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Doubling the sensitivity of natural abundance 13C– 13C INADEQUATE with off-resonance compensation

✍ Scribed by Jakob Bunkenborg; Niels Chr. Nielsen; Ole Winneche Sørensen

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
161 KB
Volume
38
Category
Article
ISSN
0749-1581

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✦ Synopsis

The INADEQUATE CR experiment about doubles the sensitivity of the original INADEQUATE experiment but it still suffers from severely deteriorated performance in the presence of large off-resonance effects. In fact, this limitation is exacerbated in INADEQUATE CR because of a more complex pulse sequence. This paper describes the application to INADEQUATE CR of a general scheme developed by Levitt to compensate an entire pulse sequence for pulse imperfections such as off-resonance effects. By incorporation of this scheme into both INADEQUATE and INADEQUATE CR, it is shown that the doubled sensitivity of the latter is retained for camphor (covering about 200 ppm) on a 500 MHz NMR spectrometer.

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