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Robust refocusing of 13C magnetization in multidimensional NMR experiments by adiabatic fast passage pulses.

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Zweckstetter,  M.
Research Group of Protein Structure Determination using NMR, MPI for biophysical chemistry, Max Planck Society;

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Citation

Zweckstetter, M., & Holak, T. A. (1999). Robust refocusing of 13C magnetization in multidimensional NMR experiments by adiabatic fast passage pulses. Journal of Biomolecular NMR, 15(4), 331-334. doi:10.1023/A:1008360013567.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002B-A56D-A
Abstract
We show that adiabatic fast passage (AFP) pulses are robust refocusing elements of transverse 13C magnetization in multidimensional NMR experiments. A pair of identical AFP pulses can refocus selected parts or a complete 13 C chemical shift range in 13C spectra. In the constant time 13C-1H HSQC, replacement of attenuated rectangular pulses by selective AFP pulses results in a sensitivity enhancement of up to a factor of 1.8. In the 3D CBCA(CO)NH the signal-to-noise ratio is increased by a factor of up to 1.6.