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

Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

639
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
639
Stability of Substituted Cyclohexanes02:30

Stability of Substituted Cyclohexanes

14.1K
This lesson discusses the stability of substituted cyclohexanes with a focus on energies of various conformers and the effect of 1,3-diaxial interactions.
The two chair conformations of cyclohexanes undergo rapid interconversion at room temperature. Both forms have identical energies and stabilities, each comprising equal amounts of the equilibrium mixture. Replacing a hydrogen atom with a functional group makes the two conformations energetically non-equivalent.
For example, in...
14.1K
Chair Conformation of Cyclohexane02:02

Chair Conformation of Cyclohexane

17.1K
The chair conformation is the most stable form of cyclohexane due to the absence of angle and torsional strain. The absence of angle strain is a result of cyclohexane’s bond angle being very close to the ideal tetrahedral bond angle of 109.5° in its chair conformer. Similarly, the torsional strain is also absent owing to the perfectly staggered arrangement of bonds.
The hydrogen atoms linked to carbons are arranged in two different axial and equatorial orientations to achieve this...
17.1K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

29.1K
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...
29.1K
Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

879
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
879
Aromatic Hydrocarbon Cations: Structural Overview01:18

Aromatic Hydrocarbon Cations: Structural Overview

3.4K
Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group...
3.4K

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

Programming local confinements in crystalline frameworks through reticular chemistry.

Nature materials·2026
Same author

A Mesopore-Confined and Graphene Oxide-Localized Ruthenium Catalyst Increases Rates of Mid-Chain Polyolefin Hydrogenolysis.

Journal of the American Chemical Society·2026
Same author

From Oxo to Oxyl to Biradical: Systematic Multireference Calculations of Methane Activation at MOF Nodes.

Journal of the American Chemical Society·2026
Same author

Multilevel Analysis of Electrochemically Mediated Methanolysis of Poly(ethylene terephthalate) (PET).

Environmental science & technology·2026
Same author

Synthesis of Two-Dimensional Mechanically Interlocked Polymers at the Hundred-Gram Scale.

Journal of the American Chemical Society·2026
Same author

Biocatalytic cascades enable manufacture of the macrocyclic peptide enlicitide.

Science (New York, N.Y.)·2026

関連する実験動画

Updated: Nov 21, 2025

Author Spotlight: Functionalizing Metal-Organic Frameworks: Advancements, Challenges, and the Power of Post-Synthetic Ligand Exchange
04:51

Author Spotlight: Functionalizing Metal-Organic Frameworks: Advancements, Challenges, and the Power of Post-Synthetic Ligand Exchange

Published on: June 23, 2023

3.8K

ジルコニウム基の金属有機枠における過渡連鎖とその機械的安定性および吸収特性への影響

Lee Robison1,2, Xinyi Gong1,2, Austin M Evans1

  • 1Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.

Journal of the American Chemical Society
|January 12, 2021
PubMed
まとめ
この要約は機械生成です。

この研究は,金属有機フレームワーク (MOF) の非相互浸透構造から相互浸透構造への変換を追跡します. 相互浸透したMOF,STA-26は,より高い機械的安定性とガス捕獲アプリケーションの潜在性を示しています.

さらに関連する動画

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

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

48.7K
Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
08:12

Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance

Published on: September 5, 2018

16.4K

関連する実験動画

Last Updated: Nov 21, 2025

Author Spotlight: Functionalizing Metal-Organic Frameworks: Advancements, Challenges, and the Power of Post-Synthetic Ligand Exchange
04:51

Author Spotlight: Functionalizing Metal-Organic Frameworks: Advancements, Challenges, and the Power of Post-Synthetic Ligand Exchange

Published on: June 23, 2023

3.8K
Synthesis and Characterization of Functionalized Metal-organic Frameworks
11:27

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

48.7K
Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
08:12

Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance

Published on: September 5, 2018

16.4K

科学分野:

  • 材料科学
  • 化学について
  • ナノテクノロジー

背景:

  • サブグリットの相互浸透は,金属有機フレームワーク (MOF) で一般的な現象です.
  • 材料の設計において,非相互浸透型と相互浸透型MOF構造の移行を理解することは極めて重要です.
  • ジルコニウムクラスターベースのMOFは,ユニークな構造的可能性を提供します.

研究 の 目的:

  • ジルコニウムクラスターベースのMOFの非相互浸透性 (NU-1200) から相互浸透性 (STA-26) の同位体への進化を調査する.
  • MOFの相互浸透を監視するためのテンプレートアプローチを開発し,実証する.
  • 両方のMOFイソメアの機械的安定性とガス捕獲能力を評価する.

主な方法:

  • 窒素ポロシメトリーとX線微分を用いて相互浸透を間接的に観察する.
  • 高解像度伝送電子顕微鏡を用いて相互浸透を直接観察する.
  • 圧縮された在位X線微分,ナノインデント,密度関数理論による機械的安定性評価.

主要な成果:

  • NU-1200からSTA-26への一時的な連鎖プロセスは,アンサンブルと直接のイメージング技術の組み合わせを使用して成功裏にモニタリングされました.
  • STA-26は,NU-1200よりも機械的にかなり安定していることが判明しました.
  • この研究は,これらのMOFがガス状のn-ヘクサンを捕獲する可能性を実証した.

結論:

  • 開発されたアプローチは,MOFの相互浸透を大量および単一粒子レベルで監視するためのテンプレートを提供します.
  • STA-26の機械的安定性により,高度なアプリケーションの有望な候補となります.
  • これらのMOFと混合相は,揮発性有機化合物と化学兵器を模倣する可能性を示している.