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Application of 2D NMR spectroscopy to the complete analysis of the 1H NMR spectra of 1- and 3-nitrobenzo[e]pyrene

✍ Scribed by Leiv K. Sydnes; Tore Skjetne

Publisher: John Wiley and Sons
Year: 1986
Tongue: English
Weight: 535 KB
Volume: 24
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260240410

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✦ Synopsis

COSY and NOESY spectra (400 MHz) have been used to complete the assignment of the 'H NMR spectra of 1and 3-nitrobenzo[e]pyrene. Both compounds show strong bay region nuclear Overhauser enhancement and significant coupling across bay regions. Both compounds also exhibit extensive long-range couplings. For l-nitrobenzo[e]pyrene the most spectacular couplings are between H-4 and H-6 and between H-4 and H-8. The most unusual long-range couplings m 3-nitrobenzo[e]pyrene are between H-1 and H-5, H-2 and H-7 and H-4 and H-8. Simulation of the spectra reveals that all short-range coupling constants are normal, and confirms the presence of the long-range couplings.

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