Chicken wire (chemistry) Ball

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In chemistry the term chicken wire is used in different contexts. Most of them relate to the similarity of the regular hexagonal (honeycomb-like) patterns found in certain chemical compounds to the mesh structure commonly seen in real chicken wire.


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Examples

Polycyclic aromatic hydrocarbons

Polycyclic aromatic hydrocarbons or graphenes--including fullerenes, carbon nanotubes, and graphite--have a hexagonal structure that is often described as chicken wire-like.

Hexagonal molecular structures

A hexagonal structure that is often described as chicken wire-like can also be found in other types of chemical compounds such as:

  • Non-aromatic polycyclic hydrocarbons, e.g. steroids like cholesterol
  • Flat hexagonal hydrogen bonded trimesic acid (benzene-1,3,5-tricarboxylic acid), boric acid, or melamine-cyanuric acid complexes
  • Interwoven molecule chains in the inorganic polymer NaAuS
  • Complexes of the protein clathrin

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Additional information

Bond line notation

The skeletal formula is a method to draw structural formulas of organic compounds where lines represent the chemical bonds and the vertices represent implicit carbon atoms. This notation is sometimes jestingly called chicken wire notation.

Placeholder for organic compounds

Chicken wire is sometimes used as a placeholder name for any organic compound, similar to the use of the name John Doe.

Chemical joke

It is an old joke in chemistry to draw a polycyclic hexagonal chemical structure and call this fictional compound chickenwire. By adding one or two simple chemical groups to this skeleton, the compound can then be named following the official chemical naming convention. Examples are:

  • 1,2-Dimethyl-chickenwire in a cartoon by Nick D. Kim

Surface plots

In computational chemistry a chicken wire model or chicken wire surface plot is a way to visualize molecular models by drawing the polygon mesh of their surface (defined e.g. as the van der Waals radius or a certain electron density).

Source of the article : Wikipedia



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