Double quantum modulation NMR spectroscopy on spins with I = 1 in solids
β Scribed by Yuval Zur; Shimon Vega
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 451 KB
- Volume
- 80
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
NMR experiments with amphtude modulated rf pulses arc introduced for the detection of double quantum coherenccs from spin I = 1 nuclei with large quadrupolar frequeycp VQ in solids. rf pulses of intensity ~t and with modulation frcqucncy vrn create effective irradiation fields of mtenslty ~YJ(LQ -urn) < vQ + v,. 2D-IWR measurements on an orlented single crystal on the double quantum transition when ~1 < lvQ -1.~1 of deuterated malonic acid are presented.
π SIMILAR VOLUMES
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Signal enhancement in heteronuclear correlation spectra as well as signal selection in 1 H experiments can be achieved through inverse, i.e., 1 H, detection in the solid state under fast MAS conditions. Using recoupled polarization transfer (REPT), a heteronuclear 1 H-15 N single-quantum correlation
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