Possible Origin of the Isotope Effect on the Phase Transition of K_3(D,H)(SO_4)_2

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概要

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• Structural data of K,H(SO.). and K,D(SQ.)2 reported by Noda et at. [J. Phys. Soc.Jpn. 59 (1990) 2809 and ibid. 3249] are precisely examined in order to investigate thepossible origin of the isotope effect in a hydrogen bond material. The SO. molecule isslightly distorted from a regular tetrahedron. The distortion is explained by thedisplacement of the sulfur atom as well as that of the oxygen atom which is in chargeof forming the hydrogen bond. The size of the SO. molecule in the D-compound isslightly larger than that in the H-compound, but the difference seems to be marginallysmall. The major geometrical difference is only seen in the hydrogen bond length 71?...In addition, electron transfer between hydrogen and oxygen atoms with oppositedirections was found. The difference of the ionicity of H and D atoms is considered tobe the origin of the difference of the bond length 7S,)..isotope effect, hydrogen bond, phase transition, X-ray experiment, K,[1(SO.).

• 社団法人日本物理学会の論文
• 1991-01-15

著者

• Kasatani Hirofumi

  Kwansei Gakuin University

• Noda Yukio

  Chiba University

関連論文

• Possible Origin of the Isotope Effect on the Phase Transition of K_3(D,H)(SO_4)_2
• Incommensurate Phase Transition in 4,4-Dichlorodiphenyl Sulfone

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