Structure Determination of the TMA_2HgCl_4 by X-Ray Diffraction and Maximum Entropie Method

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概要

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• The crystal structure of [N(CH_3)_4]_2HgCl_4 has been studied by single crystal X-ray diffraction, the structure is orthorhombic Pnma with lattice parameters 12.419(7), b = 9.068(4), and c = 15.684(2)Å at room temperature. Each TMA cation disorderly occupies two orientations (TMA is tetramethylammonium). Refinements using restrictions of the non-crystallographic tetrahedral point group for the TMA cations and refinements without restrictions are used to show that TMA has tetrahedral symmetry at all temperatures. The HgCl_4 anions are distorted, but the distortions are independent of the temperature.

• 社団法人日本物理学会の論文
• 2003-06-15

著者

• Salah A

  Univ. Sfax Sfax Tun

• AMAMI Mongi

  Laboratory of Crystallography, University of Bayreuth

• SALAH Abdelhamid

  Laboratory of material Sciences and Environnement, University of Sfax

• Amami M

  Univ. Sfax Sfax Tun

関連論文

• Structure Determination of the TMA_2HgCl_4 by X-Ray Diffraction and Maximum Entropie Method
• Structure Determination of the TMA_2HgCl_4 by X-Ray Diffraction and Maximum Entropie Method
• H-Bond Effect on the Phase Transitions in [NH_(CH_3)_n]_2HgCl_4 and Related Compounds(Condensed Matter : Structure, Mechanical and Thermal Properties)

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