Synthesis, characterization, and X-ray powder structure of K2ZrGe2O7
Synthesis, characterization, and X-ray powder structure of K2ZrGe2O7
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K2ZrGe2O7的合成、表征及X射线粉末结构
DOI：
10.1006/jssc.1999.8332
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发表时间：
1999
影响因子：
5.4
通讯作者：
A. Clearfield
中科院分区：
文献类型：
--
作者：
P. Pertierra;M. A. Salvadó;S. García‐Granda;Camina Trabajo;J. R. García;A. Bortun;A. Clearfield
在180°C下水热条件下由丙酸锆、GeO 2和KOH的混合物合成焦锗酸锆钾K2 ZrGe 2 O 7。通过直接方法和傅立叶分析，从内部X射线粉末数据中求解晶体结构。结构的细化受到Rietveld全图案技术的影响。该化合物属单斜晶系，空间群C2/c，a=9.9619（2）A，B=5.5578（1）A，c=12.9555（3）A，β=105.169（1）°，Z=4.其结构与α-磷酸锆非常相似。Zr（HPO 4）2·H2O，不同之处在于层通过焦锗酸酯基团交联以形成三维晶格。K+离子的交换是最小的，因为它们被强烈地保持在狭窄的隧道范围内。讨论了这种新合成的焦锗酸盐与500°C水热法制备的焦锗酸钠锆和Na 3 H（GeO 4）2的关系。
A potassium zirconium pyrogermanate, K2ZrGe2O7, was synthesized hydrothermally at 180°C from a mixture of zirconium propionate, GeO2, and KOH. The crystal structure was solved from in-house X-ray powder data by direct methods and Fourier analysis. Refinement of the structure was effected by the Rietveld full-pattern technique. The compound is monoclinic, space group C2/c, a=9.9619(2) A, b=5.5578(1) A, c=12.9555(3) A, β=105.169(1)°, Z=4. The structure is remarkably like that of α-zirconium phosphate. Zr(HPO4)2·H2O, except that the layers are crosslinked by the pyrogermanate group to form a three-dimensional lattice. Exchange of the K+ ions is minimal as they are strongly held within the confines of narrow tunnels. The relationship of this newly synthesized pyrogermanate to a sodium zirconium pyrogermanate prepared hydrothermally at 500°C and Na3H(GeO4)2 is discussed.
影响因子：
8.6
作者：
Behrens, EA;Poojary, DM;Clearfield, A
通讯作者：
Clearfield, A