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Correlation of molecular orbital indices of reactivity and proton chemical shifts: Acenaphtho[1,2-b]- and -[1,2-c]thiophens

✍ Scribed by K. D. Bartle

Publisher: John Wiley and Sons
Year: 1973
Tongue: English
Weight: 203 KB
Volume: 5
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270050209

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✦ Synopsis

Abstract

Nuclear magnetic resonance proton chemical shifts may be correlated with free valence, a representative reactivity index, for fluoranthene and two novel sulphur heterocyclic analogues, acenaphtho[1,2‐b]‐ and ‐[1,2‐c]thiophens. Such correlations arise fortuitously, however, and an attempt to explain them in terms of intrinsic properties of the Hückel‐McWeeny theory of proton shielding is proved to be fallacious.

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