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Related Concept Videos

Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
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Imagine taking a large number of identical...
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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.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
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.
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...
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Related Experiment Video

Updated: Jul 6, 2026

Synthesis, Hemoglobin Encapsulation and Biorthogonal PEGylation in Hierarchically Porous UiO-66 Nanoparticles for Oxygen Delivery Applications
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Synthesis, Hemoglobin Encapsulation and Biorthogonal PEGylation in Hierarchically Porous UiO-66 Nanoparticles for Oxygen Delivery Applications

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A biporous coordination framework with high H2 storage density.

Wenbin Yang1, Xiang Lin, Junhua Jia

  • 1School of Chemistry, University of Nottingham, University Park, Nottingham, UK.

Chemical Communications (Cambridge, England)
|April 11, 2008
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel coordination framework for efficient hydrogen storage. This material shows excellent hydrogen adsorption capacity at low pressures, making it promising for practical applications.

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Area of Science:

  • Materials Science
  • Chemistry
  • Nanotechnology

Background:

  • Hydrogen storage is crucial for clean energy technologies.
  • Developing materials with high adsorption capacity at low pressures remains a challenge.

Purpose of the Study:

  • To synthesize and characterize a novel biporous three-dimensional coordination framework.
  • To evaluate the hydrogen adsorption properties of the new material.

Main Methods:

  • Synthesis of a (3,6)-connected coordination framework.
  • Gas adsorption measurements, specifically for hydrogen (H2).

Main Results:

  • The framework demonstrated excellent H2 adsorption at low pressures (<= 1 bar).
  • High H2 adsorption density was achieved, indicating efficient storage potential.

Conclusions:

  • The reported coordination framework is a promising candidate for low-pressure hydrogen storage.
  • The material's properties suggest potential for practical hydrogen adsorption applications.