Refined Crystal Structure of LiNH_4SO_4 Including Hydrogen Atoms in Phases II and III
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概要
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Crystal structure of LiNH_4SO_4 was refined in phase II (room temperature) and phase III (190 K) by the use of X-ray diffraction intensity with including hydrogen atoms. The least-squares calculations converged with residual parameter R = 0.0362 and 0.0378 for phases II and III, respectively. At room temperature, thermal parameters of hydrogen atoms are large and residual electron density is notable around ammonium ions. This may indicate a partial disorderness of the ammonium ions. In the monoclinic phase III, the calculation was performed with considering the effect of twin domains. In the refined superstructure, ammonium ions with hydrogen atoms are perfectly ordered. Hydrogen atoms link nitrogen and oxygen of sulphate ions.
- 社団法人日本物理学会の論文
- 1993-01-15
著者
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Mashiyama Hiroyuki
Department Of Physics Biology And Informatics Faculty Of Science Yamaguchi University
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KASANO Hironobu
Faculty of Science, Yamaguchi University
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Kasano Hironobu
Department Of Physics Faculty Of Science Yamaguchi University
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