...
首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Bridgman crystal growth and structure refinement of YbPdGe and YbPtGe - Two different superstructures of the KHg2 type
【24h】

Bridgman crystal growth and structure refinement of YbPdGe and YbPtGe - Two different superstructures of the KHg2 type

机译:YbPdGe和YbPtGe的Bridgman晶体生长和结构细化-两种不同的KHg2型超结构

获取原文
获取原文并翻译 | 示例
           

摘要

Well shaped single crystals of the equiatomic germanides YbPdGe and YbPtGe were synthesized from the elements using the Bridgman technique. The samples were investigated by X-ray powder and single crystal diffraction: YbAuSn type, Imm2, a = 433.4(2), b = 2050.6(6), c = 752.6(2) pm, wR2 = 0.0723, 1551 F-2 values, 58 variables for YbPdGe and TiNiSi type, Pnma, a = 686.32(9), b = 430.47(9), c = 751.02(8) pm, wR2 = 0.0543, 379 F-2 values, 20 variables for YbPtGe. Both germanides crystallize with different superstructure variants of the KHg2 type, resulting from different stacking of the puckered Pd3Ge3 and Pt3Ge3 hexagons. While only Pt-Ge interactions occur in the [PtGe] polyanionic network of YbPtGe, weak interlayer Pd-Pd (297 pm) and Ge-Ge (275 pm) interactions occur in YbPdGe. The crystal chemical peculiarities are discussed in the light of the different superstructure formed.
机译:使用Bridgman技术从元素合成了等原子锗化物YbPdGe和YbPtGe的形状良好的单晶。通过X射线粉末和单晶衍射研究了样品:YbAuSn型,Imm2,a = 433.4(2),b = 2050.6(6),c = 752.6(2)pm,wR2 = 0.0723,1551 F-2值,YbPdGe和TiNiSi类型的58个变量,Pnma,a = 686.32(9),b = 430.47(9),c = 751.02(8)pm,wR2 = 0.0543,379 F-2值,YbPtGe的20个变量。两种锗化物都具有不同的KHg2型上层结构变体结晶,这是由于起皱的Pd3Ge3和Pt3Ge3六边形的堆积不同而引起的。在YbPtGe的[PtGe]聚阴离子网络中仅发生Pt-Ge相互作用,而在YbPdGe中发生弱的层间Pd-Pd(297 pm)和Ge-Ge(275 pm)相互作用。根据所形成的不同上部结构,讨论了晶体的化学特性。

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