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相关概念视频

VSEPR Theory and the Basic Shapes02:52

VSEPR Theory and the Basic Shapes

Overview of VSEPR Theory
VSEPR Theory and the Effect of Lone Pairs04:01

VSEPR Theory and the Effect of Lone Pairs

Effect of Lone Pairs of Electrons on Molecule Geometry
Molecular Shape and Polarity03:37

Molecular Shape and Polarity

Dipole Moment of a Molecule
Hybridization of Atomic Orbitals II03:35

Hybridization of Atomic Orbitals II

sp3d and sp3d 2 Hybridization
Valence Bond Theory02:42

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...
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...

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相关实验视频

Updated: Jul 6, 2026

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2
11:27

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Published on: December 8, 2016

在伪四面体d7离子中,溶液和固态自旋交叉行为.

David M Jenkins1, Jonas C Peters

  • 1Division of Chemistry and Chemical Engineering, Arnold and Mabel Beckman Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, California 91125, USA.

Journal of the American Chemical Society
|October 14, 2005
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种新的伪四面体合金复合体,表现出热诱导的旋转交叉. 这一发现为创造自旋交叉材料提供了一条新的途径,它与传统的八面体设计不同.

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Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
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Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon
06:57

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

Published on: July 17, 2020

相关实验视频

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Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2
11:27

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2

Published on: December 8, 2016

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
10:28

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

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Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon
06:57

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

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科学领域:

  • 无机化学 无机化学
  • 材料科学 材料科学 材料科学
  • 磁电化学 磁电化学 磁电化学

背景情况:

  • 旋转交叉 (SCO) 现象对于开发分子开关和传感器至关重要.
  • 传统的SCO材料通常涉及伪八面体金属复合体.
  • 探索替代协调几何体对于扩大SCO材料设计至关重要.

研究的目的:

  • 描述一个新的伪四面体d7复合体.
  • 为了研究这个复合体在溶液和固态中的旋转交叉行为.
  • 探索四坐标平台对磁性SCO行为的潜力.

主要方法:

  • [PhBP3]Co(OSiPh3) 复合物的合成.
  • 在溶液和固态中测量磁敏度.
  • 伪四面体复合体的结构特征.

主要成果:

  • 伪四面体d7复合体,[PhBP3]Co(OSiPh3),表现出热诱导的旋转交叉.
  • 在溶液和固体状态中观察到自旋交叉行为.
  • 一个X型连接体和三脚辅助体的组合促进了磁性交叉.

结论:

  • 伪四面体协调几何学可以支持旋转交叉行为.
  • 这种四坐标平台与伪八面体对应物相比,为SCO材料提供了独特的方法.
  • 这些发现为设计新型磁性材料开辟了新的途径.