Chemical States and Lattice Dynamics of α-Diimine Fe^<2+> Complexes Intercalated into γ-Zirconium Phosphate

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概要

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• The α-diimine Fe^<2+> complexes, [Fe(phen)_3]^<2+>, [Fe(bpy)_3]^<2+>, and [Fe(terpy)_2]^<2+>, (phen : 1,10-phenanthroline, bpy : 2,2'-bipyridyl, terpy : α, α', α"-tripyridine) were intercalated into zirconium dihydrogenphosphate phosphate dihydrate (γ-zirconium phosphate, γ-ZrP), Zr(PO_4)(H_2PO_4)・2H_2O. The rate of the intercalation, the molar ratio of Fe to Zr, was found to be 3.82-7.76%. Mossbauer spectra indicated that one part of [Fe(phen)_3]^<2+> and [Fe(bpy)_3]^<2+> changed from a low-spin Fe^<2+> to high-spin Fe^<2+> state on intercalation, but [Fe(terpy)_2]^<2+> did not change in chemical state. The lattice dynamics of the complexes and the intercalation compounds were investigated in terms of the temperature dependence of the area intensity on the Mossbauer spectra. A linear relationship was established for all the complex salts and the intercalation compounds investigated between the ln[A(T)/A(82)] and absolute temperature, T, where A(T) and A(82) show the intensities of a doublet at T and 82 K of the Mossbauer spectra, respectively. From the slope of the linear relation, the Θ^2M values, which were derived based on the Debye approximation of lattice vibration, were evaluated for the complex salts and the intercalation compounds. The Fe^<2+> complexes showed Θ^2M values of 1.27 to 2.32×10^6,whereas the intercalation compounds showed very similar values to each other, ranging from 2.19 to 2.39×10^6,irrespective of different α-diimine ligands. The results were explained in terms of the characteristics layered structure of zirconium phosphate, and by the tight bond between the α-diimine Fe^<2+> complexes and the host γ-ZrP.

• 公益社団法人日本薬学会の論文
• 2000-11-01

著者

• Endo Kazutoyo

  Department Of Physical Chemistry Showa Pharmaceutical University

• 本田 千恵

  Pharmaceutical Sciences Mukogawa Women's University

• Honda Chikako

  Departments Of Physical Chemistry Showa Pharmaceutical University

• Honda Chikako

  Department Of Applied Biological Chemistry Graduate School Of Agricultural And Life Sciences The Uni

• Matsumoto Ken-ichiro

  Department Of Physical Chemistry Showa Pharmaceutical University

• Matsumoto Ken-ichiro

  Departments Of Physical Chemistry Showa Pharmaceutical University

• 神崎 〓

  Showa Pharmaceutical University

• Honda C

  School Of Pharmaceutical Sciences Mukogawa Women's University

• Saito I

  Departments Of Physical Chemistry Showa Pharmaceutical University

• Katada M

  Radioisotope Center Tokyo Metropolitan University

• Katada Motomi

  Radioisotope Research Center Tokyo Metropolitan University

• Endo K

  Faculty Of Pharmaceutical Sciences Hoshi University

• Kanzaki Yasushi

  Analytical Chemistry Showa College Of Pharmaceutical Sciences

• Saito Ikuko

  Department Of Chemistry Faculty Of Science Kyushu University

• Kanzaki Y

  Showa Pharmaceutical Univ. Tokyo Jpn

• KATADA Motomi

  Radioisotope Center, Tokyo Metropolitan University

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