关于Xenon的反 prismatic 协调: 氧化八化的结构 (VI)
概括
确定了八酸的晶体结构,揭示了单独的 (NO+) 和八酸 (VIII) ((XeF8) 2-) 离子. 这种离子是离子.
科学领域:
- 无机化学 无机化学
- 固态化学 固态化学
- 晶体学 晶体学是指结晶学.
背景情况:
- 贵族气体化合物,特别是涉及的化合物,由于其独特的结合和反应性,引起了极大的兴趣.
- 了解这些化合物的结构特征,可以深入了解化学结合理论和高价值物种的行为.
研究的目的:
- 为了阐明二八化的晶体结构 (((VI) (2NOF . (XF6).XF6).XF6).XF6).XF6).XF6).XF6).XF6).XF6.XF6.XF6.XF6.XF.
- 描述八化酸 (VIII) 离子的几何和结合.
- 调查观察到的结构对单对排斥的理论模型的影响.
主要方法:
- 使用单晶X射线衍射来确定晶体结构.
- 晶体结构使用对照方法进行了精炼,以R指数=0.046和加权R指数=0.042.
- 格子参数,空间组 (Pnma),密度和原子位置被精确确定.
主要成果:
- 该化合物的配方为 (NO) 2 (((XeF8),由离散的化 (NO +) 和八化 ((VIII) ((XeF8) 2-) 离子组成.
- (XeF8) 2 - 离子采用略有扭曲的阿基米德反 prismatic 几何.
- -键的长度范围从1.946(5) 到2.099(5) 斯特.
结论:
- 确定的结构提供了离子排列和离子几何学的精确细节.
- 观察到的 (XeF8) 2-离子的扭曲挑战了简单单一对排斥模型的预测.
- 这些结构数据作为理论计算和理解化合物中超价结合的关键基准.
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