...
  • 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 >Nd3NCl6 and Nd4NS3Cl3: Two derivatives of neodymium nitride with discrete units of edge-shared ([N2Nd6](12+)) and isolated [NNd4](9+) tetrahedra, respectively [German]
【24h】

Nd3NCl6 and Nd4NS3Cl3: Two derivatives of neodymium nitride with discrete units of edge-shared ([N2Nd6](12+)) and isolated [NNd4](9+) tetrahedra, respectively [German]

机译：Nd3NCl6和Nd4NS3Cl3：氮化钕的两种衍生物，分别具有边缘共享的离散单元（[N2Nd6]（12+））和分离的[NNd4]（9+）四面体[德语]

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

For the preparation of Nd3NCl6 (orthorhombic, Pbca; a = 1049.71(8), b = 1106.83(8), c = 1621.1(1) pm; Z = 8) and Nd4NS3Cl3 (hexagonal, P6(3)mc; a = 922.78(6), c = 683.06(4) pm; Z = 2) elemental neodymium is reacted with sodium azide (NaN3), neodymium trichloride (NdCl3) and in the case of Nd4NS3Cl3 additionally with sulfur in evacuated silica tubes at 750 degrees C (Nd3NCl6) and 850 degrees C (Nd4NS3Cl3), respectively. Thereby the hydrolysis-sensitive nitride chloride forms coarse, brick-shaped single crystals, while those of the insensitive nitride sulfide chloride emerge hexagonally and pillar-shaped. The pale violet compounds each exhibit [NNd4] tetrahedra as characteristic structural features, which are connected via a common edge to form discrete pairs of tetrahedra ([N2Nd6](12+)) in Nd3NCl6 and are present in Nd4NS3Cl3 even as isolated [NNd4](9+) units. Their three-dimensional cross-linkage as well as the charge-balance regulation proceed solely through Cl- anions in the nitride chloride, but through equimolar amounts of S2- and Cl- anions in the nitride sulfide chloride. The crystal structure of Nd3NCl6 shows three crystallographically independent Nd3+ cations, each of which is eightfold coordinated by anions (Nd1: 2 N3- + 6Cl(-); Nd2 and Nd3: 1 N3- + 7 Cl-). Only two different kinds of Nd3+ underlie the structure of Nd4NS3Cl3: Nd1 is surrounded by one N3-, Six S2- and three Cl- with CN = 10, whereas one N3-. four S2- and three Cl- only are coordinating Nd2 with CN = 8. [References: 41]
机译：用于制备Nd3NCl6（斜方晶，Pbca; a = 1049.71（8），b = 1106.83（8），c = 1621.1（1）pm; Z = 8）和Nd4NS3Cl3（六方，P6（3）mc; a = 922.78 （6），c = 683.06（4）pm; Z = 2）元素钕与叠氮化钠（NaN3），三氯化钕（NdCl3）发生反应，在Nd4NS3Cl3的情况下，在750°C的真空石英管中与硫反应（ Nd3NCl6）和850摄氏度（Nd4NS3Cl3）。因此，对水解敏感的氮化物氯化物形成粗糙的砖状单晶，而对不敏感的氮化物硫化物氯化物的晶体呈六角形和柱状。淡紫色化合物各自显示[NNd4]四面体作为特征结构特征，它们通过公共边缘连接以在Nd3NCl6中形成离散的四面体对（[N2Nd6]（12+）），甚至在分离时也存在于Nd4NS3Cl3中。 （9+）个单位。它们的三维交联以及电荷平衡调节仅通过氮化物氯化物中的Cl-阴离子进行，但是通过氮化物硫化物氯化物中的等摩尔量的S2-和Cl-阴离子进行。 Nd3NCl6的晶体结构显示了三个晶体学独立的Nd3 +阳离子，每个阳离子均由阴离子（Nd1：2 N3- + 6Cl（-）; Nd2和Nd3：1 N3- + 7 Cl-）配位八倍。 Nd4NS3Cl3的结构只有两种不同的Nd3 +：Nd1被一个N3-，六个S2-和三个Cl-（CN = 10）包围，而一个N3-。仅四个S2-和三个Cl-与CN = 8配位的Nd2。[参考文献：41]

著录项

相似文献

  • 外文文献
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