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Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

5.0K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
5.0K
Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

454
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...
454
Diazonium Group Substitution: –OH and –H01:19

Diazonium Group Substitution: –OH and –H

2.9K
Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
2.9K
Carboxylic Acids to Methylesters: Alkylation using Diazomethane01:33

Carboxylic Acids to Methylesters: Alkylation using Diazomethane

2.3K
Carboxylic acids react with diazomethane in an ether solvent via alkylation at the carboxylate oxygen atom to give methyl esters of the corresponding acid with excellent yields.
2.3K
Electrophilic Aromatic Substitution: Sulfonation of Benzene01:22

Electrophilic Aromatic Substitution: Sulfonation of Benzene

6.3K
Sulfonation of benzene is a reaction wherein benzene is treated with fuming sulfuric acid at room temperature to produce benzenesulfonic acid. Fuming sulfuric acid is a mixture of sulfur trioxide and concentrated sulfuric acid.
6.3K

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関連する実験動画

Updated: Aug 24, 2025

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
12:30

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework

Published on: April 9, 2018

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硫黄二酸化物に対するダイアミン付属Mg2の安定性の評価

Surya T Parker1,2, Alex Smith3, Alexander C Forse1

  • 1Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, California 94720, United States.

Journal of the American Chemical Society
|October 20, 2022
PubMed
まとめ
この要約は機械生成です。

ダイアミン付の金属有機フレームワークは,SO2の曝露にもかかわらず,優れたCO2捕獲の安定性を示しています. 主要なダイアミンは二酸化硫黄による分解に抵抗し,産業用排気ガスから炭素を強固に吸収します.

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Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
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Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance

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Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
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Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers

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関連する実験動画

Last Updated: Aug 24, 2025

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
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Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework

Published on: April 9, 2018

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Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
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Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
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科学分野:

  • 材料科学
  • 化学工学
  • 環境科学

背景:

  • ダイアミン付属のMg2 ((dobpdc)) のような金属有機フレームワークは,CO2捕獲に有望である.
  • これらのMOFの硫黄二酸化物 (SO2) に対する安定性は極めて重要ですが,大部分は未試験です.
  • SO2の影響を理解することは,炭素捕獲技術の実用化に不可欠です.

研究 の 目的:

  • dmpn-Mg2 ((dobpdc)) の安定性とCO2吸収性能に対するSO2の影響を調査する.
  • SO2曝露下で異なるダイアミン付属のMg2 ((dobpdc) 変種の頑丈性を評価する.
  • SO2の存在下でMOFの安定性を支配する構造-特性関係を明らかにする.

主な方法:

  • SO2の突破実験とCO2の同位体測定が行われました.
  • 様々なダイアミン付属のMg2 ((dobpdc) MOFの安定性を評価した.
  • 固体15N NMRスペクトロスコーピーと密度関数理論 (DFT) の計算を使用した.

主要な成果:

  • dmpn-Mg2 ((dobpdc) は,SO2を含む湿ったシミュレートフームガスの曝露後にCO2容量の91%を保持した.
  • 主要な (1°,1°) ダイアミンを持つMOFは,1°,2°および1°,3°の変種と比較して,湿気SO2に対する優れた安定性を示した.
  • SO2の分解メカニズムは,より不安定なMOFで金属結合アミンと反応し,安定したMOFは金属-ダイアミン結合を傷つけることなくアンモニアビスルフィートを形成します.

結論:

  • ダイアミン付属のMg2 ((dobpdc) MOFは,特に1°,1°のダイアミンは,現実的な炭素捕獲条件下でSO2に対する有意な強度を示している.
  • 特定された構造-特性関係は,産業用煙ガス処理のためのより安定したMOFを設計するための経路を提供します.
  • これらの発見は,石炭の煙ガス炭素を吸収するための耐久性アドソーベンツとしてのdmpn-Mg2 (((dobpdc)) の可能性を裏付けている.