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Crystal structure of silver metagermanate, Ag_2GeO_3

机译：偏锗银Ag_2GeO_3的晶体结构

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摘要

The crystal structure of Ag_2GeO_3 was determined from laboratory X-ray powder diffraction data (Cu Kα_1) using the Rietveld method. The title compound is orthorhombic with space group P2_12_12_1, Z=4, unit-cell dimensions a = 0.463 09(1) nm, b = 0.713 93(2) nm, and c= 1.040 79(3) nm, and V=0.344 10(2) nm~3. The final reliability indices were R_(wp)=5.58%, S=1.26, R_p=4.20%, R_B = 0.67%, and R_F-0.35%. The GeO_4 tetrahedra form infinite chains of [Ge_2O_6] along the a axis, with two tetrahedra per identity period of 0.463 nm. Individual chains are connected by Ag atoms, one-half of which are almost linearly coordinated by two O atoms and the rest are coordinated by three O atoms. The relatively short Ag-Ag distances of 0.299 to 0.339 nm indicate Ag(I)-Ag(I) interaction. This compound is isostructural with Ag_2SiO_3.
机译：使用Rietveld方法根据实验室X射线粉末衍射数据（CuKα_1）确定Ag_2GeO_3的晶体结构。标题化合物为正交晶，空间组为P2_12_12_1，Z = 4，晶胞尺寸a = 0.463 09（1）nm，b = 0.713 93（2）nm，c = 1.040 79（3）nm，V = 0.344 10（2）nm〜3。最终可靠性指标为R_（wp）= 5.58％，S = 1.26，R_p = 4.20％，R_B = 0.67％和R_F-0.35％。 GeO_4四面体沿着a轴形成[Ge_2O_6]的无限链，每个同一周期的两个四面体为0.463 nm。各个链由Ag原子连接，其中一半几乎由两个O原子线性配位，其余的则由三个O原子配位。 0.299至0.339 nm的相对较短的Ag-Ag距离表明Ag（I）-Ag（I）相互作用。该化合物与Ag_2SiO_3同构。

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  • 来源
    《Powder diffraction》 |2010年第1期|p.15-18|共4页
  • 作者

    Hirokazu Kurachi; Tomoyuki Iwata; Shuxin Ouyang; Jinhua Ye; Koichiro Fukuda;

  • 作者单位

    Department of Environmental and Materials Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan;

    rnDepartment of Environmental and Materials Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan;

    rnPhotocatalytic Material Center, National Institute for Materials Science (NIMS), Ibaraki 305-0047, Japan;

    rnPhotocatalytic Material Center, National Institute for Materials Science (NIMS), Ibaraki 305-0047, Japan;

    rnDepartment of Environmental and Materials Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    silver germanium oxide; X-ray powder diffraction; rietveld method; Ag-Ag interaction; photocatalyst;

    机译：氧化锗银X射线粉末衍射;rietveld方法Ag-Ag相互作用;光触媒;

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