✦ LIBER ✦
Determination of the quadrupolar coupling constant in powdered samples with a two in-phase rf pulse sequence in solid-state NMR
✍ Scribed by Pascal P. Man
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 393 KB
- Volume
- 168
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
We propose a new method for the determination of the quadrupolar coupling constant e'qQ/h of a spin I= 3/2 in powdered samples. It is suitable for characterizing a nucleus with a featureless central transition line shape where it is difkult to extract the value of e*qQ/h from the spectrum. The pulse sequence is a two in-phase rfpulse with a short delay between them. The method consists of measuring the central transition line intensity for increasing lengths of the scmnd pulse and comparing it to calculated data. We illustrate the method with the sodium nuclei 23Na in powdered NaNO,.