尖咬角 POP 和 PSP 类型的体及其三核铜 (I) 复合体:合成和光发光特性
Franziska Flecken1, Anna Knapp1, Toni Grell2
1Institute for Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstr. 15, 76131 Karlsruhe, Germany, Mail: schirin.hanf@kit.edu.
Inorganic chemistry
|August 3, 2023
概括
研究人员使用-氧- (POP) 和-硫- (PSP) 连接物合成了三核铜复合体. 改变连接体骨干转换了光,使金属复合体中的光学特性能够合理调整.
科学领域:
- 无机化学 无机化学 有机化学
- 材料科学 材料科学 材料科学
- 摄影化学的使用.
背景情况:
- 铜复合物在催化和材料科学中至关重要.
- 设计具有特定咬角的配体会影响复杂的结构和特性.
- 金属复合物的光学特性是可调的,但需要合理的设计策略.
研究的目的:
- 使用POP和PSP连接体合成新型三核铜复合体.
- 为了研究连接体脊柱异原子 (O vs. S) 对光学特性的影响.
- 为了将实验发现与理论计算相对应,以合理调整属性.
主要方法:
- 在现场配体的形成和与铜 (I) 前体的反应.
- 用不同的化物合成各种三核铜复合物.
- 光发光谱学用于研究光光学性质.
- 理论计算 (例如,DFT) 来理解电子转换.
主要成果:
- 成功合成了三核铜复合体的形式 [Cu3 ((μ3-Hal) 2 ((μ-PXP) 3)) PF6 (X=O,S;Hal=Cl,Br,I).
- 通过不同的固体测量方法获得相关的含化合物复合物和集群.
- 证明可以通过将POP转换为PSP连接体支架来关闭光.
- 理论研究提供了对电子转换的见解,这些电子转换负责观察到的光学行为.
结论:
- 在POP/PSP连接体骨干中的异构原子是控制光学特性的一个关键因素.
- 这项工作提供了一个合理的方法来调整铜复合体的光发光.
- 这些发现为设计基于过渡金属复合物的先进光响应材料铺平了道路.
相关概念视频
Colors and Magnetism
11.9K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
11.9K
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
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
Complexometric Titration: Ligands
995
Different monodentate and polydentate ligands are used as complexing agents in complexometric titration reactions. The formation of complexes by mono- and bidentate ligands involves two or more intermediate steps, limiting their use as complexing agents. In comparison, polydentate ligands can form complexes with metal ions in a single-step process, facilitating sharper end points. This means polydentate ligands, such as amino carboxylic acid derivatives, are most commonly employed in...
995

![[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)
