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相关概念视频

Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

26.2K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.2K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

41.7K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
41.7K

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Updated: Jun 11, 2025

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
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C型的Yb2Te3O9是使用的

Patrick Höss1, Sheng-Chun Chou1, Philip L Russ1

  • 1Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring, 55, 70569 Stuttgart, Germany.

IUCrData
|October 7, 2024
PubMed
概括
此摘要是机器生成的。

研究人员合成了具有C型晶体结构的diytterbium enneaoxidotritellurate ((IV). 这一发现填补了对稀土酸盐的知识空白,为其结构性质提供了洞察力.

关键词:
晶体结构 晶体结构兰他诺酸是类的.氧化氨酸 (IV) 氧化氨酸伊特尔的使用情况

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科学领域:

  • 固态化学 固态化学
  • 无机材料科学 是一种无机材料科学.
  • 稀土化学 稀土化学

背景情况:

  • 稀土酸盐是无机化合物的重要类别.
  • 了解这些材料的晶体结构对于预测它们的性质至关重要.
  • 以前的研究已经确定了一些稀土酸盐的C型结构,但存在差距.

研究的目的:

  • 为了合成和表征二二氧化和氧化三酸盐 (IV).
  • 为了确定合成化合物的晶体结构.
  • 研究稀土离子半径与酸盐中的晶体结构之间的关系.

主要方法:

  • 使用二元氧化物和化 (CsCl) 流的高温合成.
  • 使用X射线衍射的晶体结构的确定.
  • 与已知的同型化合物进行比较.

主要成果:

  • 在1073K的温度下成功合成了二氧化二氧化三酸 (IV).
  • 该化合物在C型晶体结构中结晶.
  • 它与C型 (Tm) 和 (Lu) 酸盐同型.

结论:

  • 已经完成了二二氧化三酸盐 (IV) 的合成和结构性表征.
  • 这些发现证实了这种化合物中存在C型结构的存在.
  • 这项工作有助于完善对稀土酸盐结构趋势的理解.