TEMPERATURE EFFECTS ON THE ROTATIONAL MOTION OF THE COORDINATED D_2O MOLECULES IN NaBr AND KBr AQUEOUS SOLUTIONS STUDIED BY NMR SPECTEROSCOPY

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概要

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• The spin-lattice relaxation times(T_1)of D and^<17>O nuclei of coordinated heavy water(D_2O)molecules for Na^+ and K^+ in sodium bromide and potassium bromide dilute aqueous solutions were measured in the range of 5-50℃ by means of NMR. The spin-lattice relaxation rates(R_1=1/T_1)varied linearly with the concentration up to 1 mol/kg at a given temperature. The parallel(D)and the perpendicular(^<17>O)rotational correlation times of coordinated D_2O molecules for Na^+ and K^+ were determined. The ratio τ(D)/τ(^<17>O)of the rotational correlation times of the coordinated D_2O molecules was larger and smaller than unity for Na^+ and K^+, respectively, and was practically independent of temperature, which indicated that the rotational anisotropies of the coordinated D_2O molecules was almost temperature independent.

• 社団法人日本材料学会の論文
• 1996-12-15

著者

• Shimizu A

  Department Of Bioengineering Faculty Of Engineering Soka University

• Shimizu Akio

  Department Of Bioengineering Faculty Of Engineering Soka University

• Taniguchi Yoshihiro

  Department Of Chemistry Faculty Of Science And Engineering Ritsumeikan University

• FUMINO Koichi

  Department of Chemistry, Faculty of Sciience and Engineering, Ritsumeikan University

• Fumino Koichi

  Department Of Chemistry Faculty Of Sciience And Engineering Ritsumeikan University

• Taniguchi Yoshihiro

  Department Of Applied Chemistry Faculty Of Science And Engineering Ritsumeikan University

• Shimizu Akio

  Department of Bioengincering Facutly of Engineering,Soka University

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