Hot-Atom Chemistry of Bromine. IV. Chemical Effects of <SUP>81</SUP>Br(n,γ)<SUP>82g</SUP>Br, <SUP>81</SUP>Br(n,γ)<SUP>82m</SUP>Br and <SUP>82m</SUP>Br(I. T.)<SUP>82</SUP>Br Excitation in Antimony Tribromide and Benzene System

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概要

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• Antimony tribromide and a molecular compound between antimony tribromide and benzene (2:1) have been irradiated to provide <SUP>82m</SUP>Br sources. The results obtained by the dissolution of the irradiated molecular compound, by means of which technique the chemical effects of <SUP>81</SUP>Br(n,γ)<SUP>82g</SUP>Br and <SUP>82m</SUP>Br(I.T.)<SUP>82</SUP>Br were determined separately, had shown very low organic yields from either (n,γ) or (I.T.) excitation. The reaction of <SUP>82m</SUP>Br(I.T.)<SUP>82</SUP>Br in benzene showed a growth in the organic yields. Moreover, the organic yield of <SUP>82</SUP>Br was lower when the system was frozen than when it was stored as a liquid. These results are explained by assuming that, in the frozen system, the antimony tribromide (<SUP>82m</SUP>Br) forms a molecular compound with the benzene. The higher organic yields in the frozen systems than those in the molecular compound itself must be due to the formation of free bromine (<SUP>82m</SUP>Br), which turns out to be an organic radiobromide. The hydrolytic behavior of the irradiated antimony tribromide and the molecular compound supports the idea of the presence of free bromine (<SUP>82m</SUP>Br) at the end of the irradiation.

• 公益社団法人 日本化学会の論文

著者

• ARATONO Yasuyuki

  Department of Chemistry, Japan Atomic Energy Research Institute

• Shinomiya Chiro

  Department of Industrial Chemistry, Faculty of Engineering, Kumamoto University

• Kishikawa Toshiaki

  Department of Industrial Chemistry, Faculty of Engineering, Kumamoto University

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