Ultraviolet Absorption Spectra of Three Isomeric Pyridine Monocarboxylic Acids and TheirN-Oxides
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چکیده
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Complex Constants and Ultraviolet Absorption Spectra
The complex formation between Cu (I) Cl and Cl was investigated in a 1 M HC104 ionic medium at 22 °C. In saturated CuCl(s) — Cl'-solutions over the concentration range 0 — 0.25 M Cl" the only complexes observed are CuCl2" and CuCl32-. The complex constants for the formation of these complexes are l o g ß n = —1.31 and log / ? 1 2 = —1.6 respectively. The UV-absorption spectra of CuCl2~ and CuCl...
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The ultraviolet spectra of heterocyclic N-oxides of pyridine N-oxide series and the conjugated cationic acids (simple cations of protonated N-oxides) in acetonitrile as the representative of polar aprotic solvents, were determined. The obtained spectra of N-oxides studied (mainly tri-substituted pyridine N-oxides) and their cations obtained by the protonation of free N-oxides by the excess of p...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1958
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.31.255