Dynamic NMR study of the electronic state of heteroaromatics. V-Influence of the counter anion, ortho substituents and the ring heteroatom on the exocyclic C,N rotational barrier of pyrylium and thiopyrylium salts

The 13C NMR spectra and variable‐temperature 1H NMR spectra of some NR2‐substituted pyrylium and thiopyrylium salts were studied, and the rotational barriers thus obtained about the exocyclic partial CN double bonds are discussed according to their dependence on the counter anion and other structur...

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Veröffentlicht in:	Magnetic resonance in chemistry 1989-08, Vol.27 (8), p.713-718
Hauptverfasser:	Kleinpeter, E., Spitzner, R., Schroth, W.
Format:	Artikel
Sprache:	eng
Schlagworte:	1H NMR spectra Mesomerism in pyrylium and thiopyrylium salts Partial double bond character Rotational barriers
Online-Zugang:	Volltext
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