Pure shift NMR
نویسندگان
چکیده
منابع مشابه
Ultraclean pure shift NMR.
"Pure shift" methods can greatly improve the resolution of proton NMR spectra. However, current pure shift spectra show small periodic artefacts that prevent their use for studying dilute mixture components. A new technique, compatible with all current pure shift methods, is presented that suppresses such sidebands to arbitrary order, allowing ultraclean spectra to be obtained.
متن کاملMeasuring couplings in crowded NMR spectra: pure shift NMR with multiplet analysis.
The PSYCHE method for pure shift NMR is exploited to generate 2D J spectra with full decoupling in one dimension and multiplet structure in the other, allowing spin-spin coupling constants to be measured even in very crowded spectra. Significant improvements over existing techniques are demonstrated for the hormones estradiol and androstenedione.
متن کاملDiastereomeric ratio determination by high sensitivity band-selective pure shift NMR spectroscopy.
An NMR method is reported that allows diastereomeric ratios to be determined even in crowded spectra or where chemical shift differences are small compared to multiplet widths. Band-selective pure shift NMR collapses multiplets to singlets, greatly improving spectral resolution while largely retaining, or even enhancing, signal-to-noise ratio.
متن کاملQuick re-introduction of selective scalar interactions in a pure-shift NMR spectrum.
A new 1D NMR experiment cited as 'Quick G-SERF', which re-introduces selective proton-proton scalar interactions in a pure shift spectrum during real time data acquisition, is reported. The method provides information on multiple proton-proton couplings from a single experiment, analogous to the 2D G-SERF technique, while significantly shortening the experimental time by 1-2 orders of magnitude...
متن کاملZero-quantum filtered pure shift TOCSY.
The high spectral resolution provided by the pure shift TOCSY experiment can be significantly improved by zero-quantum filtering which eliminates dispersive anti-phase contributions from the spectrum.
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ژورنال
عنوان ژورنال: Progress in Nuclear Magnetic Resonance Spectroscopy
سال: 2015
ISSN: 0079-6565
DOI: 10.1016/j.pnmrs.2015.02.002