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13C and 15N NMR study of mesoionic type A and type B tetrazoles with four nitrogen atoms in the exocyclic group

✍ Scribed by Wiktor Koźmiński; Jarosaw Jaźwiński; Lech Stefaniak; Graham A. Webb

Publisher: John Wiley and Sons
Year: 1994
Tongue: English
Weight: 285 KB
Volume: 32
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260321208

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✦ Synopsis

Abstract

^13^C and ^15^N NMR measurements are reported from a study of five mesoionic compounds containing either the 2,3‐diphenyl‐ or 1,3‐diphenyltetrazolium ring, and either the 2,3‐diphenyltetrazolium ring or its linear analogue as an exocyclic group. Three ^15^N‐labelled compounds were synthesized for signal assignment purposes. Some ^15^N^13^C and ^15^N^15^N coupling constants were determined. A proton was found to be located on the exocyclic groups of two of the compounds.

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