A sulfur-33 nuclear quadrupole resonance study of 33 S2 -labeled L-cystine
© 2023 John Wiley & Sons, Ltd.
| Publié dans: | Magnetic resonance in chemistry : MRC. - 1985. - 61(2023), 5 vom: 07. Mai, Seite 296-300 |
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| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2023
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| Accès à la collection: | Magnetic resonance in chemistry : MRC |
| Sujets: | Journal Article EFG tensor L-cystine NQR sulfur-33 |
| Résumé: | © 2023 John Wiley & Sons, Ltd. The sulfur electric-field-gradient tensor for a disulfide bond in 33 S2 -labeled L-cystine has been investigated by 33 S nuclear quadrupole resonance (NQR). 33 S2 -labeled L-cystine is synthesized by introduction of disulfide ions prepared from elemental 33 S-sulfur into an amino acid derivative, the side chain of which is iodinated. In its NQR spectrum, sharp single peaks are observed at between 24.63 and 24.90 MHz in the temperature range from 80 to 298 K. The two-dimensional nutation echo 33 S NQR experiment is carried out at 160 K, and the quadrupole coupling constant, CQ , and the asymmetric parameter, ηQ , are obtained to be 46.9(9) MHz and 0.6(1), respectively. The calculated 33 S electric-field-gradient tensor components with respect to the molecular frame is briefly discussed |
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| Description: | Date Completed 03.04.2023 Date Revised 03.04.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1097-458X |
| DOI: | 10.1002/mrc.5333 |