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Spectroscopy
Volume 12, Issue 1, Pages 21-23
http://dx.doi.org/10.1155/1994/721710

Characteristic coupling constants 1J(13C-13C) of some mesoionic methylides contaIning a diphenyltetrazolium ring

Jaroslaw Jazwinski,1 Wtktor Kozminski,1 Lech stefaniak,1 and Graham A. Webl2

1Institute of Organic Chemistry, Polish Academy of Science, Kasprzaka 44/52, 01-224 Warsaw, Poland
2Department of Chemistry, University of Surrey, Guilford, Swrey GU2 5XH, UK

Copyright © 1994 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

1J(13C-13C) data are presented for some Types A and B tetrazoliwn methylides. The results show a large amoWlt of double bond character for the C5-C6 bond which is significantly reduced upon protonation. A similar decrease in bond order is noted for the C6-C8 bond following protonation.