Search research articles

お問い合わせ

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 Journal Methods Collections JoVE Encyclopedia of Experiments アーカイブ

教育

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual 教員リソースセンター教員サイト

プライバシーポリシー

関連する概念動画

Lattice Centering and Coordination Number

Lattice Centering and Coordination Number

The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...

Metallic Solids

Metallic Solids

Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...

Coordination Number and Geometry

Coordination Number and Geometry

For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.

Crystal Field Theory - Tetrahedral and Square Planar Complexes

Crystal Field Theory - Tetrahedral and Square Planar Complexes

Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...

Valence Bond Theory

Valence Bond Theory

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...

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

Can halogen atoms in coumarin derivatives affect the structure and antiproliferative activity of nickel(II) complexes?

Acta crystallographica. Section C, Structural chemistry·2026

Same author

Ni(DQ)<sub>2</sub>: A Useful Gateway to Zero-Valent Nickel Complexes.

Organometallics·2026

Same author

NMR and X-ray study of the diastereoselective [3+2] cycloaddition reaction of chiral acridine with stable 2,4,6-trimethylbenzonitrile N-oxide.

Acta crystallographica. Section C, Structural chemistry·2026

Same author

Carboranes with Exopolyhedral Boron-Tetrel Bonds.

Organometallics·2025

Same author

Ultraselective sequestration of Li<sup>+</sup> and Mg<sup>2+</sup> from brines via a reusable polyoxoniobate-based ion sponge.

Science advances·2025

Same author

Conformational Dynamics, Isomerization, and Biological Activity of Acridine-Thiazolidinone Hybrids: A Combined Experimental and Theoretical Study.

ACS omega·2025

Same journal

Gas-Responsive Metal-Organic Frameworks for Adaptive Thermal Energy Storage with Tunable Charge-Discharge Temperatures.

Journal of the American Chemical Society·2026

Same journal

Engineering a Thiamine-Dependent Benzoylformate Decarboxylase for Stereodivergent Radical C(sp<sup>3</sup>)-C(sp<sup>3</sup>) Bond Formation.

Journal of the American Chemical Society·2026

Same journal

Accelerated Directional Proton-Coupled Electron Transfer Enabled by Intrinsic Dipole Field in Biomimetic α-Helical Structure.

Journal of the American Chemical Society·2026

Same journal

Alternating Current-Driven Hydrogen Isotope Labeling of Aliphatic Amines Using 1,3-Propanedithiol as an Efficient Hydrogen Atom Transfer Reagent.

Journal of the American Chemical Society·2026

Same journal

Two-Dimensional van der Waals Polar Metal MoOBr<sub>2</sub>.

Journal of the American Chemical Society·2026

Same journal

Negatively Curved Chiral Bilayer Nanographene.

Journal of the American Chemical Society·2026

関連記事をすべて見る

Search research articles

関連する実験動画

Updated: Jan 8, 2026

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

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

Published on: February 15, 2016

単結晶変換を使用して,多要素クラスターベースの調整ネットワークに精密な原子配置を行う.

Linfeng Chen^1,2, Erika Samolova^1,3, Mingjie Xu⁴

¹Department of Chemistry and Biochemistry, University of California─San Diego, La Jolla, California 92093, United States.

Journal of the American Chemical Society

|December 15, 2025

まとめ

この要約は機械生成です。

研究者はポリオキソメタラート (POM) ベースの材料に複数のカチオンを正確に配置するための新しい方法を開発しました. この単結晶から単結晶への変換戦略は,特異な性質を持つ複合的多成分材料の制御された合成を可能にします.

さらに関連する動画

Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry

Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry

Published on: April 8, 2020

Spatial Separation of Molecular Conformers and Clusters

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

関連する実験動画

Last Updated: Jan 8, 2026

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

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

Published on: February 15, 2016

Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry

Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry

Published on: April 8, 2020

Spatial Separation of Molecular Conformers and Clusters

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

科学分野:

材料科学
無機化学
クリスタルグラフィー

背景:

クラスターまたは超原子の構成要素は,調節可能な性質を持つモジュラー半導体設計を可能にします.
精密な元素配置で複雑な金属酸化物を合成することは,特に化学的性質が似ている元素には困難です.

研究の目的:

ポリオキシメタラート (POM) ベースの協調ネットワークを精密に配置した複数のカチオンで合成するための新しい戦略を提示する.
マルチコンポーネントの材料でカチオン分布を合理的に制御することを実証する.

主な方法:

シングル・トゥ・シングル・クリスタル (SCSC) 変換を用いる.
ポリオキシメタラート (POM) を利用して,封じ込めカチオン (Z) で相変換を追跡する.
POMをブリッジメタルカチオンで組み合わせる

主要な成果:

定義された位置で3つの異なるカチオンを持つPOMベースの調整ネットワークを成功裏に合成しました.
結晶化と変換段階でのカチオンの配置が支配されていることが示された.
変換過程で単一結晶性の保持が確認されています.

結論:

統合されたPOMラベルとSCSC変換戦略により,カチオン分布を正確に制御できます.
このアプローチは,高構成と空間的精度を持つ多要素材料の構築に多用途なプラットフォームを提供します.
先進的な材料の設計を進めます