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Related Concept Videos

Halogens03:01

Halogens

23.6K
Group 17 elements, known as halogens, are nonmetals. At room temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine a solid. Astatine is a highly unstable radioactive element, so currently, most of its properties are unknown due to its short half-life. Tennessine is a synthetic element also predicted to be in this group. 
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Network Covalent Solids02:18

Network Covalent Solids

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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...
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Bond Energies and Bond Lengths02:49

Bond Energies and Bond Lengths

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Stable molecules exist because covalent bonds hold the atoms together. The strength of a covalent bond is measured by the energy required to break it, that is, the energy necessary to separate the bonded atoms. Separating any pair of bonded atoms requires energy — the stronger a bond, the greater the energy required to break it.
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Peptide Bonds02:43

Peptide Bonds

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A peptide bond covalently attaches amino acids through a dehydration reaction. One amino acid's carboxyl group and another amino acid's amino group combine, releasing a water molecule. The resulting bond is the peptide bond. The products that such linkages form are peptides. As more amino acids join this growing chain, the resulting chain is a polypeptide. Each polypeptide has a free amino group at one end. This end has the N-terminal, or the amino-terminal, and the other end has a free...
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Bonding in Metals02:32

Bonding in Metals

52.8K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”. 
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Ionic Bonds00:42

Ionic Bonds

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Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
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A three-dimensional cubic halogen-bonded network.

Michael C Pfrunder1, Aidan J Brock1, Joshua J Brown1

  • 1School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Queensland 4072, Australia. j.clegg@uq.edu.au.

Chemical Communications (Cambridge, England)
|April 4, 2018
PubMed
Summary
This summary is machine-generated.

Researchers designed a novel 3D cubic halogen-bonded network using metal-containing acceptors and linear donors. This first-of-its-kind neutral material exhibits a unique seven-fold interpenetrated structure, advancing supramolecular chemistry.

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Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Crystallography

Background:

  • The rational design of supramolecular architectures is crucial for developing advanced materials.
  • Halogen bonding is a key interaction in constructing ordered networks.
  • Metal-containing components offer unique properties to supramolecular assemblies.

Purpose of the Study:

  • To synthesize and characterize a novel three-dimensional (3D) halogen-bonded network.
  • To explore the use of metal-containing acceptors in constructing such networks.
  • To report the first neutral, metal-containing 3D halogen-bonded network.

Main Methods:

  • Crystallization of a network from an octahedral metal-containing halogen bond acceptor and a linear ditopic donor.
  • Structural analysis using X-ray diffraction to determine network topology and interpenetration.
  • Characterization of the material's properties.

Main Results:

  • Successful preparation of a 3D cubic halogen-bonded network.
  • The network exhibits the α-Po pcu topology.
  • The structure is seven-fold interpenetrated.
  • This represents the first reported neutral, metal-containing 3D halogen-bonded network.

Conclusions:

  • The study demonstrates the feasibility of creating complex 3D supramolecular architectures via halogen bonding.
  • The reported material is a significant advancement in the field of metal-containing halogen-bonded networks.
  • This work opens avenues for designing new functional materials based on similar principles.