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Acid-base properties of 1-(2-pyridylazo)-2-naphthol and 1-(2-thiazolylazo)-2-naphthol in a dimethyl sulfoxide and N,N-dimethylformamide medium

E. Šimuničová and D. Rúriková

Lehrstuhl für Analytische Chemie der Naturwissenschaftlichen Fakultät der Komenský- Universität, 81650 Bratislava

 

Abstract:  The dissociation constants of l-(2-pyridylazo)-2-naphthol and l-(2-thiazolylazo)-2-naphthol in dimethyl sulfoxide and N,N-dimethylformamide have been determined by means of spectrophotometry using buffer mixtures of organic acids and their tetraalkylammonium salts. On the basis of the results obtained the conclusions concerning the influence of solvents on the studied equilibria have been drawn.

Full paper in Portable Document Format: 331a57.pdf (in German)

 

Chemical Papers 33 (1) 57–63 (1979)

Wednesday, August 05, 2020

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