Crystal structure of celadonite from the electron diffraction data

Zhukhlistov AP

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Crystal structure of celadonite from the electron diffraction data

机译：从电子衍射数据看青瓷的晶体结构

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The crystal structure of the dioctahedral celadonite mica 1M (space group C2/m; R, 2.98%; 184 unique reflections) is refined from the oblique-texture electron diffraction patterns obtained with the use of imaging plates. The maximum characterizing the location and potential of the hydrogen atom of the hydroxyl group oriented into the unoccupied trans octahedron at an angle of 4.4 degrees with respect to the ab plane is revealed from the difference Fourier-potential syntheses. The O-H interatomic distance is equal to 0.98 angstrom. The superstructure reflections observed in the selected-area electron diffraction patterns for a number of particles arise from the superposition of two cells, namely, the main cell with a broken base-centered symmetry and the base-centered supercell with the triple parameter a. These reflections are caused by the ordered distribution of the trivalent and divalent cations Fe and Mg over the octahedral cis positions. (C) 2005 Pleiades Publishing, Inc.

机译：通过使用成像板获得的斜纹电子衍射图精制了二八面体青云母云母1M（空间群C2 / m; R，2.98％; 184个唯一反射）的晶体结构。从差傅立叶-电位合成中揭示了表征相对于ab平面以4.4度角定向成未占据的反八面体的羟基的氢原子的位置和电势的最大值。 O-H原子间距离等于0.98埃。在选定区域电子衍射图中观察到的许多粒子的超结构反射是由两个单元的叠加产生的，即，具有破裂的基心对称性的主单元和具有三重参数a的基心超级单元。这些反射是由三价和二价阳离子Fe和Mg在八面体顺式位置上的有序分布引起的。（C）2005年Pleiades Publishing，Inc.

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《Crystallography reports》 |2005年第6期|共5页
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Zhukhlistov AP;
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正文语种 eng
中图分类晶体学;
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MICAS;

机译：MICAS;

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1. Crystal structure of celadonite from the electron diffraction data [J] . Zhukhlistov AP Crystallography reports . 2005,第6期

机译：从电子衍射数据看青瓷的晶体结构
2. Fiber diffraction as a useful supplement to single-crystal electron diffraction data in the direct three-dimensional structure analysis of polymers [J] . Dorset DL, McCourt MP Journal of Macromolecular Science. Physics . 1997,第2期

机译：纤维衍射在聚合物的直接三维结构分析中作为单晶电子衍射数据的有用补充
3. Fiber diffraction as a useful supplement to single-crystal electron diffraction data in the direct three-dimensional structure analysis of polymers [J] . Dorset DL, McCourt MP Journal of Macromolecular Science. Physics . 1997,第2期

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4. STRUCTURES OF ZEOLITES ANDMESOPOROUS CRYSTALS DETERMINED BYELECTRON DIFFRACTION AND HIGH-RESOLUTION ELECTRON MICROSCOPY [C] . Osamu Terasaki NATO Advanced Study Institute on Electron Crystallography: Novel Approaches for Structure Determination of Nanosized Materials . 2006

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Crystal structure of celadonite from the electron diffraction data

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