Assignments of the <SUP>35</SUP>Cl Nuclear Quadrupole Resonance Spectra in Multichlorobenzenes by the Measurement of the Zeeman Effect
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概要
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Assignments of the <SUP>35</SUP>C1 nuclear quadrupole resonance spectra have been made for some multichlorobenzenes by the Zeeman studies of single crystals. Three resonance lines in 1, 3, 5-trichlorobenzene, have been assigned, in the order of increasing frequency, to Cl<SUB>3</SUB>, Cl<SUB>1</SUB> and Cl<SUB>5</SUB> designated by Milledge and Pant in their X-ray study ; two lower frequencies in 1, 2, 3, 4-tetrachlorobenzene to Cl<SUB>1</SUB> and Cl<SUB>4</SUB> and two higher ones to Cl<SUB>2</SUB> and Cl<SUB>3</SUB>; and in pentachlorobenzene, the second highest frequency to the chlorine atom at the para position with respect to the single hydrogen atom. The shifts of the resonance frequencies have been accounted for in terms of the induction effect. It is likely that the ortho effect is produced by the direct field arising from the charges on the neighboring atoms rather than the indirect one propagated through the chemical bonds. The interpretation of the three frequencies in 1,3,5-trichlorobenzene has also been attempted from the viewpoint of the intermolecular effect. It has been suggested that an induction effect independent of the directions takes place in this crystal among the neighboring molecules.
- 社団法人 日本化学会の論文
著者
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Itoh Koichi
Department Of Cardiology Hitachiomiya Saiseikai Hospital
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Toyama Masaharu
Department Of Chemistry Faculty Of Science University Of Tokyo
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Kyono Saburo
Department of Chemistry Faculty of Science The University of Tokyo
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Morino Y.
Department of Chemistry Faculty of Science The University of Tokyo
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Toyama Masaharu
Department of Chemistry Faculty of Science The University of Tokyo
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Itoh Koichi
Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
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Itoh Koichi
Department of Chemistry Faculty of Science The University of Tokyo
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