伪化物离子作为配体来调整多金属CU (I) 组件的架构和发光
Constance Lecourt1, Sayed Muktar Hossain2, Chendong Xu1
1Univ Rennes, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)─UMR 6226, F-35000 Rennes, France.
Inorganic chemistry
|March 28, 2024
概括
这项研究使用各种联结体和链接体合成了新型铜协调化合物,产生离散的金属循环和协调聚合物. 这项研究探讨了连接体特性如何影响分子架构和维度.
科学领域:
- 协调化学 协调化学
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
背景情况:
- 铜(I) 双金属单元是复杂结构的多功能构建模块.
- 伪化物和子联体提供多种协调模式.
- 控制分子架构是设计功能材料的关键.
研究的目的:
- 合成和描述新的四金属和八金属铜组件.
- 为了研究连接体结构和链接器类型对产生的架构的影响.
- 为了探索合成的铜化合物的光物理性质.
主要方法:
- 预组装的Cu(I) 双金属单元与伪化物和化碳连接器的反应.
- 离散四金属金属循环和一维协调聚合物的合成.
- 使用X射线衍射和光谱方法进行结构性表征.
- 对分子内和分子间参数进行分析,以合理化结构.
主要成果:
- 成功制备了三个离散的四金属金属循环,使用 bis ((diphenylphosphino) 甲和 bis ((diphenylphosphino) 胺连接物与伪化物连接器.
- 合成了三种类似梯子的一维协调聚合物和使用四酸基联体的八金属金属循环.
- 证明了连接体长度,固态阻碍和非共价相互作用决定了组件的拓和维度.
结论:
- 连接体和连接器的选择显著影响铜协调组件的形成.
- 理性设计原则可以应用于控制分子架构的维度和拓.
- 合成的铜 (I) 化合物表现出有趣的光物理特性,需要进一步研究.
相关概念视频
02:51Metal-Ligand Bonds
20.8K
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...
20.8K
02:42Valence Bond Theory
8.5K
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...
8.5K
02:58Crystal Field Theory - Octahedral Complexes
26.4K
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...
26.4K
03:02Colors and Magnetism
11.7K
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...
11.7K
01:09Complexation Equilibria: Factors Influencing Stability of Complexes
369
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...
369
02:37Metallic Solids
18.4K
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....
18.4K