Acid-base interactions of benzo-annelated porphyrazines in proton-donor media

Acid-base interactions of benzo-annelated trifluoromethylphenylporphyrazines in media based on acetic and trifluoroacetic acids were studied. The quantitative characteristics of the equilibria between acid-base species were obtained. Variation of the porphyrazine structure leads to changes not only in the macroring basicity, but also in the structure and order of formation of acidic species depending on the nature of the proton-donor medium.