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Related Concept Videos

Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
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Coordination Number and Geometry

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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.
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Valence Bond Theory02:42

Valence Bond Theory

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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...
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Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
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Diels–Alder Reaction: Characteristics of Dienophiles01:24

Diels–Alder Reaction: Characteristics of Dienophiles

6.2K
In a Diels–Alder reaction, the diene is usually an electron-rich system and acts as a nucleophile, whereas the dienophile is electron-deficient and functions as an electrophile. Much like the diene, the nature of the dienophile significantly impacts the outcome of the reaction. 
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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
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Graphdiyne-Based Single-Atom Catalysts with Different Coordination Environments.

Xinliang Fu1, Xin Zhao2, Tong-Bu Lu2

  • 1Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, No. 94 Weijin Road, Nankai District, Tianjin, 300071, P. R. China.

Angewandte Chemie (International Ed. in English)
|February 1, 2023
PubMed
Summary

Graphdiyne (GDY) offers a unique platform for single-atom catalysts (ACs) due to its electronic properties and ability to anchor metal atoms. Coordination engineering of these GDY-based ACs is crucial for optimizing their performance in energy conversion applications.

Keywords:
Coordination EngineeringGraphdiyneSingle-Atom Catalysts

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Area of Science:

  • Materials Science
  • Catalysis
  • Nanotechnology

Background:

  • Graphdiyne (GDY) is a 2D carbon material with unique electronic properties.
  • GDY facilitates incomplete charge transfer and allows direct organometallic coordination of metal atoms.
  • This makes GDY an ideal support for constructing single-atom catalysts (ACs).

Purpose of the Study:

  • To review the progress in designing GDY-based ACs.
  • To highlight the relationship between coordination engineering and catalytic performance.
  • To discuss future prospects of GDY-based ACs in energy conversion.

Main Methods:

  • Review of state-of-the-art research on GDY-based ACs.
  • Analysis of coordination environments in GDY-supported single atoms.
  • Correlation of structural features with catalytic activity.

Main Results:

  • GDY's tunable electronic structure and M-C coordination bonds are key for ACs.
  • The coordination environment significantly influences the catalytic performance of GDY-based ACs.
  • Rational design strategies for GDY-ACs are emerging.

Conclusions:

  • GDY is a promising platform for developing highly efficient single-atom catalysts.
  • Coordination engineering is essential for tailoring GDY-ACs for specific catalytic reactions.
  • Further research on GDY-ACs holds potential for advancements in energy conversion technologies.