High spin states in the mirror nuclei 15O and 15N
β Scribed by L. Kraus; I. Linck; J.C. Sens; M. Toulemonde
- Publisher
- Elsevier Science
- Year
- 1977
- Weight
- 72 KB
- Volume
- 146
- Category
- Article
- ISSN
- 0029-554X
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π SIMILAR VOLUMES
Enhancement of sensitivity in solid state 15 N NMR by indirect detection through 1 H NMR signals under high-speed magic angle spinning and high-field conditions is demonstrated experimentally on two 15 N-labeled peptides, polycrystalline AlaGlyGly and the helix-forming, 17-residue peptide MB(i Ψ 4)E
Using dynamic 15N CPMAS NMR spectroscopy a novel double proton transfer was detected in the cyclic hydrogen bonded dimers of polycrystalline tSN,ZSN'-di-(4-bromophenyl)-formamidine. Rate constants of this process, which is degenerate within the margin of error, were obtained by lineshape (kl2 = 10 6