3 J (H,H) Coupling Constants as a Simple Criterion for π Delocalization of Pentafulvenes and Pentafulvalenes

A simple criterion for estimating the extent of π delocalization in the five‐membered ring of pentafulvenes and pentafulvalenes is described. It is based on the fact that changes of bond lengths (induced by exocyclic substituents R 1 ‐R 2 of 1 ) are reflected by systematic changes of 3 J (H,H) value...

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Veröffentlicht in:	Helvetica chimica acta 1991-12, Vol.74 (8), p.1823-1833
Hauptverfasser:	Neuenschwander, Markus, Bönzli, Peter
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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