Ion radicals. XIII. Spectroscopic and cryoscopic characterization of ions and ion radicals from phenothiazine andN-methylphenothiazine in sulfuric acid solutions

Autor:	C. Veneziani, D. R. Thompson, H. J. Shine
Rok vydání:	1967
Předmět:	chemistry.chemical_compound Aqueous solution Absorption spectroscopy Chemistry Radical Phenothiazine Organic Chemistry Inorganic chemistry Sulfuric acid Protonation Photochemistry Dication Ion
Zdroj:	Journal of Heterocyclic Chemistry. 4:517-522
ISSN:	1943-5193 0022-152X
DOI:	10.1002/jhet.5570040410
Popis:	The formation and interconversion of the N-methylphenothiazine cation radical and the N-methylphenothiazine dication from both N-methylphenothiazine and N-methylphenothiazine S-oxide in sulfuric acid solutions have been demonstrated with e.s.r. and absorption spectroscopy. Cryoscopic measurements have shown that in slightly aqueous sulfuric acid N-methylphenothiazine S-oxide is converted to the N-methylphenothiazine dication and, analogously, phenothiazine 5-oxide is converted to the protonated phenazathionium ion (the phenothiazine dication).
Databáze:	OpenAIRE
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