...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Composition and Crystal Structure of SmSb2O4Cl Revisited - and the Analogy of Sm1.5Sb1.5O4Br
【24h】

Composition and Crystal Structure of SmSb2O4Cl Revisited - and the Analogy of Sm1.5Sb1.5O4Br

机译：SMSB2O4CL的组成和晶体结构重新判断 - SM1.5SB1.5O4BR的类比

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The quaternary halide-containing samarium(III) oxidoantimonates(III) Sm1.3Sb1.7O4Cl and Sm1.5Sb1.5O4Br were synthesized through solid-state reactions from the binary components (Sm2O3, Sb2O3 and SmX3, X = Cl and Br) at 750 degrees C in evacuated fused silica ampoules. They crystallize tetragonally in the space group P4/mmm, like the basically isotypic bismuthate(III) compounds SmBi2O4Cl and SmBi2O4Br, but show larger molar volumes and therefore contradict an ideal composition of "SmSb2O4X" (X = Cl and Br). Both single-crystal X-ray diffraction and quantitative electron-beam microprobe analysis revealed the actual compositions of the investigated antimony(III) compounds, which can be understood as heavily Sm3+-doped derivatives of "SmSb2O4X" hosts at the Sb3+ site. (Sm1)(3+) is coordinated eightfold by oxygen atoms in the shape of a cube. The mixed-occupied (Sb/Sm2)(3+) cation has four oxygen atoms and four halide anions as neighbors forming a square antiprism. The oxygen atoms and anions establish alternating layers parallel to the ab-plane, which alternate when stacked along [001].
机译：通过在750的二元组分（SM2O3，SB2O3和SMX3，X = Cl和Br）的固态反应，合成含季卤化钐（III）SM1.3SB1.7O4Cl和SM1.5SB1.5O4BR。750 Degrapta融合熔融二氧化硅安瓿中的C度C.它们在空间组P4 /毫米中结晶四方，如基本同样的异型铋（III）化合物SMBI2O4CL和SMBI2O4BR，但显示出较大的摩尔体积，因此与“SMSB2O4X”（X = Cl和BR）相矛盾。单晶X射线衍射和定量电子束微探测分析都揭示了研究的锑（III）化合物的实际组成，其可以理解为SB3 +位点的“SMSB2O4x”宿主的重大SM3 +掺杂衍生物。 （SM1）（3+）由立方体形状的氧原子协调八倍。混合占（Sb / Sm 2）（3+）阳离子具有四个氧原子和四个卤化物阴离子，作为形成方向性的邻居。氧原子和阴离子建立平行于AB平面的交替层，当沿着沿[001]时交替。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号