The Electron Spin Resonance of <I>o</I>-Substituted Benzophenone Ketyls

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概要

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• The ESR spectra of the potassium ketyls of d<SUB>5</SUB>-phenyl 2-methylphenyl ketone (I), phenyl 2-methylphenyl ketone (II), 2-methylphenyl 4′-<I>t</I>-butylphenyl ketone and 2-methylphenyl 3′-chlorophenyl ketone have been measured in a tetrahydrofuran solution.<BR>II gave four broad lines, and I, a single line with a smaller total width. It is considered that the ortho-substituted phenyl group is bent out of the plane of the three central bonds because of the steric hindrance of the ortho methyl group, and that then the free electron spin is accumulated at a non-substituted phenyl group—especially at the ortho-and para-positions.<BR>The findings on the other ketyls support the above hypothesis.

• 社団法人 日本化学会の論文

著者

• MARUYAMA K.

  Department of Pediatrics, Faculty of Medicine, Kagoshima University

• Tanikaga Rikuhei

  Department Of Bioscience And Biotechnology Faculty Of Science And Engineering Ritsumeikan University

• Tanikaga Rikuhei

  Department of Chemistry Faculty of Science Kyoto University

• Goto Ryozo

  Department of Chemistry Faculty of Science Kyoto University

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