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相关概念视频

VSEPR Theory and the Basic Shapes02:52

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Overview of VSEPR Theory
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Hybridization of Atomic Orbitals I03:24

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The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
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Hybridization of Atomic Orbitals II03:35

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sp3d and sp3d 2 Hybridization
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Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:
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Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
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Updated: Jun 14, 2025

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
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在固体CsPrF6中,五价Pr(V) 是否可行?

Lian-Wei Ye1, Zi-He Zhang1, Yang He1

  • 1Department of Chemistry and Engineering Research Center of Advanced Rare-Earth Materials of Ministry of Education, Tsinghua University, Beijing 100084, China. hshu@mail.tsinghua.edu.cn.

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概括
此摘要是机器生成的。

研究人员预测Pr(V) 在固态CsPrF6中稳定形成,这在理解高价值类化合物方面取得了重大进展. 这一发现为在凝结相中探索Pr(V) 开辟了新的途径.

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科学领域:

  • 无机化学 无机化学 有机化学
  • 量子化学 是一个量子化学.
  • 材料科学 材料科学 材料科学

背景情况:

  • 氧化状态 (OS) 在化学中对于电子跟踪至关重要.
  • 兰化物 (Ln) 通常表现为+III OS,有些达到+IV.
  • 在缩相中合成Pr(V) 是一个长期存在的挑战.

研究的目的:

  • 为了研究在固态化合物中形成Pr(V) 的可能性.
  • 探索潜在的Pr(V) 材料的稳定性和电子结构.
  • 扩大对高价值兰坦化物化学的理解.

主要方法:

  • 先进的量子化学研究.
  • 反应路径的热力学分析.
  • 晶体结构和电子结构计算.

主要成果:

  • 从Pr(III) 和Pr(IV) 前体中预测固态CsPrF6的外热形成.
  • CsPrF6具有稳定的晶体结构,具有[PrF6]-八面体集群.
  • 电子结构分析证实Pr处于其最高+V氧化状态,具有封闭外配置.

结论:

  • 在固态化物中形成Pr(V) 是可行的.
  • CsPrF6 是一种稳定的凝聚相化合物,含有 Pr(V).
  • 这项工作丰富了对高价值化物化学和材料的知识.