ISSN:
0749-1581
Keywords:
13C NMR
;
Heterocyclic biphenylene
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The 13C chemical shifts for 2,7-, 1,8- and 1,6-diazabiphenylenes are reported, together with some coupling constants and the 13C 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.
Additional Material:
4 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260250907
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