一系列的内分体金属-BN富勒烯超原子结构
Jia Wang1, Huanming Zhang1, Meiqi Wang1
1College of Information Technology, Jilin Normal University, Siping 136000, China.
ACS omega
|July 1, 2024
概括
这项研究证实,含有乙化物的化富勒烯是具有独特电子性质的超原子. 它们的稳定性降低和反转的轨道能量水平为设计纳米级材料提供了新的可能性.
科学领域:
- 材料科学 材料科学 材料科学
- 量子化学 是一个量子化学.
- 纳米技术纳米技术
背景情况:
- 超原子是先进的功能和光电子材料的基本组成部分.
- 内分体金属化 (BN) 富勒是一种新型的超原子结构.
研究的目的:
- 为了理论上研究基于乙化物的内分体BN富勒伦的电子结构和特性:U@B12N12,Cm@B12N12和U@B16N16.
- 分析超原子轨道的起源,以及对电子构造和稳定性的活性化物结合的影响.
主要方法:
- 用密度函数理论 (DFT) 的计算来建模电子结构.
- 分析电子配置,轨道能量水平,轨道组成和能量差距.
- 计算电离电位和电子亲和度,以评估稳定性.
主要成果:
- 确认U@B12N12,Cm@B12N12和U@B16N16是具有特定电子配置的超原子.
- 与之前的超原子研究相比,在轨道能量水平上观察到一种新的"翻转现象".
- 演示了actinide的结合减少了能量差距,并导致较低的电离潜力和更高的电子亲和力,表明稳定性下降.
结论:
- 这些含有actinide的BN烯代表了超原子家族的新增.
- 独特的电子特性,包括轨道翻转和降低稳定性,为设计具有可调性特征的纳米级材料提供了新的途径.
- 在定义超原子性质方面,BN形轨道和动因化原子轨道之间的杂交是至关重要的.
相关概念视频
Exceptions to the Octet Rule
28.1K
Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:
28.1K
Lattice Centering and Coordination Number
9.6K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
Types of Unit Cells
Imagine taking a large number of identical...
9.6K
Valence 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
Metallic 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
Crystal Field Theory - Octahedral Complexes
26.3K
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...
26.3K
Hybridization of Atomic Orbitals I
46.9K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
46.9K


