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相关概念视频

Oxidation Numbers03:14

Oxidation Numbers

38.1K
In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules.
38.1K
Properties of Transition Metals02:58

Properties of Transition Metals

27.3K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
27.3K
Balancing Redox Equations02:58

Balancing Redox Equations

53.9K
Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...
53.9K
Ladder Diagrams: Redox Equilibria01:30

Ladder Diagrams: Redox Equilibria

535
Ladder diagrams are useful tools for understanding redox equilibrium reactions, especially the effects of concentration changes on the electrochemical potential of the reaction. The vertical axis in the redox ladder diagrams represents the electrochemical potential, E. The area of predominance is demarcated using the Nernst equation.
Consider the Fe3+/Fe2+ half-reaction, which has a standard-state potential of +0.771 V. At potentials more positive than +0.771 V, Fe3+ predominates, whereas Fe2+...
535
Redox Titration: Other Oxidizing and Reducing Agents01:26

Redox Titration: Other Oxidizing and Reducing Agents

405
Besides iodine, other oxidizing or reducing agents can serve as titrants in redox titrations. Common oxidizing titrants include KMnO4, cerium(IV), and K2Cr2O7. The choice of oxidizing titrants depends on factors like stability, cost, analyte strength, and reaction rate between the analyte and titrant. KMnO4 is a strong oxidizing titrant that reduces from Mn(VII) to Mn(II) in a highly acidic solution, simultaneously oxidizing the analyte to a higher oxidation state. In this case, KMnO4 acts as a...
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Oxidation-Reduction Reactions03:11

Oxidation-Reduction Reactions

66.0K
Oxidation–Reduction Reactions
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相关实验视频

Updated: Sep 17, 2025

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
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Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks

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固体的有效氧化状态分析.

Gerard Comas-Vilà1, Leila Pujal1,2, Alberto Otero-de-la-Roza3

  • 1Institut de Química Computacional i Catàlisi i Departament de Química of Computational Chemistry and Catalysis, Chemistry Department, University of Girona, Montilivi Campus, Girona, Catalonia 17003, Spain.

Journal of chemical theory and computation
|July 3, 2025
PubMed
概括
此摘要是机器生成的。

本研究将有效氧化状态 (EOS) 方法用于使用分子中的原子量子理论 (QTAIM) 进行固态计算的概括. 新的方法准确地分配了各种固体材料中的氧化状态.

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科学领域:

  • 固态化学 固态化学
  • 量子化学是一种量子化学.
  • 材料科学是一种材料科学.

背景情况:

  • 精确的氧化状态的分配对于理解固体中的化学键和特性至关重要.
  • 现有的方法在复杂的固态系统中可能存在局限性.

研究的目的:

  • 在固态计算中应用有效氧化状态 (EOS) 方法的概括.
  • 从波函数分析开发一个强大的方案来分配氧化状态.

主要方法:

  • 在分子中的原子量子理论 (QTAIM) 框架内实施EOS方法.
  • 原子重叠矩阵 (AOM) 的利用,通过最大局部化的Wannier函数 (MLWFs) 表示.

主要成果:

  • 综合的EOS方法被证明适用于广泛的固体类型.
  • 成功应用于离子固体,分子晶体,金属氧化物,矿,化物和高压系统.

结论:

  • 开发的方法提供了一种可靠的方式来确定固态材料中的氧化状态.
  • 这一进步有助于更深入地了解各种固体的化学键和电子结构.