Qualitative Applications of the NMR Spectra of Alkylpyridines: Part II. Chemical Shifts of the Protons of the Alkyl Substituents
โ Scribed by McDonald, F. R.; Decora, A. W.; Cook, G. L.
- Book ID
- 115358054
- Publisher
- Society for Applied Spectroscopy
- Year
- 1968
- Tongue
- English
- Weight
- 485 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0003-7028
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๐ SIMILAR VOLUMES
Reproducible proton chemical shifts in the porphyrin series are obtained when the spectrum is measured in chloroform using the zinc (11) complex of the porphyrin in the presence of an excess of pyrrolidine. This method is specifically demonstrated for the case of 2,4-dicyanodeuteroporphyrin-M dimeth
Becently mrrh attention has been paid to the bond or rubstituent diamagnetic anisotropy effect on proton nmr chemical shift(2). In estimating the long-ranBe diamagwtic anisotropy effect, McConnell88 equation( ), bani = CAx(1 -3cor20)3/ 3x3 , has frequently been used and scassttis a satisfactory agre