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Carbon-13 spectra of some heterocyclic analogues of biphenylene

✍ Scribed by J. A. Hugh MacBride; Mei Ling Leow; (the late) Peter M. Wright; John P. Kilcoyne; Basil J. Wakefield

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
219 KB
Volume
25
Category
Article
ISSN
0749-1581

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✦ Synopsis

The 13C chemical shifts for 2,7-, 1,sand 1,6-diazabiphenylenes are reported, together with some coupling constants and the I3C chemical shifts of a benzothiophene analogue of biphenylene. The results can be explained by the existence of a paramagnetic ring current in the four-membered ring of the nitrogen-containing compounds which is absent in the case of the benzothiophene. A possible explanation is offered.

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