Abstract
The acid–base interaction between octa(m-trifluoromethylphenyl)porphyrazine and pyridine, 2‑methylpyridine, morpholine, and piperidine in the benzene–dimethylsulfoxide system is studied. It is found that the intermolecular proton transfer of NH groups from octa(m-trifluoromethylphenyl)porphyrazine to morpholine and piperidine proceeds with unusually low rate constants. It is shown that the β,β-benzoannelation in a porphyrazine macrocycle and the base affect the kinetic parameters of the process. A structure is proposed for the proton-transfer complexes of substituted porphyrazines. It is found that they decompose over time.
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