• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >Dinuclear Face-Sharing Bi-octahedral Tungsten(VI) Core and Unusual Thermal Behavior in Complex Th Tungstates
【24h】

Dinuclear Face-Sharing Bi-octahedral Tungsten(VI) Core and Unusual Thermal Behavior in Complex Th Tungstates

机译：双核六面体双八面体钨（VI）核和复杂Th钨酸盐中异常的热行为

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

Two new thorium tungstates A(6)Th(6)(WO4)(14)O (A=K and Rb) were synthesized by high-temperature solid-state reactions. The structures of both phases are based on a rare dinuclear confacial bi-octahedral [W2O9](6-) core, encapsulated in a [Th6W7O46(W2O9)](32-) cage showing a cross-section geometry similar to a six-leafed lily. The adjacent cages are connected in two dimensional layers by WO4 tetrahedral linkers. Due to the dissimilarities in mutual orientations of adjacent layers in these two structures, K6Th6(WO4)(14)O crystallizes in space group of R32 while Rb6Th6(WO4)(14)O stabilizes in P$ar 6$2c. The high-temperature phase transition was observed in Rb6Th6(WO4)(14)O and investigated using high-temperature PXRD technique. The results demonstrate a very unusual thermal behavior of this compound. The Raman and IR spectra of both phases were analyzed with respect to their complex structures.
机译：通过高温固相反应合成了两个新的钨酸A A（6）Th（6）（WO4）（14）O（A = K和Rb）。两相的结构均基于稀有的双核界面双八面体[W2O9]（6-）核，该核包裹在[Th6W7O46（W2O9）]（32-）笼中，显示出类似于六叶形的截面几何形状百合。相邻的笼子通过WO4四面体接头在二维层中连接。由于这两个结构中相邻层的相互取向不同，因此K6Th6（WO4）（14）O在R32的空间群中结晶，而Rb6Th6（WO4）（14）O稳定在P $ bar 6 $ 2c。在Rb6Th6（WO4）（14）O中观察到高温相变，并使用高温PXRD技术进行了研究。结果证明了该化合物非常不寻常的热行为。分析了两个相的复杂结构的拉曼光谱和红外光谱。

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