P.M.R. spectra and solvent effect of some benzene-chromium-tricarbonyls
β Scribed by A. Mangini; F. Taddei
- Book ID
- 114040773
- Publisher
- Elsevier Science
- Year
- 1968
- Tongue
- English
- Weight
- 492 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0020-1693
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The C-18 and C-19 methyl resonances of 5a-androstane occur at s = 0.69 p.p.m. and 6~0.79 p.p.m. in deuteriochloroform solution (I) and at dzO.71 p.p.m. and 6=0.79 p.p.m. in benzene solution .\* It therefore appears likely that in the absence of polar functional groups, no preferred geometrical relat
## 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