索马-伊瓦莫托型SCO复合物Fe ((quinazoline) 2[Au ((CN) 2]2使用的是quinazoline类型的配体
Kosuke Kitase1, Daisuke Akahoshi2, Takafumi Kitazawa1,3
1Department of Chemistry, Toho University, Chiba 274-8510, Japan. kitazawa@chem.sci.toho-u.ac.jp.
Dalton transactions (Cambridge, England : 2003)
|May 9, 2024
概括
研究人员合成了一种新的Soma-Iwamoto型复合物Fe(quinazoline) 2[Au(CN) 2,2表现出独特的双层结构和逐渐旋转交叉现象. 同时还开发了一种具有结的相关单核复合体.
科学领域:
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
- 超分子化学 超分子化学
背景情况:
- 包括霍夫曼型和索马-伊瓦莫托型复合物在内的桥协调聚合物被广泛研究.
- 这些材料往往具有有趣的磁性和结构性质.
研究的目的:
- 综合和描述一个新的索马-伊瓦莫托类型的复合体.
- 研究新综合体的结构性,磁性和旋转交叉性质.
- 探索相关的单核复合体及其相互作用.
主要方法:
- 化学合成Fe (((quinazoline) 2[Au ((CN) 2) 2和Fe ((H2O) 2 ((quinazoline) 2[Au ((CN) 2) 2的化学合成.
- 结晶和结构分析.
- 测量磁感应度以观察旋转交叉 (SCO).
主要成果:
- 一种新型的索马-伊瓦莫托型复合物Fe(quinazoline) 2[Au(CN) 2 2被成功合成.
- 这种复杂的特点是双层结构,具有显著的Au-Au相互作用.
- 观察到一个渐进的旋转交叉现象,磁性易感性的变化表明了这一现象.
- 一个相关的单核复合体Fe ((H2O) 2 ((quinazoline) 2[Au ((CN) 2) 2被合成和表征,显示了结相互作用.
结论:
- 新的Soma-Iwamoto型复合物扩大了蓝色桥接协调聚合物的库.
- 观察到的旋转交叉现象凸显了这些材料中可调节的磁性质的潜力.
- 独特的结构图案,包括Au-Au相互作用和键网络,为进一步的材料设计提供了途径.
更多相关视频
相关概念视频
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
03:02Colors and Magnetism
11.6K
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...
11.6K
02:34Structural Isomerism
19.2K
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...
19.2K
02:51Metal-Ligand Bonds
20.7K
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...
20.7K
00:43Complexometric Titration: Ligands
946
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...
946
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