Quadrupolar nuclei MAS-NMR using residual dipolar splittings in solids

摘要

A method for obtaining NMR (= nuclear magnetic resonance) spectra of quadrupolar nuclei having spin I ½ using magic angle spinning (= MAS) in solid powders and transfer of coherences from a neighbouring nucleus with spin S=½ to single- or double-quantum transitions of quadrupolar nuclei having spin I ½, is characterized in that the transfer of coherences occurs through a combination of scalar and residual dipolar splittings. With the inventive method improved NMR-spectra can be obtained from which parameters can be extracted, which can be related to the structure and internal dynamics of solids containing the quadrupolar nuclei.