Acid‐base equilibria of dipyridylethylenes studied by absorption and fluorescence spectrometry | Zendy

Beggiato G. | Zendy; Favaro G. | Zendy; Mazzucato U. | Zendy

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Acid‐base equilibria of dipyridylethylenes studied by absorption and fluorescence spectrometry

Author(s) -

Beggiato G.,

Favaro G.,

Mazzucato U.

Publication year - 1970

Publication title -

journal of heterocyclic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 59

eISSN - 1943-5193

pISSN - 0022-152X

DOI - 10.1002/jhet.5570070317

Subject(s) - chemistry , protonation , fluorescence , mass spectrometry , dissociation (chemistry) , ion , absorption (acoustics) , analytical chemistry (journal) , dissociation constant , fluorescence spectrometry , base (topology) , photochemistry , chromatography , organic chemistry , mathematical analysis , mathematics , quantum mechanics , acoustics , biochemistry , physics , receptor

In connection with photochemical and fluorimetric studies and with previous p K measurements on styrylpyridines, the acid‐base equilibria of the trans ‐1,2‐dipyridylethylenes have been studied by absorption and fluorescence spectrometry. The results obtained by the two methods are compared and the p K 's of first and second protonation discussed in dependence with the nitrogen positional isomerism. The measurements of the dissociation constant of the trans ‐3‐styrylpyridinium ion is also reported as a particularly convenient application of fluorescence spectrometry.

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