Synthesis and Acid–Base Properties of β-Octabromo-Substituted Unsymmetrical Nitrophenylporphyrins


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Аннотация

The bromination of [5-(4-nitrophenyl)-10,15,20-triphenylporphyrinato]cobalt(II) and [5,10,15-tris-(4-nitrophenyl)-20-phenylporphyrinato]cobalt(II) with N-bromosuccinimide in a mixture of chloroform and dimethylformamide gave [2,3,7,8,12,13,17,18-octabromo-5-(4-nitrophenyl)-10,15,20-triphenylporphyrinato]-cobalt(II) and [2,3,7,8,12,13,17,18-octabromo-5,10,15-tris(4-nitrophenyl)-20-phenylporphyrinato]cobalt(II). Treatment of the cobalt complexes with a mixture of perchloric and sulfuric acids afforded the corresponding metal-free porphyrins. Electron absorption, 1H NMR, and mass spectra of the synthesized compounds were studied, and acidity and basicity constants of the porphyrin ligands in acetonitrile were determined.

Авторлар туралы

Yu. Ivanova

Krestov Institute of Solution Chemistry

Хат алмасуға жауапты Автор.
Email: jjiv@yandex.ru
Ресей, Ivanovo

N. Chizhova

Krestov Institute of Solution Chemistry

Email: jjiv@yandex.ru
Ресей, Ivanovo

N. Mamardashvili

Krestov Institute of Solution Chemistry

Email: jjiv@yandex.ru
Ресей, Ivanovo

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