Zeeman Study on Nuclear Quadrupole Resonances in AsI_3 and AsI_3・3S_8
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概要
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Principal axis systems and asymmetry parameter of the electric field gradient tensors were determined by studying Zeeman effect of nuclear quadrupole resonances of As^<75> and I^<127>. The iodine resonance in AsI_3 showed that there are three principal axis system whose z axes form a trigonal pyramid having an apex angle of 91.7°±2.5°. The fact that this angle did not agree with the bond angle of 88°02' supports the mechanism of resonance switching of the bond. The arsenic resonance in AsI_3 has only one principal axis system whose z axis is along the trigonal symmetry axis of arsenic tri-iodide molecule. The asymmetry parameter obtained from Zeeman study was nearly zero. The iodine resonance in AsI_3・3S_8 also showed that there are three principal axis systems. This fact well agrees with the result from X-rays that the most possible crystal structure of AsI_3・3S_8 is C^1_<3v> . Three z axes are parallel to the edge of a trigonal pyramid with an apex angle of 101.7°±0.5° which is close to the bond angle 100°±2° (∠I-As-I) of AsI_3 molecule in gaseous state. The electric field gradient tensor of arsenic resonance in AsI_3・3S_8 was nearly axial symmetric about the trigonal symmetry axis of the molecule.
- 社団法人日本物理学会の論文
- 1958-08-05
著者
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ABE Yoshihito
Department of Physics, Tokyo University of Education
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Abe Yoshihito
Department Of Applied Physics Tokyo University Of Education
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Abe Yoshihito
Department Of Physics Tokyo University Of Education
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- Structure of Nuclear Quadrupole Resonance Line : II. Solid Bromine
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