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Ionic Bonds00:42

Ionic Bonds

118.7K
Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
118.7K
Bond Polarity, Dipole Moment, and Percent Ionic Character02:48

Bond Polarity, Dipole Moment, and Percent Ionic Character

29.1K
Bond Polarity
29.1K
Ionic Bonding and Electron Transfer02:48

Ionic Bonding and Electron Transfer

41.8K
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. 
41.8K
Chemical Bonds02:40

Chemical Bonds

16.8K

Atoms participate in a chemical bond formation to acquire a completed valence-shell electron configuration similar to that of the noble gas nearest to it in atomic number. Ionic, covalent, and metallic bonds are some of the important types of chemical bonds. Bond energy and bond length determine the strength of a chemical bond.
Types of Chemical Bonds
An ionic bond is formed due to electrostatic attraction between cations and anions. Often, the ions are formed by the transfer of electrons...
16.8K
Molecular Shape and Polarity03:37

Molecular Shape and Polarity

60.7K
Dipole Moment of a Molecule
60.7K
Types of Chemical Bonds02:37

Types of Chemical Bonds

76.3K
Chemical bonding theories were pioneered by American chemist Gilbert N. Lewis. He developed a model called the Lewis model to explain the type and formation of different bonds. Chemical bonding is central to chemistry; it explains how atoms or ions bond together to form molecules. It explains why some bonds are strong and others are weak, or why one carbon bonds with two oxygens and not three; why water is H2O and not H4O. 
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関連する実験動画

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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

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方向性イオン結合

Illia Hutskalov1, Anthony Linden1, Ilija Čorić1

  • 1Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.

Journal of the American Chemical Society
|April 7, 2023
PubMed
まとめ
この要約は機械生成です。

イオン結合は,通常非方向性で,空間構造化のために設計することができます. この研究は,シールドされたイオンを使用して方向性イオン結合を導入し,分子設計のための非共性相互作用の代替案を提供します.

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Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
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科学分野:

  • 化学について
  • 材料科学
  • 超分子化学

背景:

  • 共同結合とイオン結合は基本的な原子相互作用である.
  • 伝統的なイオン結合には方向性がないため,空間構造化での使用が制限されています.
  • 水素結合のような非共性相互作用は 分子組織にとって極めて重要です

研究 の 目的:

  • 方向性イオン結合を作る方法を導入する.
  • 非共性相互作用の代替手段として,これらの方向性イオン結合の可能性を探求する.
  • イオン相互作用を用いた有機分子と物質の空間構造を可能にする.

主な方法:

  • 充電された場所の周りの非極性シールドでイオン結合を設計する.
  • このシールドから生じる予測可能な方向性を調べる.
  • 有機分子や材料の構造化における応用性を評価する.

主要な成果:

  • イオン結合の予測可能な方向性を示した.
  • 非極性シールドがイオン相互作用に 方向性を与える方法を示した
  • 分子と物質の構造化のための実行可能な代替手段として方向性イオン結合を確立した.

結論:

  • 方向性イオン結合は,充電された部位をシールドすることによって達成できます.
  • これらのイオン結合は 空間的な組織化に 新たなアプローチを 提供しています
  • これは有機分子と高度な材料を設計するための 新しいツールを提供します