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- Title
Synthesis and basic properties of bisporphyrinocalix[4]arene.
- Authors
Ivanova, Yu. B.; Churakhina, Yu. I.; Mamardashvili, N. Zh.
- Abstract
A bisporphyrinocalix[4]arene was prepared, and its basicity was examined spectrophotometrically. The protonation of tetrapyrrole fragments of the porphyrinocalixarene conjugate in the ethanol-sulfuric acid system occurs in two steps and is described by the Hammett equation. The ionization constants and the concentration intervals of the formation of the mono-and dicationic forms of the bisporphyrinocalixarene were determined.
- Subjects
AROMATIC compounds; PROTON transfer reactions; TETRAPYRROLES; HAMMETT equation; IONIZATION (Atomic physics); SCISSION (Chemistry)
- Publication
Russian Journal of General Chemistry, 2008, Vol 78, Issue 4, p673
- ISSN
1070-3632
- Publication type
Article
- DOI
10.1134/S1070363208040269