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関連する概念動画

Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

5.6K
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.
5.6K
Structure and Nomenclature of Thiols and Sulfides02:17

Structure and Nomenclature of Thiols and Sulfides

5.5K
Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry,...
5.5K
Sulfur Assimilation01:20

Sulfur Assimilation

241
Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to...
241
Electrophilic Aromatic Substitution: Sulfonation of Benzene01:22

Electrophilic Aromatic Substitution: Sulfonation of Benzene

7.5K
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.
7.5K
Preparation and Reactions of Thiols02:33

Preparation and Reactions of Thiols

7.3K
Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane reacts with sodium hydrosulfide to give butanethiol.
7.3K
The Sulfur Cycle01:22

The Sulfur Cycle

51.5K
Sulfur, an important element in the chemical makeup of proteins, is recycled through the atmosphere and aquatic and terrestrial environments. Found in the atmosphere as sulfur dioxide (SO2), sulfur is released by decaying organisms, weathered rocks, geothermal vents, volcanos, and burning fossil fuels. It is deposited into the ecosystem, cycled through the biotic community, and either released back into the atmosphere as gas or deposited in marine sediment for long-term storage and eventual...
51.5K

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Updated: Dec 21, 2025

Synthesis of Terpolymers at Mild Temperatures Using Dynamic Sulfur Bonds in PolyS-Divinylbenzene
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Synthesis of Terpolymers at Mild Temperatures Using Dynamic Sulfur Bonds in PolyS-Divinylbenzene

Published on: May 20, 2019

8.1K

スーツ[4]アネ

Wenqi Liu1, Charlotte L Stern1, J Fraser Stoddart1,2,3

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

Journal of the American Chemical Society
|May 19, 2020
PubMed
まとめ
この要約は機械生成です。

研究者は,分子船内のボトル技術を使用して,新しいポルフィリンベースのスーツ [1] を作成した. この機械的に相互接続した分子は,スリップメカニズムによってサイクロファンの内部にカプセル化されたポルフィリンコアを特徴としています.

さらに関連する動画

Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection
08:37

Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection

Published on: December 10, 2015

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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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関連する実験動画

Last Updated: Dec 21, 2025

Synthesis of Terpolymers at Mild Temperatures Using Dynamic Sulfur Bonds in PolyS-Divinylbenzene
09:16

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Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection
08:37

Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection

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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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科学分野:

  • 超分子化学
  • 機械分子工学

背景:

  • 機械的に相互接続された分子 (MIM) は,ユニークな性質を持つ複雑な構造です.
  • MIM,特にスイートンの"ボトルの中の船"合成は,重要な合成課題を提示します.

研究 の 目的:

  • ポルフィリン基のスーツ[4]を合成する.
  • この複雑な分子構造を 構築するための"滑り"メカニズムを 示すために

主な方法:

  • ポルフィリン前駆体と突起したリガンドの合成.
  • 温度制御のスリップメカニズムによるトリサイクルオクタケーションサイクロファンの内部でのポルフィーリンの封じ込め.
  • ダイナミック・プロトン核磁気共鳴 (1H NMR) スペクトロスコーピーは,分子運動を研究する.

主要な成果:

  • ポルフィリン基スーツ[4]アンの合成に成功.
  • 容易なポルフィリン封入のためのスリップメカニズムの実証.
  • サイクロファンの空洞内の封装されたポルフィリンの急速な振動の観察.

結論:

  • この研究では,新しいポルフィリン基のスーツ[4]アンが報告され,機械的に相互接続された分子の分野を進めている.
  • 滑り込みメカニズムは 複雑な分子構造を構築するための 効率的な経路を提供します
  • 封じ込められたポルフィーリンの ダイナミックな振る舞いは これらのシステムの 独特な性質を強調しています