✦ LIBER ✦
Concerning the Hydroxyazo-Quinonehydrazone Equilibrium of a Trisazonaphthalene with an [18]annulene perimeter macrocyclic Aza compounds, III
✍ Scribed by Peter Skrabal; Jürg Steiger; Heinrich Zollinger
- Publisher
- John Wiley and Sons
- Year
- 1976
- Tongue
- German
- Weight
- 262 KB
- Volume
- 59
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
The hydroxyazo‐quinonehydrazone equilibrium of the cyclic triazonaphthalene 1 has been determined from the ^1^H‐NMR. spectrum of the ^15^N‐labelled compound. The size of the coupling constant J~15~~N, H~ demonstrates that the equilibrium of 1 with respect to the non‐cyclic reference compound 6 is shifted towards the hydroxyazo form by factors of at least 5.1 and 3.9 in DMSO and H~2~O, respectively.