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Related Concept Videos

Ionic Crystal Structures02:42

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Metallic Solids02:37

Metallic Solids

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...
Network Covalent Solids02:18

Network Covalent Solids

Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
Structures of Solids02:22

Structures of Solids

Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
Ionic Compounds: Formulas and Nomenclature03:34

Ionic Compounds: Formulas and Nomenclature

An element composed of atoms that readily lose electrons (a metal) can react with an element composed of atoms that readily gain electrons (a nonmetal) to produce ions through complete electron transfer. The compound formed by this transfer is stabilized by the electrostatic attractions (ionic bonds) between the oppositely charged ions.
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...

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Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
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The first solid composed of [As4V16O42(H2O)] clusters.

Shou-Tian Zheng1, Jie Zhang, Bing Li

  • 1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, PR China.

Dalton Transactions (Cambridge, England : 2003)
|October 16, 2008
PubMed
Summary

Researchers synthesized a novel polyoxovanadate containing arsenic and vanadium, featuring a unique [As4V16O42(H2O)] cluster. Magnetic studies revealed antiferromagnetic interactions between vanadium ions in this new material.

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Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry
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Last Updated: Jun 29, 2026

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
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Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)
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Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry
12:11

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Published on: April 8, 2020

Area of Science:

  • Inorganic Chemistry
  • Materials Science
  • Crystal Engineering

Background:

  • Polyoxometalates (POMs) are versatile nanoscale clusters with diverse structures and applications.
  • The incorporation of arsenic into polyoxovanadate frameworks is less explored, presenting opportunities for novel material discovery.
  • Diethylenetriamine (dien) is a common ligand used in coordination chemistry for stabilizing metal complexes.

Purpose of the Study:

  • To hydrothermally synthesize and characterize a new arsenic-containing polyoxovanadate.
  • To elucidate the crystal structure and dimensionality of the synthesized compound.
  • To investigate the magnetic properties arising from the vanadium centers within the POM structure.

Main Methods:

  • Hydrothermal synthesis for crystal growth.
  • Elemental Analysis (EA), Infrared Spectroscopy (IR), and Thermogravimetric Analysis (TGA) for chemical and thermal characterization.
  • Single crystal X-ray diffraction for precise structural determination.
  • Magnetic susceptibility measurements to probe magnetic interactions.

Main Results:

  • Successful synthesis of a new polyoxovanadate, [Zn2(dien)3][[Zn(dien)]2As4V16O42(H2O)] x 3H2O (1).
  • Compound 1 represents the first reported polyoxometalate structure containing the [As4V16O42(H2O)] cluster.
  • The structure features one-dimensional anionic chains formed by [As4V16O42(H2O)] clusters linked by dinuclear zinc complexes, with isolated dinuclear zinc complexes in interchain regions.
  • Magnetic susceptibility studies indicate the presence of antiferromagnetic interactions between VIV cations.

Conclusions:

  • A novel arsenic-vanadium polyoxometalate with a unique cluster has been synthesized and structurally characterized.
  • The compound exhibits a 1D chain structure stabilized by zinc complexes, showcasing intricate crystal engineering.
  • The observed antiferromagnetic interactions highlight the magnetic properties inherent to the VIV ions within this new POM framework.