Tetra-n-butylammonium salts effect the nuclear magnetic resonance response of the para and meta protons of nitrobenzene to a greater extent than that of the ortho protons in solutions in carbon tetra chloride. It is suggested that this effect may be due to a specific interaction between the ...
These parameters have to be scaled by the structure coefficients (weights) of the contributing structures. 展开 关键词: Catalytic ozonation p-Chloronitrobenzene Pumice Hydroxyl radical DOI: 10.1021/jp211105t 被引量: 5 年份: 2012 收藏 引用 批量引用 报错 分享 ...
Solvent effects in the electron spin resonance spectra of nitric oxide radicals and para-substituted nitrobenzene anions It is shown that the nitrogen hyperfine coupling parameters for nitric oxide radicals depend on the solvent. An equilibrium constant is calculated for the interaction of diphenyl nitric...
Cluster-derived Ru(x)Pt(y)Sn(z) nanoparticles are active catalysts in the hydrogenation of nitrobenzene. The nature of the active sites has been elucidated... ROGOVSKY A. J - 《Materials Evaluation》 被引量: 51发表: 1991年 The mechanism of efficient asymmetric transfer hydrogenation of acetop...
For further evidence bearing on the nature of these associations in aromatic solvents, three additional series of experiments were carried out. First, the solvent effects of toluene, mesitylene, 1,3,5-triisopropylbenzene,nitrobenzene, and N,N-dimethylaniline on the fornlyl shifts of benzaldehyde and...
And can you explain why in compounds the electron rich areas corresponds to the electron rich areas in the resonance structures of the compound ? like meta position for Nitrobenzene or ortho/para for halobenzene. Logged clarkstill Chemist
The effect of 1,3,5-trinitrobenzene on 1H nuclear magnetic resonance and electron paramagnetic resonance spectra of some cobalt(II) porphyrinsdoi:10.1002/chin.197344412H.ALLENO.HILLPETERJ.SADLERROBERTJ.P.WileyChemischer Informationsdienst
In order to examine the effect of solvents on the hyperfine splittings of anion radical the electron spin resonance spectra of substituted nitrobenzene anion radicals were studied. The effect of hydroxylic solvent is enhanced when the nitro group is forced out of the plane of the benzene ring ...
The chemical shift of the nitro-group in the 14N n.m.r. spectra of substituted nitrobenzenes is almost identical for ortho-, para-, and meta-isomers, thus showing that 蟺-electron conjugation has no effect. Substituents in the phenyl rin... M Witanowski,L Stefaniak,GA Webb - 《Journal...
The photolysis of isomeric (trimethylsilyl)nitrobenzenes and of tert-butylnitrobenzenes produces arylalkoxynitroxide radicals which have been studied by ESR spectroscopy. Relative values of a N suggest that the p-trimethylsilyl group exerts an overall withdrawing effect while the m-trimethylsilyl group ...