Elektronenspinresonanzmessungen zur Untersuchung von Kinetik und Mechanismus von Cu2+-katalysierten Reaktionen

Autor:	H. Loeliger, Kurt Wüthrich, Silvio Fallab
Rok vydání:	1964
Předmět:	Pharmacology Denticity Stereochemistry Kinetics Cell Biology law.invention Catalysis Cellular and Molecular Neuroscience chemistry.chemical_compound chemistry law Pyridine Molecular Medicine Physical chemistry Imidazole Electron paramagnetic resonance Molecular Biology
Zdroj:	Experientia. 20:599-601
ISSN:	1420-9071 0014-4754
Popis:	Cu2+-complexes with different monodentate ligands PYR, e.g. pyridine, 2,4,6-collidine and imidazole, catalyse the oxidation ofo-phenylenediamine (H2B) to 3,5-dihydro-2-amino-3-iminophenazine (PHEN) by O2. Investigation of the electron paramagnetic resonance during reaction gives interesting details on the function of Cu2+ as a catalyser. The formation of mixed complexes (H2B)Cu2+(PYR) and its influence on the reaction rated[PHEN]/dt is demonstrated. In the ratedetermining reaction, Cu2+ is reduced to Cu+, which is reoxidized by O2. During reaction the ratio [Cu2+]/[Cu+] is determined by means of e.p.r. measurements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cdfd347b8da139148132927015b149c6 https://doi.org/10.1007/bf02144805 Zobrazit plný text záznamu Full text from SpringerLink