Student-Determined Values for the Calculation of Chemical Shifts of Methylene Protons in Different Chemical Environments
β Scribed by Breton, Gary W.
- Book ID
- 120483305
- Publisher
- American Chemical Society
- Year
- 2000
- Tongue
- English
- Weight
- 37 KB
- Volume
- 77
- Category
- Article
- ISSN
- 0021-9584
- DOI
- 10.1021/ed077p81
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π SIMILAR VOLUMES
When the protomproton decoupled heteronuclear two-dimensional chemical shift correlation experiment is applied to a molecule containing methylene groups, the spectra show not only the expected signals at the two proton chemical shifts, but also a strong artifact. This artifact appears at the average
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