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  3. THE N-15-ISOTOPOMERS OF CIS-DIFLUORODIAZINE AND TRANS-DIFLUORODIAZINE - A F-19 NMR INVESTIGATION OF THE 2 [AX](2), SPIN SYSTEMS OF (N2F2)-N-15

THE N-15-ISOTOPOMERS OF CIS-DIFLUORODIAZINE AND TRANS-DIFLUORODIAZINE - A F-19 NMR INVESTIGATION OF THE 2 [AX](2), SPIN SYSTEMS OF (N2F2)-N-15

TitleTHE N-15-ISOTOPOMERS OF CIS-DIFLUORODIAZINE AND TRANS-DIFLUORODIAZINE - A F-19 NMR INVESTIGATION OF THE 2 [AX](2), SPIN SYSTEMS OF (N2F2)-N-15
Publication TypeJournal Article
Year of Publication1995
AuthorsAubke, F, Hagele, G, Willner, H
JournalMagnetic Resonance in Chemistry
Volume33
Pagination817-822
Date PublishedOct
Type of ArticleArticle
ISBN Number0749-1581
KeywordsDCYMPCD, DSYMPCD, F-19, N-14, N-15, N2F2, NMR, WIN-DAISY
Abstract

The decomposition of (N3P)-N-15 at - 20 degrees C leads to cis- and trans-(N2F2)-N-15. The corresponding F-19 NMR spectra were analysed as [AX](2) systems. F-19, N-15 and N-14 NMR spectra were simulated using the novel PC program systems DSYMPCD, DCYMPCD and WIN-DAISY running under WIN-NMR. Stereospecific coupling constants were obtained for both isomers. Comparison of the F-19 NMR spectra from both the [(1/2)A(1/2)X](2) and the[(1)A(1/2)X](2) systems in (N2F2)-N-15 and (N2F2)-N-14 overcomes the inherent ambiguities of the [AX](2) analysis.
URL<Go to ISI>://A1995RY96200008