1H and 19F nuclear magnetic relaxation studies of molecular motion in solid fluoroform.

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概要

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• Spin-lattice relaxation times of proton and fluorine nuclei in solid CHF<SUB>3</SUB> were measured by the pulsed magnetic resonance technique between 7 and 116K. In <SUP>1</SUP>H resonance, non-exponential recovery of magnetization was clearly observed. <I>T</I><SUB>1</SUB> data as well as magnetization recoveries were interpreted in terms of intramolecular magnetic dipole interactions between like spins and also between unlike spins, which are modulated by the isotropic reorientation of a whole molecule. A calculation of the temperature dependence of <I>T</I><SUB>1</SUB> was made by using an activation energy of 17kJ mol<SUP>−1</SUP> and a pre-exponential factor of 1.0×10<SUP>−16</SUP> s for the motion, yielding results in agreement with the present experimental results.

• 公益社団法人 日本化学会の論文

著者

• Eguchi Taro

  Institute Of Chemistry College Of General Education

• KISHITA Michihiko

  Institute of Chemistry,College of General Education,Osaka University

• Chihara Hideaki

  Department Of Chemistr Faculty Of Science Osaka University

• Soda Gen

  Institute of Chemistry, College of General Education, Osaka University

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