的三种氧化状态 (I/II/III) 综合体由铁亚波氨酸
Fang Wang1, Zi-Bin Zhong1, Ri-Xin Jia1
1Key Laboratory for Special Functional Materials of Ministry of Education, National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Materials Science and Engineering, Henan University, Kaifeng 475004, China.
Inorganic chemistry
|April 8, 2024
概括
合成和表征了 (II) 硫酸氨酸复合物. 氧化还原反应揭示了新的氧化状态,反应性研究显示了与化,酸和硫酸连接体的优先N-协调.
科学领域:
- 协调化学 协调化学
- 有机金属化学 有机金属化学
- 材料科学 材料科学 材料科学
背景情况:
- thiaporphyrins 是一种具有独特电子和结构性质的宏循环配体.
- 类的复合物在催化和生物无机化学中具有重要意义.
- 了解-硫复合物的氧化还原行为和协调化学对于开发新的功能材料至关重要.
研究的目的:
- 为了合成和表征新的 (((II) 复合物与四 phenyl-21-thiaporphyrin 连接体.
- 为了研究这些 - 提亚波林复合物的氧化还原特性和协调行为.
- 探索 (II) 前体与各种无机配体的反应性.
主要方法:
- 五坐标高旋转[CoIICl(STTP]和正方形平面低旋转CoIISTTP(BArF24) 复合物的合成.
- 使用单个X射线衍射,NMR,EPR,SQUID磁力测量和DFT计算进行表征.
- 化学氧化还原反应以产生Co (I) 和Co (III) 物种以及使用N,OCN和SCN的反应性研究.
主要成果:
- 两种不同的(II) 硫酸复合物具有不同的几何形状和自旋状态,已成功合成和表征.
- 建立了单电子还原和氧化通路,产生稳定的Co (I) 和Co (III) 复合体.
- 与亚化物,酸盐和硫酸盐的反应显示,与中心相比,N-协调是优先的.
结论:
- 这项研究提供了对 (II) 硫酸氨酸复合物的合成,结构,氧化还原行为和反应性的全面了解.
- 这些发现突出显示了 thioporphyrin 连接体在稳定各种氧化状态中的多功能性.
- 与伪化物反应中的优先N-协调为特定应用提供了对联体设计的见解.
相关概念视频
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
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
02:54Coordination Compounds and Nomenclature
21.3K
In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
21.3K
02:58Properties of Transition Metals
25.8K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
25.8K
02:57Coordination Number and Geometry
15.7K
For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
15.7K