Li2ZnI4: A neutron powder study
Li2ZnI4: A neutron powder study
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DOI：
10.1016/0022-4596(90)90050-8
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发表时间：
1990-08
影响因子：
3.3
通讯作者：
A. Pfitzner;H. Lutz;J. Cockcroft
中科院分区：
文献类型：
--
作者：
A. Pfitzner;H. Lutz;J. Cockcroft
用中子粉末衍射法测定了298 K下Li_2ZnI_4的晶体结构。用Rietveld方法对橄榄石型结构（空间群Pnma，Z= 4，a= 1480.3（9），B= 856.0（2），c= 701.2（1）pm）进行了精修，得到最终的RI = 5.48%。在接近理想的六方密堆积碘离子排列中，Li位于八面体中，Zn位于四面体空隙中。除了Zn I距离显着缩短之外，获得的键长与晶体半径的预期一致。
The crystal structure of Li2ZnI4was determined by means of neutron powder diffraction studies at 298 K. The olivine-type structure (space groupPnma,Z= 4,a= 1480.3(9),b= 856.0(2),c= 701.2(1) pm) was refined by the Rietveld method to a finalRI= 5.48%. In a nearly ideal hexagonal close-packed iodide ion arrangement, Li is located in octahedral, and Zn, in tetrahedral voids, respectively. Apart from the ZnI distances, which are significantly shortened, the bond lengths obtained are as expected from the crystal radii.