相关实验视频

Updated: Jul 1, 2025

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV

Published on: December 29, 2016

XB₂Bi₂ (X = Si,Ge,Sn,Pb):五原子平面四坐标Si/Ge/Sn/Pb集群,具有20个价值电子

Yan-Xia Jin¹, Jin-Chang Guo¹

¹Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China.

International journal of molecular sciences

|March 13, 2024

概括

研究人员发现了新的平面四坐标,,锡和集群,具有独特的风扇形结构和双重芳香度,扩大了对异国化学物种的理解.

科学领域:

无机化学无机化学有机化学
计算化学计算化学
材料科学材料科学材料科学

背景情况:

平面四坐标,,锡和 (ptSi/Ge/Sn/Pb) 种类是罕见的,并且难以合成.
了解这些奇异物种的电子结构和稳定性对于推进化学键理论至关重要.

研究的目的:

报告发现和描述了一系列新的五原子平面四坐标,,锡和集群.
调查这些新型XB2Bi2星团的结构,电子和稳定性质.

主要方法:

使用无偏密度函数理论 (DFT) 搜索来定位潜在的全球最小值.
为了准确的能源评估,进行了高层合集群的单,双和三次 (CCSD ((T)) 计算.
波恩-奥本海默分子动力学 (BOMD) 模拟用于评估集群强度.

主要成果:

一系列风扇形的XB2Bi2 (X = Si,Ge,Sn,Pb) 星团与20个价值电子被确定为全球最小值.
这些ptSi/Ge/Sn/Pb集群表现出显著的结构稳定性,并具有独特的粘合安排.
集群显示 2π/2σ 双重芳香度,由 (4n + 2) Hückel 规则证实.

结论:

发现的XB2Bi2星团代表了平面四坐标主群元素领域的重大进展.
这些发现为外来化学物种的电子结构和芳香度提供了新的见解.
这项研究为设计和合成具有独特电子性质的新型无机材料开辟了道路.

关键词:

有20个价值电子.双倍的 π/σ 芳香度.平面四坐标的.平面四坐标的.

更多相关视频

The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique

The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique

Published on: November 28, 2016

Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups

Synthesis of Nine-atom Deltahedral Zintl Ions of Germanium and their Functionalization with Organic Groups

Published on: February 11, 2012

相关概念视频

Hybridization of Atomic Orbitals I

Hybridization of Atomic Orbitals I

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...

Valence Bond Theory

Valence Bond Theory

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...

VSEPR Theory and the Basic Shapes

VSEPR Theory and the Basic Shapes

Overview of VSEPR Theory

VSEPR Theory and the Effect of Lone Pairs

VSEPR Theory and the Effect of Lone Pairs

Effect of Lone Pairs of Electrons on Molecule Geometry

Hybridization of Atomic Orbitals II

Hybridization of Atomic Orbitals II

sp3d and sp3d 2 Hybridization

Coordination Number and Geometry

Coordination Number and Geometry

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.