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Narrowband Excitation of 2H Powder Pattern and Its Application to 2H 1D Exchange Sample-Turning NMR

✍ Scribed by D. Reichert; Takashi Mizuno; K. Takegoshi; Takehiko Terao

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
89 KB
Volume
139
Category
Article
ISSN
1090-7807

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✦ Synopsis

Frequency-selective narrowband excitation of the (2)H powder pattern was examined. Selection of a single spectral band with a linewidth of ca. 15 kHz was achieved by a narrowband (1)H --> (2)H cross polarization by using the time-averaged precession frequency method. Further narrowing with a ca. 5 kHz linewidth is achieved by DANTE irradiation. The narrowband excitation was applied to transform a recently developed 2D spin-exchange method for obtaining structural information (Chem. Phys. Lett. 260, 159, (1996)) into its 1D analogue. The determination of the D-C-D bond angle was demonstrated for alpha-glycine-[2,2-d(2)]. Further, the intermolecular polarization transfer between two deuterons separated by 0.299 nm was detected with the mixing time of 500 ms.

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