ISSN:
0749-1581
Keywords:
2D NMR
;
heteronuclear chemical shift correlation
;
COSY
;
double quantum coherence
;
zero quantum coherence
;
relayed coherence transfer
;
J-filtration
;
long range heteronuclear shift correlation
;
BIRD pulse
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The 1H- and 13C-NMR spectra of dinaphtho[1,2-b:1′2′-d]thiophene (1), a sulfur-containing polynuclear heteroaromatic, have been totally assigned using a combination of two-dimensional NMR techniques. Techniques applied were standard proton-proton COSY, proton zero-quantum coherence (ZQCOSY, optimized to 7 Hz and to 1.75 Hz), proton double quantum coherence (DQCOSY, optimized to 7 Hz), broad-band decoupled (both dimensions) proton-carbon chemical shift correlation, long-range proton-carbon chemical shift correlation, and proton-carbon heteronuclear relayed coherence transfer. A comparison of these methods on 1 showed the most useful information concerning connectivities to be obtained from the zero-quantum coherence and long-range heteronuclear correlation experiments. A detailed critique of each type of experiment is given in the context of applications to polynuclear aromatics.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260261007
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