; N. P. Erĉak
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 324 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
The ^13^C, ^29^Si and ^119^Sn chemical shifts of 2‐ and 2,5‐substituted organometallic (M=C, Si, Ge, Sn, Pb) derivatives of furan were measured. The most important factors, determining the specific features of the studied spectra, are d‐orbital availability and atomic radius of the central atom M, as well as the relatively higher (as compared with benzene) energies of the π‐electron energy levels of the furan ring.
📜 SIMILAR VOLUMES
Steric effects in 29Si and 13C n.m.r. sp
✍
J. Schraml; V. Chvalovský; H. Jancke; G. Engelhardt
📂
Article
📅
1977
🏛
John Wiley and Sons
🌐
English
⚖ 171 KB