作为对低价值的活性化物支物的合物基集群的电子结构
Pere Miró1,2, S Genevieve Duggan1,2
1Department of Chemistry, University of Iowa, Iowa City, IA 52242, USA. pere-miro@uiowa.edu.
Dalton transactions (Cambridge, England : 2003)
|April 30, 2025
概括
早期的动因化物集群表现出复杂的氧化还原行为. 在硫化集群中, (III) 氧化为 (IV),而跨元素也可能经历氧化,这表明可调节的电子结构可用于催化.
科学领域:
- 无机化学 无机化学
- 计算化学的计算化学
- 材料科学 材料科学 材料科学
背景情况:
- 具有氧活性的不完整团 (M3{\displaystyle \mathrm {3} }-Q{\displaystyle \mathrm {3} }-Q{\displaystyle \mathrm {2} }-Q{\displaystyle \mathrm {3} }-Q{\displaystyle \mathrm {3} }-Q{\displaystyle \mathrm {3} }-Q{\displaystyle \mathrm {3} }-Q{\mathrm {3} }-Q{\mathrm {3} }-Q{3} }) 含有早期的动因子,对于理解电子结构至关重要.
- 在这些集群中,活性化物,特别是跨元素的行为仍然不完全理解.
研究的目的:
- 为了研究早期含有活性化素的石化集群的金属化,结合和电子结构.
- 为了阐明与硫化核协调的活性化物的氧化还原过程和氧化状态.
主要方法:
- 密度函数理论 (DFT) 的计算.
- 多引用方法,包括完整活动空间 (CAS) 计算.
- 分子中的原子量子理论 (QTAIM) 用于结合分析.
主要成果:
- (III) 通过与硫化核心的分子内氧化还原反应氧化为 (IV).
- DFT表明,超元素保持在 (An) III状态,而CAS计算表明氧化类似于.
- 证实了女化物和集群核心之间主要存在静电键.
- 在动因化物和较软的素化物之间观察到优选的软软相互作用.
结论:
- 早期的动因酸盐聚合物的电子结构和氧化还原活性高度依赖于特定的动因酸盐.
- 与硫化核协调的超元素表现出复杂的氧化还原行为,可能与相似.
- 结合相互作用和石化化物偏好提供了关于这些活性集群的稳定性和反应性的见解.
更多相关视频
08:12Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
Published on: December 5, 2015
12.2K
07:14Author Spotlight: Experimental Approaches for the Synthesis of Low-Valent Metal-Organic Frameworks from Multitopic Phosphine Linkers
Published on: May 12, 2023
2.5K
相关概念视频
Valence Bond Theory
8.3K
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...
8.3K
Crystal Field Theory - Octahedral Complexes
25.7K
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...
25.7K
Properties of Transition Metals
24.4K
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.
24.4K
Crystal Field Theory - Tetrahedral and Square Planar Complexes
40.7K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than...
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than...
40.7K
Colors and Magnetism
11.3K
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...
11.3K
