ISSN:
0749-1581
Keywords:
Heteronuclear relayed coherence transfer
;
Carbon-carbon double quantum coherence
;
Two-dimensional NMR
;
2D NMR
;
Polynuclear aromatics
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Two-dimensional heteronuclear chemical shift correlation, heteronuclear relayed coherence transfer and autocorrelated 13C - 13C double quantum coherence have been used to assign the proton and 13C NMR spectra of benzo[b]phenanthro[4,3-d]thiophene. The highly complementary nature of the heteronuclear relay and carbon-carbon double quantum spectra conveniently provides the means of avoiding breaks in the carbon-carbon connectivity network assembled by the latter, which may arise when strongly AB rather than AX carbon-carbon pairings are encountered. Nuclear Overhauser difference spectra have shown the title compound to possess a tertiary helical structure similar to that of phenanthro[3,4-b]thiophene; the average separation between the H-1 and H-13 atoms of the title compound was found to be 2.06 ± 0.04 Å.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260241206
