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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.
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In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
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Diamagnetic Shielding of Nuclei: Local Diamagnetic Current01:14

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An applied magnetic field causes the electrons present in the molecule to circulate, setting up a local diamagnetic current within the molecule. The local diamagnetic current arising from circulating sigma-bonding electrons induces a magnetic field, Blocal that opposes the applied magnetic field, B0. The effective magnetic field experienced by these nuclei is given by the difference between the applied and local magnetic fields in a phenomenon called local diamagnetic shielding. Essentially,...
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Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

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In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
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Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles
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Nitrogen Donor Protection for Atomically Precise Metal Nanoclusters.

Shang-Fu Yuan1,2, Wen-Di Liu1, Chun-Yu Liu1

  • 1Department of Chemistry Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, 100084, P. R. China.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|February 26, 2022
PubMed
Summary

Nitrogen donor ligands are emerging as effective stabilizers for atomically precise metal nanoclusters. This review highlights their synthesis, structure, and properties, offering insights for future nanocluster design.

Keywords:
catalysisligand engineeringmetal nanoclusternitrogen donor ligandstructure

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Area of Science:

  • * Nanomaterials Science
  • * Inorganic Chemistry
  • * Surface Chemistry

Background:

  • * Surface organic ligands critically influence the structure and properties of metal nanoclusters.
  • * Thiolate, phosphine, and alkynyl ligands are conventionally used.
  • * Nitrogen donor ligands are a recent addition to nanocluster stabilization.

Purpose of the Study:

  • * To review recent advancements in atomically precise metal nanoclusters stabilized by nitrogen donor ligands.
  • * To cover synthesis, total structure determination, and properties of these nanoclusters.
  • * To provide insights for rational design and modulation of N-donor-protected metal nanoclusters.

Main Methods:

  • * Comprehensive literature review of studies on N-donor-protected metal nanoclusters.
  • * Analysis of synthesis strategies for these nanoclusters.
  • * Examination of structural characterization and property evaluation methods.

Main Results:

  • * Nitrogen donor ligands offer a new avenue for stabilizing well-defined metal nanoclusters.
  • * Diverse types of nitrogen ligands have been successfully employed.
  • * These nanoclusters exhibit unique structural and property profiles.

Conclusions:

  • * Nitrogen donor ligands represent a promising class of protecting agents for metal nanoclusters.
  • * Further research can unlock the full potential of N-donor-protected nanoclusters.
  • * This review serves as a guide for future development in the field.