阿斯的素 (I) 复合物:关于结构和结合性质的理论观点
Hao Luo1, Ze-Kai Li1, Zhuo-Wei Zhang1
1College of Chemistry, Sichuan University, Chengdu 610064, P. R. China. jingsu@scu.edu.cn.
Physical chemistry chemical physics : PCCP
|April 23, 2025
概括
阿斯 (At) 可以形成稳定的素 (I) 复合体,类似于更轻的素. 这项研究揭示了At介导复合物的独特结合特性,促进了协调化学和放射性标记应用.
科学领域:
- 无机化学 无机化学 有机化学
- 理论化学 理论化学
- 超分子化学 超分子化学
背景情况:
- 离子形成线性三中心四电子 (3c4e) 素结合素 (I) 复合体 ([DXD]+).
- 研究仅限于较轻的素 (F,Cl,Br,I),不包括由于不稳定的同位素而导致的阿斯 (At).
研究的目的:
- 探索一个At介导的3c4e素(I) 复合体 ([DAtD]+) 的结构和结合特性.
- 调查易斯基,替代剂和素类型对这些复合物的影响.
- 了解相对论效应在At-素结合中的作用.
主要方法:
- 相对论密度函数理论 (DFT) 的计算.
- 结合集群方法使用单,双和扰动三次激发 (CCSD ((T)) 计算.
- 对结构参数,粘合和电子结构的分析.
主要成果:
- 阿斯 (At) 形成稳定,线性[DAtD]+复合体,具有相同的键长,类似于较轻的素.
- 相互作用的物理性质和电子结构类似于较轻的素 (I) 复合体.
- 在考虑旋转轨道合时,素极化性和D[DX]+相互作用之间的相关性被分解为At.
结论:
- 阿斯可以参与3c4e素结合,扩大已知的素 (I) 复合物的范围.
- 这些发现为Astatine协调化学和放射性标记中的潜在应用提供了洞察力.
- 相对论效应,特别是旋转轨道合,对于准确描述AT结合性质至关重要.
更多相关视频
![The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F54498.jpg&w=3840&q=50)
12:43The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique
Published on: November 28, 2016
8.4K
10:42Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
Published on: December 29, 2016
10.6K
相关概念视频
02:45Alkyl Halides
15.5K
Structural Properties
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...
15.5K
03:01Halogens
18.1K
Group 17 elements, known as halogens, are nonmetals. At room temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine a solid. Astatine is a highly unstable radioactive element, so currently, most of its properties are unknown due to its short half-life. Tennessine is a synthetic element also predicted to be in this group.
18.1K
02:42Valence 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
02:38Electrophilic Addition to Alkynes: Halogenation
8.0K
Introduction
Halogenation is another class of electrophilic addition reactions where a halogen molecule gets added across a π bond. In alkynes, the presence of two π bonds allows for the addition of two equivalents of halogens (bromine or chlorine). The addition of the first halogen molecule forms a trans-dihaloalkene as the major product and the cis isomer as the minor product. Subsequent addition of the second equivalent yields the tetrahalide.
Halogenation is another class of electrophilic addition reactions where a halogen molecule gets added across a π bond. In alkynes, the presence of two π bonds allows for the addition of two equivalents of halogens (bromine or chlorine). The addition of the first halogen molecule forms a trans-dihaloalkene as the major product and the cis isomer as the minor product. Subsequent addition of the second equivalent yields the tetrahalide.
8.0K
02:54Lewis Structures of Molecular Compounds and Polyatomic Ions
34.2K
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
34.2K
02:27Predicting Molecular Geometry
33.9K
VSEPR Theory for Determination of Electron Pair Geometries
33.9K