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13C n.m.r. investigation on the first and second nitrogen protonation in the diazanaphthalenes

✍ Scribed by Peter van de Weijer; Dirk M. W. van den Ham; Douwe van der Meer

Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
403 KB
Volume
9
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The ^13^C chemical shifts of the diazanaphthalenes have been recorded as a function of the pH value, providing classical titration curves. From these curves the p__K__~1~ and p__K__~2~ values have been determined taking into account the activity coefficients. The changes in ^13^C chemical shift under the influence of nitrogen protonation (Δδ) can be described by two protonation parameter sets.

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