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Related Concept Videos

Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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...
Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

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...
Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

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...
Coordination Number and Geometry02:57

Coordination Number and Geometry

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.
Coordination Compounds and Nomenclature02:54

Coordination Compounds and Nomenclature

In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

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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Related Experiment Video

Updated: May 14, 2026

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles
07:47

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles

Published on: November 27, 2015

Complex oxide-noble metal conjugated nanoparticles.

Jun-Ling Guo1, Yao-De Chiou, Wen-I Liang

  • 1Department of Materials Science and Engineering, National Chiao Tung University, HsinChu, Taiwan, ROC.

Advanced Materials (Deerfield Beach, Fla.)
|February 22, 2013
PubMed
Summary
This summary is machine-generated.

Researchers created novel hybrid nanoparticles by combining noble metals with complex oxides. This advancement expands the possibilities for next-generation materials through enhanced nanoparticle conjugation.

Related Experiment Videos

Last Updated: May 14, 2026

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles
07:47

Reverse Microemulsion-mediated Synthesis of Monometallic and Bimetallic Early Transition Metal Carbide and Nitride Nanoparticles

Published on: November 27, 2015

Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemistry

Background:

  • Hybrid nanoparticles (NPs) offer advanced functionalities by integrating multiple components.
  • Noble metal/ternary complex oxide hybrids represent a promising class of nanomaterials.

Purpose of the Study:

  • To establish a method for synthesizing noble metal/ternary complex oxide hybrid NPs.
  • To investigate gold-spinel (Au-CoFe2O4) and gold-perovskite (Au-SrTiO3) heterodimer NPs as model systems.

Main Methods:

  • Utilizing pulsed laser ablation in liquids (PLAL) for NP synthesis.
  • Characterizing the resulting hybrid nanostructures.

Main Results:

  • Successfully synthesized gold-spinel and gold-perovskite heterodimer NPs.
  • Demonstrated the feasibility of creating diverse NP conjugates using complex oxides.

Conclusions:

  • Pulsed laser ablation in liquids provides a versatile platform for hybrid NP fabrication.
  • Complex oxides significantly expand the range of achievable nanoparticle conjugations for advanced materials.