从黄色到黑色:在 (IV) 和 (IV) 基酸盐之间发生了巨大的变化
Justin N Cross1, Patrick M Duncan, Eric M Villa
1Department of Chemistry and Biochemistry, University of Notre Dame, 156 Fitzpatrick Hall, University of Notre Dame, Notre Dame, Indiana 46556, USA.
Journal of the American Chemical Society
|January 31, 2013
概括
水热合成产生了明显的和聚酸盐结构. 化合物,CsPu(3)Mo(6)O(24)(H(2)O),由于混合的Mo氧化状态,呈现出半导体黑红色.
科学领域:
- 无机化学 无机化学 有机化学
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
背景情况:
- 水热反应对于合成新型无机化合物具有多样性.
- 和的化学成分,特别是氧化物,具有独特的挑战和机遇.
- 了解稀土和活性化物化合物的结构和电子特性对于材料应用至关重要.
研究的目的:
- 为了研究和化与三氧化和碳酸二氧化的比较热水反应.
- 描述由此产生的晶体结构及其特性.
- 阐明导致合成化合物的独特颜色和半导体行为的因素.
主要方法:
- 水热合成反应.
- 单晶X射线衍射用于结构确定.
- 射线吸收近边结构 (XANES) 光谱用于氧化状态分析.
主要成果:
- 合成了两种不同的化合物:Ce ((3) Mo ((6) O ((24) (((H ((2) O)) (黄色板) 和CsPu ((3) Mo ((6) O)) (黑红色半导体板).
- 这两种化合物共享类似的通道结构,但在通道占用者方面有所不同 (水与Cs+).
- XANES证实了四价,并揭示了化合物中模糊的Mo氧化状态 (Mo(V/Mo(VI),这有助于其颜色.
结论:
- 在化合物的通道中存在Cs +,以及混合的Mo氧化状态,导致其半导体和黑红色的特性.
- 结构拓被保留,但阴子占用显著影响材料特性.
- 该研究强调了水热条件下的和的细微反应性.
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