Search research articles

关于 JoVE

概览领导团队博客 JoVE 帮助中心

作者

出版流程编辑委员会范围与政策同行评审常见问题投稿

图书馆员

用户评价订阅访问资源图书馆顾问委员会常见问题

研究

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments 存档

教育

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual 教师资源中心教师网站

使用条款与条件

相关概念视频

Formation of Complex Ions

Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序

Same author

Structural Evolution and Coordination Behavior of Ta<sup>5+</sup> in Binary Li<sub>2</sub>O-Ta<sub>2</sub>O<sub>5</sub> Melts: <i>In Situ</i> High-Temperature Raman and High-Energy X-ray Diffraction Studies.

Inorganic chemistry·2026

Same author

In Situ High-Temperature Raman Spectroscopy and Simulations for Correlating Structure Evolution with Viscosity in the Binary Potassium Titanate System.

Analytical chemistry·2025

Same author

Threefold coordinated germanium in a GeO<sub>2</sub> melt.

Nature communications·2023

Same author

Quantitative Studies on Local Structure of Molten Binary Potassium Germanates.

Inorganic chemistry·2023

Same author

BaGeO<sub>3</sub>: A Mid-IR Transparent Crystal with Superstrong Raman Response.

Inorganic chemistry·2020

Same author

In Situ Raman Spectroscopy and DFT Studies of the Li<sub>2</sub>GeO<sub>3</sub> Melt Structure.

Inorganic chemistry·2019

Search research articles

相关实验视频

Updated: Feb 22, 2026

Preparation of Binary and Ternary Deep Eutectic Systems

Preparation of Binary and Ternary Deep Eutectic Systems

Published on: October 31, 2019

在Au-Si系统中深度美食现象背后的结构转型

Xue Zhang^1,2, Dianjin Xi^1,2, Hailong Wang^1,2

¹University of Science and Technology of China, Hefei 230026, China.

Inorganic chemistry

|February 20, 2026

概括

黄金- (Au-Si) 系统中的深层化现象是由转移稳定的Au4Si晶体的形成解释的. DFT计算显示,由于电子转移,Au-Au和Au-Si键较弱,这有助于化.

更多相关视频

Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions

Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions

Published on: June 13, 2015

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Published on: November 15, 2013

相关实验视频

Last Updated: Feb 22, 2026

Preparation of Binary and Ternary Deep Eutectic Systems

Preparation of Binary and Ternary Deep Eutectic Systems

Published on: October 31, 2019

Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions

Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions

Published on: June 13, 2015

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Published on: November 15, 2013

科学领域:

材料科学材料科学材料科学
计算材料科学科学计算材料科学
固态化学固态化学

背景情况:

黄金- (Au-Si) 系统中的深层学现象是一个长期存在的难题.
了解它的结构起源对于基础科学和实际应用都至关重要.

研究的目的:

调查奥西系统中深层感现象的结构基础.
阐明推动转移稳定相的形成和融化的原子层机制.

主要方法:

使用密度函数理论 (DFT) 的计算.
进行了声密度状态 (PDOS),能量分析,水晶轨道汉密尔顿人口 (COHP) 和希尔什菲尔德人口分析.

主要成果:

DFT证实了能量有利的 (Si) 扩散到金 (Au) 格子中,形成了转移稳定的Au4Si晶体.
一个以身体为中心的立方体 (bcc) Au4Si 结构被确定为eutectic 行为的关键,具有较弱的 Au-Au 和 Au-Si 键.
从Au转移到Si的价值电子和在高温下强化的原子振动会削弱键并促进融化.

结论:

这项研究为Au-Si系统的深层感行为提供了基于结构和结合的解释.
转基因稳定的bcc-Au4Si形成和随后的键体减弱被认为是这种现象的主要驱动因素.