BaTl (3) 的合成,结构和结合:在层中,集群和经典结合之间发生了不寻常的竞争
Dong-Kyun Seo1, John D Corbett
1Ames Laboratory-DOE and Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA.
Journal of the American Chemical Society
|January 17, 2002
概括
合成了一种新的和化合物,BaTl(3),揭示了一种新的晶体结构. 这种结构具有独特的层,突出了离子-离子相互作用在化学结合中的作用.
科学领域:
- 固态化学 固态化学
- 材料科学是一种材料科学.
- 晶体学 晶体学是指结晶学.
背景情况:
- 的化合物家族表现出多样化的结构动机.
- 了解结构,粘合和电子特性之间的关系对于材料发现至关重要.
研究的目的:
- 为了合成和表征一种新的化合物,BaTl(3).
- 阐明BaTl的晶体结构和粘合特性.
- 调查阴离子-离子相互作用在观察到的结合中的作用.
主要方法:
- 合成BaTl(3) 化合物. 的合成.
- 物理属性测量. 物理属性测量.
- 电子结构计算.
主要成果:
- 新的BaTl(3) 化合物结晶在Cmcm结构中,这是Ni(3) Sn家族中的一种新型中间体.
- 结构包括层,在面部共享的八面体集群中形成双中心键.
- 价值电子度 (VEC) 分析表明,塔层具有二维性质.
- 由于塔层的独特几何结构,观察到集群内部和集群内部键之间的不寻常竞争.
结论:
- BaTl(3) 代表了Ni(3) Sn家族中的一个新的结构类型.
- 阴离子 - 阴离子相互作用在阴离子基结构内的结合竞争中发挥着重要作用.
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