ENDOR studies of alkyl substituted p-Benzosemiquinones in reversed micelles and in 2-propanol

Autor:	Dominique Niethammer, Peizhu Tian, Burkhard Kirste, Harry Kurreck
Rok vydání:	1992
Předmět:	chemistry.chemical_classification Semiquinone Photochemistry Micelle Atomic and Molecular Physics and Optics law.invention Propanol chemistry.chemical_compound chemistry law Molecule Electron paramagnetic resonance Conformational isomerism Hyperfine structure Alkyl
Zdroj:	Applied Magnetic Resonance. 3:1-18
ISSN:	1613-7507 0937-9347
DOI:	10.1007/bf03166777
Popis:	Various substituted p-benzosemiquinone radical anions, inter alia ubisemiquinone and derivatives, have been investigated in 2-propanol and in reversed micelles by EPR and ENDOR spectroscopy. Unsymmetrical semiquinones, with respect to the oxygen atoms, experience remarkable hyperfine shifts depending on the medium. This effect even allows differentiation between stereoisomers. Immobilization of the semiquinone molecules at the water-surfactant interface in reversed micelles gives rise to pronounced asymmetric linewidth effects. In the case of 2-cyclohexyl-3-methyl-1,4-benzosemiquinones, mixtures of two species (conformers) have been observed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::965e696a2b4dc616d4448ae1232318f5 https://doi.org/10.1007/bf03166777 Zobrazit plný text záznamu Full text from SpringerLink