Molecular motion in CsH(CHCl2 COO)2 as studied by 35Cl nuclear quadrupole resonance and dielectric measurements

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タイトル別名
  • Molecular Motion in CsH(CHCl<SUB>2</SUB>COO)<SUB>2</SUB> as Studied by <SUP>35</SUP>Cl Nuclear Quadrupole Resonance and Dielectric Measurements
  • Erratum: “Molecular Motion in CsH(CHCl<sub>2</sub>COO)<sub>2</sub> as Studied by <sup>35</sup>Cl Nuclear Quadrupole Resonance and Dielectric Measurements”

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説明

35Cl nuclear quadrupole resonance study was carried out on CsH(CHCl2COO)2. The Zeeman effect experiment showed that this crystal belongs to a triclinic system with two crystallographically nonequivalent dichloroacetate anions. From the measurement of the temperature dependence of the resonance frequencies and the spin-lattice relaxation times of all the four resonance lines it was found that the CHCl2 groups in one of the two carboxylate anions undergo internal rotation about C–C bonds below room temperature with the activation energy of 3.97 kcal/mol. Dielectric behavior was consistent with the motion. The nuclear quadrupole resonance frequencies of 17 other chloroacetates are also reported.

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