Two-dimensional HSQC NMR spectra obtained using a self-compensating double pulsed field gradient and processed using the filter diagonalization method
✍ Scribed by Vladimir A. Mandelshtam; Haitao Hu; A. J. Shaka
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 326 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
New data acquisition and data processing strategies are combined to give enhanced 2D HSQC spectra. Complete carbon-13 assignments can be obtained using only two proton spectra in some cases. A composite pulsed Ðeld gradient is employed which appears e †ectively instantaneous, as far as spin evolution is concerned, and which o †ers superb recovery and does not perturb the Ðeld/frequency lock. The spectra are analyzed by a new linear algebraic method called the Ðlter diagonalization method (FDM). FDM can be used to extract 2D spectral parameters directly from 2D time signals without any Fourier transformation and can speed up the spectral throughput.