Na,Pt,およびRh金属複合体のマクロサイクルリガンドとしてのオープンケージフルレン
Rui Gao1, Zhen Liu1, Zeyu Liu1
1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of the Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
Journal of the American Chemical Society
|August 1, 2023
まとめ
研究者らは,ナトリウム,ロジウム,プラチナと安定した複合体を形成できる開いたケージフルレンの配分を合成しました. この機能化されたフルレンの誘導体は,多用途の協調化学と新しい応用の可能性を示しています.
科学分野:
- 超分子化学
- 材料科学
- 有機合成
背景:
- フルレンは炭素基の分子で 独特の電子的,構造的性質を持っています
- フラーレンの機能化は,その性質と用途を調整するために不可欠です.
- オープンケージフルレンは内部空洞と複合性の反応部位を提供します.
研究 の 目的:
- 新しいフラーレンの産物を合成する
- 機能化されたフルレンの金属イオンとの協調化学を調査する.
- 結果となる金属複合体と超分子構造を特徴づける.
主な方法:
- マラプラドは,近隣のトリオル分子を酸化して,オープンケージフルレンを生成する.
- ナトリウムイオン,ロジウムカルボニル塩化ジマー,およびプラチナテトラキス ((トリフェニルフォスフィン)) との複合反応.
- 構造の解明のための単一結晶X線 difraktion.
主要な成果:
- オープンケージの [60]フルレンの誘導体の合成が成功しました.
- カーボキシル基とカーボニル基はポリデント酸リガンドとして作用し,安定したナトリウム複合体を形成する.
- アイソメリックロジウム複合体と安定したプラチナ複合体は,穴での反応によって形成された.
- カーボキシル酸素と閉じ込められた水分子の間の水素結合が確認されました
結論:
- 合成されたオープンケージフルレンの誘導体は,多用途の調整能力を発揮します.
- 孔の周りの酸素原子の配置は金属イオンとの強い相互作用を容易にします.
- この研究は,機能化されたフルレンの協調化学と超分子組成における可能性を強調している.
関連する概念動画
Metal-Ligand Bonds
21.0K
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...
21.0K
Crystal Field Theory - Octahedral Complexes
26.8K
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...
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...
26.8K
Complexation Equilibria: The Chelate Effect
555
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...
555
Valence Bond Theory
8.8K
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...
8.8K
Complexation Equilibria: Factors Influencing Stability of Complexes
405
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...
405
Properties of Organometallic Compounds
1.0K
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
1.0K


