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Phtalocyanine in wässeriger Lösung III. Säuredissoziation der Pyrrol-NH-Gruppe in Phtalocyanintetrasulfonsäure

✍ Scribed by Klaus Bernauer; S. Fallab

Publisher
John Wiley and Sons
Year
1962
Tongue
German
Weight
490 KB
Volume
45
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

The acid NH‐dissociation of Pthalocyanintetrasulfonate has been investigated. We found, that the monomer H~2~PTS behaves as a moderately weak acid. The p__K__~a~‐value has been determined to 9,6. Due to steric and electrostatic hindrance of attack by hydroxide ion the reaction is surprisingly slow. The bimolecular rate constant is of the order of 3·10^2^ l mol^−1^ s^−1^.

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Phtalocyanine in wässeriger Lösung IV. K
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