A method of comparing predicted and experimental chemical shifts was used to confirm or refute postulated structures. 1H NMR spectra returned all true positives with a false positive rate of 4%. When an analogous procedure was adopted for 13C NMR spectra, the false positive rate dropped to 1%, where
Towards the automatic analysis of NMR spectra: Part 7. Assignment of 1H by employing both 1H and 1H/13C correlation spectra
β Scribed by Lee Griffiths; Howard H Beeley; Rob Horton
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 156 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.2257
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β¦ Synopsis
Abstract
A reliable method of automatically assigning oneβdimensional proton spectra is described. The method relies on the alignment of the proton spectrum with an associated heteronuclear singleβquantum coherence (HSQC) spectrum, transferring the stoichiometry and couplings to the HSQC. The HSQC spectrum is then assigned using a linear assignment procedure in which a fitness function incorporating ^1^H chemical shifts, ^1^H couplings and ^13^C shifts are employed. The method uniquely employs a sequential procedure in which only correlations of like stoichiometry are assigned at the same time. Copyright Β© 2008 John Wiley & Sons, Ltd.
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