ナイトロ装飾された金属有機枠にアセチレンを最適に結合させる
Thien D Duong1, Sergey A Sapchenko1,2,3, Ivan da Silva4
1School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , United Kingdom.
Journal of the American Chemical Society
|October 5, 2018
まとめ
研究者らは初めて金属有機フレームワーク (MOF) でアセチレンがニトログループと結合することを観察した. この機能化はアセチレン吸収能力を高め,ガスの貯蔵アプリケーションにMOFを有望にします.
科学分野:
- 材料科学
- 化学について
- クリスタルグラフィー
背景:
- メタル・オーガニック・フレームワーク (MOF) は,調節可能な性質を持つ多孔性材料です.
- アセチレン吸収はガス貯蔵と分離に不可欠です.
- MOFの機能化により,吸収能力が向上する.
研究 の 目的:
- MOFにおけるニトロ (-NO2) グループへのアセチレン結合を結晶学的に観察する.
- MFM-102におけるアセチレン吸収に対する -NO2機能化の影響を調査する.
- 機能化されたMOFにおけるアセチレン結合のメカニズムを解明する.
主な方法:
- クリスタルグラフィー
- ニュートロン散射
- 弾性のない中性子散乱
- ガス吸附量 (BET表面積,アセチレン吸収量)
主要な成果:
- MOFにおける -NO2グループへのアセチレン結合の最初の結晶観測.
- MFM-102-NO2は,BETの表面積が15%減少したにもかかわらず,アセチレン吸収が28%増加しました (298K,1バーで192cm3g-1).
- -NO2群と開いた金属部位はアセチレンと結合する
結論:
- -NO2機能化は,MOFにおけるアセチレン吸収を高めるための効果的な戦略です.
- -NO2グループと開いた金属部位の結合作用により,アセチレン結合が生じます.
- この研究は,MOFの設計のためのガスフレームワークの相互作用に関する基本的な洞察を提供します.
さらに関連する動画
関連する概念動画
02:51Metal-Ligand Bonds
24.3K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
24.3K
02:32Bonding in Metals
52.5K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”.
52.5K
02:37Metallic Solids
20.7K
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....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.7K
03:06Alkali Metals
24.8K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
Table 1: Properties of the alkali metals
24.8K
01:29Preparation of Amines: Reduction of Oximes and Nitro Compounds
4.7K
Oximes can be reduced to primary amines using catalytic hydrogenation, hydride reduction, or sodium metal reduction. The reduction of aliphatic and aromatic nitro compounds to primary amines takes place by either catalytic hydrogenation or by using active metals like Fe, Zn, and Sn in the presence of an acid.
Though catalytic hydrogenation can reduce nitrobenzenes, the reduction is nonselective in the presence of other functional groups. For instance, if nitrobenzene contains an aldehyde group,...
Though catalytic hydrogenation can reduce nitrobenzenes, the reduction is nonselective in the presence of other functional groups. For instance, if nitrobenzene contains an aldehyde group,...
4.7K
02:18The Equilibrium Binding Constant and Binding Strength
15.1K
The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:
15.1K