From Chemistry Towards Technology Step-By-Step From Chemistry Towards Technology Step-By-Step От химии к технологии шаг за шагом 2782-1900 81498 10.52957/2782-1900-2024-4-3-76-80 Научные статьи Scientific articles Научные статьи Assessment of polyfunctional macrocyclic compounds in solution by cryoscopic method Assessment of polyfunctional macrocyclic compounds in solution by cryoscopic method Березина Надежда Михайловна Berezina Nadezhda Mihaylovna

кандидат химических наук;

candidate of chemical sciences;

 Колесов Егор Евгеньевич Kolesov Egor Evgen'evich Ивановский государственный химико-технологический университет Ivanovo State University of Chemistry and Technology 23 09 2023 23 09 2023 4 3 76 80 01 09 2023 08 09 2023 https://chemintech.ru/en/nauka/article/81498/view

The article considers the synthesis of meso-tetrakis(1'-methyl-pyrid-4-yl)porphyrin tetratosylate and meso-tetrakis(1'-methyl-carboxymethylpyrid-4-yl)porphyrin tetrabromide. The authors qualified the porphyrin ligands in terms of the electron and 1H NMR spectroscopy. The research determines the decrease of freezing point (ΔTfr) of aqueous solutions of porphyrins, as well as a model N-methyl-pyridinium salt (1 methyl-pyridinium iodide). We used the obtained experimental values of ΔT3 to determine the isotonic coefficient. The obtained results indicate the compounds are almost completely dissociated in the indicated concentration range in dilute solutions.

The article considers the synthesis of meso-tetrakis(1'-methyl-pyrid-4-yl)porphyrin tetratosylate and meso-tetrakis(1'-methyl-carboxymethylpyrid-4-yl)porphyrin tetrabromide. The authors qualified the porphyrin ligands in terms of the electron and 1H NMR spectroscopy. The research determines the decrease of freezing point (ΔTfr) of aqueous solutions of porphyrins, as well as a model N-methyl-pyridinium salt (1 methyl-pyridinium iodide). We used the obtained experimental values of ΔT3 to determine the isotonic coefficient. The obtained results indicate the compounds are almost completely dissociated in the indicated concentration range in dilute solutions.

 Water-soluble tetrapyridylporphyrins water isotonic coefficient cryoscopy

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