Synthesis and structure determination of new layered perovskite compounds, ALaTa2O7 and ACa2Ta3O10(A = Rb, Li)
Synthesis and structure determination of new layered perovskite compounds, ALaTa2O7 and ACa2Ta3O10(A = Rb, Li)
复制标题
新型层状钙钛矿化合物ALaTa2O7和ACa2Ta3O10(A = Rb, Li)的合成及结构测定
DOI：
10.1039/jm9960601067
复制
发表时间：
1996
影响因子：
--
通讯作者：
Mineo Sato
中科院分区：
文献类型：
--
作者：
K. Toda;Mineo Sato
通过固相反应直接合成了新型层状钙钛矿化合物RbLaTa2O7和RbCa2Ta3O10，其Rb+离子可以进行离子交换。锂离子交换化合物LiLaTa2O7和LiCa2Ta3O10也可以通过铷化合物与LiNO3熔盐的离子交换反应合成。这些化合物的晶体结构已通过粉末 X 射线衍射图的 Rietveld 分析确定。这些化合物的晶体结构与相应的铌酸盐化合物的晶体结构类似。这些化合物是 Dion-Jacobson 系列的新成员，通式为 A[Mn– 1BnO3n+ 1]（A = 碱金属），n= 2 和 3。
New layered perovskite compounds of RbLaTa2O7 and RbCa2Ta3O10, whose Rb+ ions can be ion-exchanged have been synthesized directly by a solid-state reaction. Lithium ion-exchanged compounds, LiLaTa2O7 and LiCa2Ta3O10, have also been synthesized by ion-exchange reactions of the rubidium compounds with LiNO3 molten salt. The crystal structures of these compounds have been determined by Rietveld analysis of their powder X-ray diffraction patterns. The crystal structures of these compounds are analogous to those of the corresponding niobate compounds. These compounds are new members of the Dion–Jacobson series with the general formula A[Mn– 1BnO3n+ 1](A = alkali metal), with n= 2 and 3.