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

Aubke F. | Zendy; Hägele G. | Zendy; Willner H. | Zendy

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

Author(s) -

Aubke F.,

Hägele G.,

Willner H.

Publication year - 1995

Publication title -

magnetic resonance in chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0749-1581

DOI - 10.1002/mrc.1260331009

Subject(s) - isotopomers , chemistry , nmr spectra database , coupling constant , spectral line , stereospecificity , nuclear magnetic resonance spectroscopy , spin (aerodynamics) , crystallography , stereochemistry , analytical chemistry (journal) , molecule , physics , catalysis , organic chemistry , particle physics , astronomy , thermodynamics

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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