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The 15N-isotopomers of cis- and trans-difluorodiazine; A 19F NMR investigation of the two [AX]2 spin systems of 15N2F2

✍ Scribed by F. Aubke; G. Hägele; H. Willner

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
344 KB
Volume
33
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The decomposition of ^15^N~3~F at −20°C leads to cis‐ and trans‐^15^N~2~F~2~. The corresponding ^19^F NMR spectra were analysed as [AX]~2~ systems. ^19^F, ^15^N and ^14^N 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 ^19^F NMR spectra from both the [^1/2^A^1/2^X]~2~ and the [^1^A^1/2^X]~2~ systems in ^15^N~2~F~2~ and ^14^N~2~F~2~ overcomes the inherent ambiguities of the [AX]~2~ analysis.

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