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Dynamic Nuclear Magnetic Resonance Study of Rotational Isomerism in Naphthalenes Peri Substituted with Triazole Rings

✍ Scribed by Yoshinobu Nagawa; Koichi Honda; Hiroshi Nakanishi

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 368 KB
Volume: 34
Category: Article
ISSN: 0749-1581
DOI: 10.1002/(sici)1097-458x(199601)34:1<78::aid-omr816>3.0.co;2-t

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✦ Synopsis

Rotational isomerism of l,l'-(1,8-naphthylene)bis(lH-1,2,3-triazoles) was studied by dynamic NMR spectroscopy. Rotation around the C-N bond between triazole and the naphthalene rings in such compounds is restricted owing to the repulsion of the two triazole rings. The rotational barrier around the C-N bond becomes high when the methyl group is introduced at the 5-position in the triazole ring.