Line-width alternation by methoxy group rotation in the electron spin resonance spectra of a phenoxy radical
作者： W.J van den Hoek , W.G.B Huysmans , M.J.C van Gemer
DOI: 10.1016/0022-2364(70)90041-7
关键词: Line width 、 Phenoxy radical 、 Nuclear magnetic resonance 、 Physical chemistry 、 Alternation (geometry) 、 Spectral line 、 Dielectric 、 Electron spin resonance spectra 、 Relaxation matrix 、 Chemistry 、 Activation energy 、 General Engineering
摘要: Abstract ESR spectra of the 2,6-dimethyl-4-methoxyphenoxy radical show line-width alternation at temperatures from 0 to −80°C. The effect is ascribed rotation methoxy group. analysis given in terms relaxation matrix theory. From a value 7.8 kcal/mole estimated for experimental energy activation. This compared with dielectric data.
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sci-hub.se 参考文章(22)
W.J. Mijs, J.H. van Dijk, W.G.B. Huysmans, J.G. Westra, Catalytic oxidation of phenols Tetrahedron. ,vol. 25, pp. 4233- 4240 ,(1969) , 10.1016/S0040-4020(01)82961-6
Walter John, Franz H. Rathmann, Über die Synthese und Struktur der Pseudocumohydrochinon-mono-alkyläther European Journal of Inorganic Chemistry. ,vol. 73, pp. 995- 1001 ,(1940) , 10.1002/CBER.19400730912
W.G.B. Huysmans, W.J. Mijs, J.G. Westra, W.J.pp]van den Hoek, H.Angad Gaur, J. Smidt, NMR studies of the quinone ketal dimer, obtained from oxidation of 4-ethoxydurenol Tetrahedron. ,vol. 25, pp. 2249- 2257 ,(1969) , 10.1016/S0040-4020(01)82773-3
W. G. B. Huysmans, William A. Waters, Aryloxy-radicals. Part VI. Measurement of the electron spin resonance spectra of short-lived substituted phenoxy-radicals in benzene solution Journal of the Chemical Society B: Physical Organic. pp. 1047- 1049 ,(1966) , 10.1039/J29660001047
S. K. Garg, C. P. Smyth, Microwave Absorption and Molecular Structure in Liquids. LXVIII. Dielectric Behavior at 2.2‐mm Wavelength and Intramolecular Motion in Five Substituted Benzenes and Cyclohexanes The Journal of Chemical Physics. ,vol. 46, pp. 373- 377 ,(1967) , 10.1063/1.1840397
A. Hudson, K.D.J. Root, An electron spin resonance study of some aliphatic and alicyclic ether radicals Tetrahedron. ,vol. 25, pp. 5311- 5317 ,(1969) , 10.1016/0040-4020(69)80053-0
Paul D. Sullivan, James R. Bolton, An electron spin resonance study of the cation radicals of dimethylhydroquinones Journal of the American Chemical Society. ,vol. 90, pp. 5366- 5370 ,(1968) , 10.1021/JA01022A005
T. E. Gough, Analysis of line-width effects in the electron spin resonance spectra of monoprotonated semiquinones Canadian Journal of Chemistry. ,vol. 47, pp. 331- 337 ,(1969) , 10.1139/V69-045
W. F. Forbes, P. D. Sullivan, ORGANIC AND BIOLOGICAL SPECTROCHEMICAL STUDIES: XXIII. CONFORMATION OF THE p-DIMETHOXYBENZENE CATION RADICAL IN CONCENTRATED SULFURIC ACID Canadian Journal of Chemistry. ,vol. 44, pp. 1501- 1512 ,(1966) , 10.1139/V66-225
Jack H. Freed, George K. Fraenkel, Anomalous Alternating Linewidths in ESR Spectra The Journal of Chemical Physics. ,vol. 37, pp. 1156- 1157 ,(1962) , 10.1063/1.1733238