Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Ionic Crystal Structures02:42

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Intermolecular Forces03:13

Intermolecular Forces

Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen bonds, and dispersion...
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.
Aromatic Hydrocarbon Anions: Structural Overview01:18

Aromatic Hydrocarbon Anions: Structural Overview

Neutral hydrocarbons like cyclopentadiene with an odd number of carbon atoms and one intervening CH2 group in the ring are not aromatic. Cyclopentadiene with 4 π electrons does not satisfy the 4n + 2 π electron rule. Additionally, the intervening CH2 group is sp3 hybridized and lacks a vacant p orbital, thereby interrupting the overlap of p orbitals in a continuous manner and preventing the delocalization of π electrons throughout the ring.
Due to the absence of continuous overlap of p...
Ionic Association01:28

Ionic Association

The ionic association is the association of oppositely charged ions in an electrolyte solution to form ion pairs. Bjerrum defined ion pairs as two oppositely charged ions whose electrostatic attraction exceeds the thermal energy of the system, typically expressed as 2kT. Electrostatic attraction depends on ionic charge, separation distance, and the dielectric constant of the medium. Thermal energy, represented by kT, reflects the tendency of ions to move independently due to molecular motion.

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Coulombic Metal-Organic Frameworks Assembled from π-Stacked Organic Nodes and Polyoxometalate Inorganic Linkers.

Journal of the American Chemical Society·2026
Same author

Synthesis and crystal structure determination of aluminium hydroxide methane-sulfonate, Al(OH)(CH<sub>3</sub>SO<sub>3</sub>)<sub>2</sub>.

Acta crystallographica. Section E, Crystallographic communications·2026
Same author

Synthesis of filled β-Mn-type ternary tellurides using a boron-tellurium reaction mixture.

Dalton transactions (Cambridge, England : 2003)·2026
Same author

Synthesis and Characterization of RE<sub>3</sub>LiSiSe<sub>7</sub> (RE = La-Nd, Sm, Gd, and Tb) Exhibiting Enhanced Nonlinear Optical (NLO) Properties.

Inorganic chemistry·2026
Same author

Increasing connectivity through self-complementarity enables permanent porosity in a halogen-bonded organic framework.

Chemical science·2026
Same author

Synthesis of Unusually High Valent Perovskite Oxide from the Highly Oxidized Coprecipitation Precursor.

Journal of the American Chemical Society·2026

関連する実験動画

Updated: Jul 10, 2026

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
08:54

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid

Published on: January 25, 2020

固体中のカチオン-アニオン相互作用と極性構造

Michael R Marvel1, Julien Lesage, Jaewook Baek

  • 1Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113, USA.

Journal of the American Chemical Society
|October 20, 2007
PubMed
まとめ

カリウムのカチオンは,KNaNbOF5.5.のニオビウムオキシフルオリド ([NbOF5]2-) アニオンの非中心的包装に重要な役割を果たしています. これは,CsNaNbOF5と対照的に,結晶構造と物理的性質の洞察を明らかにします.

科学分野:

  • 無機化学 無機化学とは
  • 固体化学 固体化学
  • クリスタログラフィーです.

背景:

  • 酸素とフッ素を含む複雑な構造は,しばしば独特の物理的性質を示します.
  • このようなフレームワークでは,ポリングの第二結晶法則 (PSCR) からの偏差は一般的です.
  • [NbOF5]2-アニオンの構造と結合は,材料の性質を理解するための鍵です.

研究 の 目的:

  • KNaNbOF5とCsNaNbOF5.5における[NbOF5]2-アニオンの構造的順序を調査する.
  • これらのニオバートの包装と対称性におけるアルカリ金属カチオン (Na+,K+,Cs+) の役割を分析する.
  • 結晶構造に関するPSCRと結合バレンスのモデルからの偏差を探求する.

主な方法:

  • 単結晶X線 difraktionで結晶構造と格子パラメータを決定する.
  • 結合長 (Nb-O,Nb-F) と協調環境の分析.
  • カチオン-アニオン相互作用を評価するために結合バレンスのモデルを適用する.

主要な成果:

  • KNaNbOF5は,極地空間群Pna21で結晶化し,[NbOF5]2-アニオン内の有序なNb-OとNb-F結合を特徴としています.
  • CsNaNbOF5は,中心対称空間群 Pbcn.で結晶する.

さらに関連する動画

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
06:35

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

Published on: February 15, 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

関連する実験動画

Last Updated: Jul 10, 2026

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
08:54

Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid

Published on: January 25, 2020

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
06:35

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

Published on: February 15, 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

  • この研究は,[NbOF5]2-アニオン.の非中心対称的配置に対する小さなカリウムカチオンの有意な影響を強調しています.

    • 結論:

    • アルカリ金属カチオンの存在と大きさは, [NbOF5]2基化合物の結晶対称性と包装に決定的な影響を及ぼします.
    • PSCRからの偏差は観察され,特定のカチオン-アニオン相互作用によって説明されます.
    • これらの構造的なニュアンスを理解することは,関連する無機材料の物理的性質を予測し調整するために不可欠です.