Abstract
Stability constants were determined for acid forms of octa(4-chloromethylphenyl)-, octa(4-bromophenyl)-, and octa(4-nitrophenyl)tetraazaporphyrins, formed by acid-base interactions in H2SO4-CH3COOH mixtures. The probability of formation of each form depends not only on the electronic structure of the molecule, but also on the composition and properties of the medium.
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Khelevina, O.G., Rumyantseva, S.V., Chizhova, N.V. et al. Acid-Base Properties of Octaaryltetraazaporphyrins. Russian Journal of General Chemistry 73, 478–481 (2003). https://doi.org/10.1023/A:1024982625405
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DOI: https://doi.org/10.1023/A:1024982625405