13C/15N distance determination by CPMAS NMR in uniformly13C labeled molecules

Autor:	Maggy Hologne, Jérôme Hirschinger, Jésus Raya
Rok vydání:	2006
Předmět:	Coupling constant Field (physics) Solid-state nuclear magnetic resonance Chemistry Magic angle spinning Analytical chemistry Molecule General Materials Science General Chemistry Anisotropy Homonuclear molecule Magnetic dipole–dipole interaction
Zdroj:	Magnetic Resonance in Chemistry. 44:174-177
ISSN:	1097-458X 0749-1581
DOI:	10.1002/mrc.1744
Popis:	The REDOR and CPMAS techniques are applied for measuring 13C15N dipolar coupling constants in glycine. It is shown that the selective CP or SPECIFIC CP technique removes the coherent evolution of the spin system under homonuclear 13C13C J couplings. While the large coupling constant (∼900 Hz) is readily determined because of the presence of large oscillations in the CPMAS dynamics, their absence precludes the measurement of the small coupling constant (∼200 Hz). The experimental results and numerical simulations demonstrate that the determination of 13C15N coupling constants of medium size (
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fcfb70e355b3b7b991c5e80dbf170aa https://doi.org/10.1002/mrc.1744 Zobrazit plný text záznamu Plný text