双发射环金属化合物与异化联体
Craig M Anderson1, Matthew W Greenberg1, Christopher N LaFratta1
1Department of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-On-Hudson, New York, New York 12504, United States.
ACS omega
|October 27, 2025
概括
新的 ((II) 复合物,包括C^N合性胺基连接体和多种异酸连接体,进行了合成和表征. 这些化合物表现出独特的光物理性质,烯衍生复合物显示出明显的双排放,为循环金属化学提供了洞察力.
科学领域:
- 有机金属化学 有机金属化学
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
背景情况:
- 循环金属 ((II) 复合物由于其独特的光物理和电子特性而引起人们的兴趣.
- 用定制的配体合成新的 (II) 化合物,可以产生具有特定应用性的材料.
研究的目的:
- 合成和表征新型循环金属 ((II) 化合物,其中包括C^N化胺基连接物和各种异酸连接物.
- 为了研究这些新合成的 (II) 复合物的光物理特性.
- 探索不同HC^N连接体骨干 (thiophene与) 对光谱和光物理行为的影响.
主要方法:
- 通过 HC^N 连接物与[Pt2Me4(μ-SMe2) 2 的反应合成 (II) 复合物,然后进行异酸连接物替代.
- 使用多核NMR光谱,红外光谱和单晶X射线衍射 (SCXRD) 的表征.
- 光物理研究涉及紫外线/紫外线吸收,发射和短暂吸收 (TA) 光谱,并补充DFT和TDDFT计算.
主要成果:
- 成功合成了正方形平面 (((II) 复合物与阳离子C^N,甲基和异酸联体.
- 提奥芬衍生复合物显示出高分辨率的双排放,而衍生复合物显示出较少分辨率的波段.
- 光谱和计算数据提供了对复合体电子结构和光物理行为的洞察.
结论:
- 这项研究成功地合成和表征了新型循环金属 ((II) 复合物与可调节的异酸连接体.
- 联体骨干的性质显著影响光物理性质,特别是排放特性.
- 这些发现有助于理解 (II) 复合物的结构-性质关系,以实现潜在的光电子应用.
更多相关视频
19:58Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
10.2K
09:45Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
10.8K
相关概念视频
02:34Structural Isomerism
21.5K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
21.5K
02:51Metal-Ligand Bonds
23.9K
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...
23.9K
02:52Stereoisomerism
13.8K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
13.8K
01:19Complexation Equilibria: The Chelate Effect
1.2K
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...
1.2K
01:23Properties of Organometallic Compounds
1.6K
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.
1.6K
01:17Thermal Electrocyclic Reactions: Stereochemistry
2.5K
The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
2.5K