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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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Metallic Solids02:37

Metallic Solids

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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
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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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Crystal Field Theory - Octahedral Complexes02:58

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Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
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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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Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

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Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
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Updated: Jun 27, 2025

The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique
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Chemical Flexibility of Atomically Precise Metal Clusters.

Si Li1, Na-Na Li1,2, Xi-Yan Dong1,2

  • 1College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.

Chemical Reviews
|May 2, 2024
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Summary
This summary is machine-generated.

Ligand-protected metal clusters offer unique hybrid properties due to their inorganic core and organic shell. This review explores their chemical flexibility, driven by structural and thermodynamic factors, enabling diverse applications.

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Area of Science:

  • Materials Science
  • Chemistry
  • Nanotechnology

Background:

  • Ligand-protected metal clusters exhibit hybrid properties, merging inorganic cores with organic shells.
  • Their chemical flexibility is key to developing new materials and functionalities.
  • Understanding this flexibility is crucial for advancing diverse applications.

Purpose of the Study:

  • To review the origins of chemical flexibility in ligand-protected metal clusters.
  • To analyze structural aspects, bonding, and thermodynamic effects influencing flexibility.
  • To highlight mechanisms, transformations, and property modifications driven by this flexibility.

Main Methods:

  • Structural analysis of intra-cluster bonding, inter-cluster interactions, and cluster-environment interactions.
  • Examination of metal-to-ligand ratios and thermodynamic effects.
  • Elucidation of transformation mechanisms and resultant property changes.

Main Results:

  • Chemical flexibility arises from core structure, ligand shell, and external interactions.
  • Dynamic transformations lead to altered structures and modified physicochemical properties.
  • Metal clusters demonstrate significant potential in various applications.

Conclusions:

  • The chemical flexibility of metal clusters is a tunable property rooted in their structure and thermodynamics.
  • Harnessing this flexibility opens avenues for novel materials and advanced applications.
  • Future research should address challenges and explore new opportunities in metal cluster science.