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Deuterium isotope effects on 15N chemical shifts of double Schiff bases in the solid state and solution

✍ Scribed by T. Dziembowska; K. Ambroziak; Z. Rozwadowski; W. Schilf; B. Kamieński

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
95 KB
Volume
41
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The proton transfer equilibrium in a series of double Schiff base derivatives of trans‐1,2‐diaminocyclohexane in solution and the solid state was studied by means of ^15^N NMR spectroscopy and analysis of the deuterium isotope effect on the chemical shifts Δ^15^N(D). The presence of a proton transfer equilibrium in the N‐2‐hydroxynaphthylidene moieties of the Schiff bases studied in the solid state at room temperature was evidenced. The results confirmed the interrelation of the two hydrogen bonds in double Schiff base derivatives of trans‐1,2‐diaminocyclohexane. Copyright © 2003 John Wiley & Sons, Ltd.

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