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相关概念视频

Molecular Orbital Theory II03:51

Molecular Orbital Theory II

Molecular Orbital Energy Diagrams
Atomic Orbitals02:44

Atomic Orbitals

An atomic orbital represents the three-dimensional regions in an atom where an electron has the highest probability to reside. The radial distribution function indicates the total probability of finding an electron within the thin shell at a distance r from the nucleus. The atomic orbitals have distinct shapes which are determined by l, the angular momentum quantum number. The orbitals are often drawn with a boundary surface, enclosing densest regions of the cloud.
The Aufbau Principle and Hund's Rule03:02

The Aufbau Principle and Hund's Rule

To determine the electron configuration for any particular atom, we can build the structures in the order of atomic numbers. Beginning with hydrogen, and continuing across the periods of the periodic table, we add one proton at a time to the nucleus and one electron to the proper subshell until we have described the electron configurations of all the elements. This procedure is called the aufbau principle, from the German word aufbau (“to build up”). Each added electron occupies the subshell of...
Hybridization of Atomic Orbitals I03:24

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 and Hybridized Orbitals02:38

Valence Bond Theory and Hybridized Orbitals

According to valence bond theory, a covalent bond results when: (1) an orbital on one atom overlaps an orbital on a second atom, and (2) the single electrons in each orbital combine to form an electron pair. The strength of a covalent bond depends on the extent of overlap of the orbitals involved. Maximum overlap is possible when the orbitals overlap on a direct line between the two nuclei.
A σ bond (single bond in a Lewis structure) is a covalent bond in which the electron density is...
Hybridization of Atomic Orbitals II03:35

Hybridization of Atomic Orbitals II

sp3d and sp3d 2 Hybridization

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相关实验视频

Updated: Jun 28, 2026

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
10:42

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

Published on: March 22, 2019

从N2中的多个轨道产生高波.

Brian K McFarland1, Joseph P Farrell, Philip H Bucksbaum

  • 1PULSE Institute, SLAC, Menlo Park, CA 94025, USA, and Departments of Physics and Applied Physics, Stanford University, Stanford, CA 94305, USA.

Science (New York, N.Y.)
|November 1, 2008
PubMed
概括
此摘要是机器生成的。

研究人员观察到较低的分子轨道影响N2分子中的高波生成 (HHG). 这一发现对于理解激光激发分子中的超快电子动态至关重要.

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Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
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Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex

Published on: July 27, 2022

Harmonic Nanoparticles for Regenerative Research
09:23

Harmonic Nanoparticles for Regenerative Research

Published on: May 1, 2014

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Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
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Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

Published on: March 22, 2019

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
10:52

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex

Published on: July 27, 2022

Harmonic Nanoparticles for Regenerative Research
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Harmonic Nanoparticles for Regenerative Research

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科学领域:

  • 量子化学 是一个量子化学.
  • 分子光谱学 分子光谱学
  • 一秒钟的科学科学

背景情况:

  • 高波生成 (HHG) 是产生超短光脉冲的关键过程.
  • 理论模型预测,低于最高占用分子轨道 (HOMO) 的分子轨道应该影响HHG.
  • 这些较低的轨道对这些轨道的贡献缺乏实验证据.

研究的目的:

  • 实验性地研究HOMO以下的分子电子状态对激光驱动的HHG的影响.
  • 探索HOMO-1轨道在N2分子的HHG过程中的作用.
  • 推进对分子中超快电子动态的理解.

主要方法:

  • 在N2分子上进行了高波生成 (HHG) 光谱.
  • 分子对齐是受控的,N2分子的方向垂直于激光极化.
  • 由此产生的HHG频谱被分析为特征特征.

主要成果:

  • 在旋转半复苏时,在HHG频谱中观察到一个明显的最大值.
  • 这种光谱特征为HOMO-1轨道的贡献提供了证据.
  • 结果表明,HOMO以下的电子状态对HHG的影响.

结论:

  • 这项研究提供了第一个对影响HHG的较低分子轨道的实验观测.
  • 这些发现对于全面了解子秒和子秒尺度上的电子运动至关重要.
  • 这项工作为控制和探测分子电子动态开辟了新的途径.