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相关概念视频

Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.
Exceptions to the Octet Rule02:55

Exceptions to the Octet Rule

Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:
VSEPR Theory and the Basic Shapes02:52

VSEPR Theory and the Basic Shapes

Overview of VSEPR Theory
Hybridization of Atomic Orbitals I03:24

Hybridization of Atomic Orbitals I

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...
Lewis Acids and Bases02:33

Lewis Acids and Bases

In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to donate a pair of electrons and form a coordinate covalent bond.
A coordinate covalent bond (or dative bond) occurs when one of the atoms in the bond provides both bonding electrons. For example, a coordinate covalent bond occurs when a water molecule combines with a hydrogen ion to form a hydronium ion. A coordinate covalent bond also results when...
Lewis Acids and Bases02:16

Lewis Acids and Bases

This lesson delves into Lewis acids and bases in the context of the octet rule for electron-deficient compounds. Here, the concept is discussed, emphasizing the group 13 elements like boron or aluminium. Since group 13 elements possess three valence electrons, they form trivalent compounds with a sextet of electrons and a vacant orbital for the central atom. Consequently, these electron-deficient compounds accept electrons from other species to complete their octet in a chemical reaction. They...

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Scope and Mechanism of Nickel-Isocyanide-Catalyzed Imine Hydrosilylation for ALD-Relevant Aminosilanes.

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A Structurally Diverse Series of Eight-Coordinate Hg<sup>2+</sup> Complexes of KrF<sub>2</sub> Derived from Hg(PnF<sub>6</sub>)<sub>2</sub> (Pn = As, Sb) and FHg(AsF<sub>6</sub>).

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Xenon Trioxide Coordination Complexes of Crown Ethers: (CH<sub>2</sub>CH<sub>2</sub>O)<sub>4</sub>XeO<sub>3</sub> and Xe(VI) Hydrates, [(CH<sub>2</sub>CH<sub>2</sub>O)<sub>6</sub>(H<sub>2</sub>O)XeO<sub>3</sub>]⋅ H<sub>2</sub>O and [(CH<sub>2</sub>CH<sub>2</sub>O)<sub>6</sub>(H<sub>2</sub>O)XeO<sub>3</sub>]<sub>2</sub> ⋅ 2H<sub>2</sub>O ⋅ HF.

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Chromium(VI) Oxyfluoride Dianions, [Cr<sub>2</sub> O<sub>4</sub> F<sub>6</sub> ]<sup>2-</sup> and [CrO<sub>2</sub> F<sub>4</sub> ]<sup>2-</sup> ; Syntheses and Structures of [XeF<sub>5</sub> ]<sub>2</sub> [Cr<sub>2</sub> O<sub>4</sub> F<sub>6</sub> ], [XeF<sub>5</sub> ]<sub>2</sub> [Cr<sub>2</sub> O<sub>4</sub> F<sub>6</sub> ] ⋅ nX (X=HF, n=4; X=XeOF<sub>4</sub> , n=2), and [XeF<sub>5</sub> ][Xe<sub>2</sub> F<sub>11</sub> ][CrO<sub>2</sub> F<sub>4</sub> ].

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XeF<sub>2</sub> Coordination Complexes of the [BrO<sub>2</sub>]<sup>+</sup> Cation, [O<sub>2</sub>Br(FXeF)<sub></sub>][AsF<sub>6</sub>] (<i>n</i> = 1, 2) and [O<sub>2</sub>Br(FXeF)<sub>2</sub>][SbF<sub>6</sub>]; Their Syntheses and Structural Characterizations.

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Synthesis, Structure, and Bonding of a Xe<sup>IV</sup> Transition-Metal Coordination Complex, F<sub>3</sub> XeF<sub>b</sub> - - -WOF<sub>4</sub>.

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相关实验视频

Updated: Jun 11, 2026

Synthesis and Characterization of Functionalized Metal-organic Frameworks
11:27

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

含有BrO(3)F(2)(-) 离子的盐的合成和表征;一种罕见的(VII) 物种的例子.

John F Lehmann1, Gary J Schrobilgen

  • 1Department of Chemistry, McMaster University, Hamilton, Ontario, L8S 4M1, Canada.

Journal of the American Chemical Society
|June 30, 2005
PubMed
概括

合成和表征了BrO(3)F(2)(-) 离子,揭示了它的D(3h) 对称性. 这种新的 (VII) 物种与其类同类物种相比,具有独特的化物受体特性.

科学领域:

  • 无机化学 无机化学
  • 固态化学 固态化学
  • 量子化学 是一个量子化学.

背景情况:

  • 新型高氧化状态金属化合物的合成和表征对于理解化学键和反应性至关重要.
  • ((VII) 种类是罕见的,将它们分离到宏观数量中为结构和光谱研究提供了独特的机会.
  • 具有D(3h) 对称性的氧化化物由于其独特的结构和电子特性而引起了特别的兴趣.

研究的目的:

  • 为了合成和描述新型BrO(3)F(2)(-) 离子.
  • 为了研究BrO(3) F. 的离子受体特性.
  • 为了比较BrO的结构性,光谱性和电子性质,BrO的结构性,光谱性和电子性质与与它相关的物种,如XeO的结构性,光谱性和电子性,如XeO的结构性,光谱性和电子性.

主要方法:

  • 通过 BrO(3) F 与离子捐赠体 (KF,RbF,CsF,[N(CH3) [4][F],NOF) 的反应合成 BrO(2) F).
  • 单晶X射线衍射以确定[NO]2[BrO(3) F(2)][F]和[N(CH3) [4][BrO(3) F(2) 的晶体结构和精确的键长.
  • 19FNMR光谱,拉曼和红外光谱用于振动分析,电子结构计算 (DFT)用于详细的属性调查.

主要成果:

  • BrO(3)F(2)(-) 离子已成功制备并以宏观数量分离出来.

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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

相关实验视频

Last Updated: Jun 11, 2026

Synthesis and Characterization of Functionalized Metal-organic Frameworks
11:27

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
08:46

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)

Published on: November 22, 2016

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

  • X射线晶体学证实了两种研究盐中的离子的D(3h) 对称性,确定了Br-O和Br-F键的长度.
  • 光谱数据 (19F NMR,IR,拉曼) 和计算分析为电子结构和振动模式提供了洞察力,将它们与已知的类似物进行比较.

    • 结论:

    • BrO(3)F(2)(-) 离子代表了已知的Br(VII) 种的显著增加,表现出独特的化物受体行为.
    • D(3h) 对称性和结构参数与理论预测和与异电子物种的比较相一致.
    • 电子结构计算有助于合理化BrO{3}F{2}-和假设的ClO{3}F{2}-之间的观察到的稳定性差异.