Chemical Shift, Relaxation Time, and Electric Quadrupole Coupling in Alkali Halides

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概要

• 論文の詳細を見る

• Chemical shift and spin lattice relaxation times are measured for Cl^<35> in all the alkali chloride crystals and for Br^<81> and I^<127> in some of the halides. These measured values cannot be explained by using Kondo-Yamashita's theory alone which takes into accunt the effect of overlap between the central ion and the nearest neighbors. For the chemical shift, itseems that the overlap with the second nearest neighbors is an essential cause of the discrepancy and that the covalent and the electrostatic effects are rather small. If these conclusions are admitted, there must be a large chemical shift (about -2〜-3x1O^4) of chlorine ion in aqueous solution relative to the free chlorine ion. A model combining the electrostatic and the overlap effect is proposed to explain reasonably the relaxation times in the crystals. The electric quadrupole coupling in free molecules of alkali halides is also discussed from the present viewpoint. The combination of the electrostatic and the overlap effects seems to give a reasonable explanation for the observed values.

• 社団法人日本物理学会の論文
• 1964-01-05

著者

• Yamagata Yukio

  Department Of Physics Faculity Of Science Kanazawa University

• Yamagata Y.

  Department of Physics, Faculity of Science, Kanazawa University

関連論文

• Nuclear Magnetic Resonance Studies of Iodine Ions in Aqueous Solution
• The Electric Quadrupole Splitting of the Nuclear Magnetic Resonance Lines of Sodium in a Single Crystal of Na_2S_2O_3・5H_2O
• Nuclear Magnetic Resonance Experiments of I^ in KI
• Nuclear Magnetic Resonance Experiments on Ammonium Halides, : II Halogen Nuclear Magnetic Resonance
• Chemical Shift, Relaxation Time, and Electric Quadrupole Coupling in Alkali Halides
• Nuclear Magnetic Resonance of RbBr

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