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Structural studies on some mesoionic compounds using nitrogen NMR

✍ Scribed by J. Jazwinski; L. Stefaniak; G. A. Webb

Publisher
John Wiley and Sons
Year
1988
Tongue
English
Weight
211 KB
Volume
26
Category
Article
ISSN
0749-1581

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✦ Synopsis

H, 13C, "N and "N NMR data are reported for two 1,2,3,4-oxatriazolium-!+thiolates and for two 1,2,3,4 thiatriazolium-5-olates. It is demonstrated that nitrogen NMR is the most sensitive technique for determining the structures of these mesoionic compounds; of particular significance is the N-2 chemical shift, which distinguishes between the presence of either oxygen or sulphur in position 1. Cyclic structures are confirmed for these compounds on the basis of the nitrogen chemical shifts.

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