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词条 Chicken wire (chemistry)
释义

  1. Examples

      Polycyclic aromatic hydrocarbons    Hexagonal molecular structures  

  2. Additional information

      Bond line notation    Placeholder for organic compounds    Chemical joke    Surface plots  

  3. References

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.

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.[1][2][3]

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[4]
  • Flat hexagonal hydrogen bonded trimesic acid (benzene-1,3,5-tricarboxylic acid),[5] boric acid, or melamine-cyanuric acid complexes[6]
  • Interwoven molecule chains in the inorganic polymer NaAuS [7]
  • Complexes of the protein clathrin[8]

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.[9] This notation is sometimes jestingly called chicken wire notation.[10][11][12]

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.{{Citation needed|date=November 2007}}

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 [https://web.archive.org/web/20070927205644/http://www.nearingzero.net/screen_res/nz079.jpg 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). [15]

References

1. ^{{cite web|url=http://www.calpoly.edu/~rbrown/soccerballs.html |title=Soccerballs |publisher=Calpoly.edu |date= |accessdate=2013-11-24}}
2. ^{{cite web|url=http://antoine.frostburg.edu/chem/senese/101/glossary/g.shtml |title=General Chemistry Online: Glossary: |publisher=Antoine.frostburg.edu |date= |accessdate=2013-11-24}}
3. ^{{cite web|url=http://www.sciam.com/article.cfm?articleID=00099397-1687-1C75-9B81809EC588EF21 |title=Space Chemicals: Scientific American |publisher=Sciam.com |date= |accessdate=2013-11-24}}
4. ^{{cite web|url=http://www.gethealthygetsmart.com/articles/cholesterol_excess_fat.asp |title=Get Healthy...Get Smart |publisher=Gethealthygetsmart.com |date= |accessdate=2013-11-24 |deadurl=yes |archiveurl=https://web.archive.org/web/20120717052743/http://www.gethealthygetsmart.com/articles/cholesterol_excess_fat.asp |archivedate=2012-07-17 |df= }}
5. ^{{cite web|url=http://www.scs.uiuc.edu/zimmerman/papers/63.pdf |accessdate=February 3, 2005 }}{{dead link|date=May 2016|bot=medic}}{{cbignore|bot=medic}}
6. ^{{cite journal| author = Andrew D. Burrows| year = 2004| title = Crystal Engineering Using Multiple Hydrogen Bonds| journal = Structure and Bonding| volume = 108| issue =| pages = 55–96| pmid =| issn=0081-5993 | doi = 10.1007/b14137| url = http://www.springerlink.com/content/tfb8mwejrw0m7v2r/}}
7. ^{{cite journal | pmid = 11670705 | volume=37 | issue=21 | title=Flux Synthesis of LiAuS and NaAuS: "Chicken-Wire-Like" Layer Formation by Interweaving of (AuS)(n)(n)(-) Threads. Comparison with alpha-HgS and AAuS (A = K, Rb) |date=October 1998 | journal=Inorg Chem | pages=5583–5587 | doi = 10.1021/ic980360b | last1 = Axtell Ea | first1 = 3rd | last2 = Liao | first2 = JH | last3 = Kanatzidis | first3 = MG}}
8. ^http://bio.winona.msus.edu/wilson/cell%20biology/unit3revANSWER.doc{{dead link|date=November 2016 |bot=InternetArchiveBot |fix-attempted=yes }}
9. ^Template {{webarchive |url=https://web.archive.org/web/20041130194037/http://www.usm.maine.edu/~newton/Chy251_253/Lectures/LewisStructures/LewisStructures.html |date=November 30, 2004 }}
10. ^{{cite web|url=http://kalee.tock.com/chem32/NMR1/7s.html |title=Chem 32 Virtual Manual |publisher=Kalee.tock.com |date= |accessdate=2013-11-24}}
11. ^{{cite web|url=http://kalee.tock.com/chem32/ste1/ |title=Stereochemistry and Chirality Part I Problems |publisher=Kalee.tock.com |date=1995-11-07 |accessdate=2013-11-24}}
12. ^{{cite web|url=http://kalee.tock.com/chem32/elena1.html |title=Chem 32 Virtual Manual |publisher=Kalee.tock.com |date= |accessdate=2013-11-24}}
13. ^http://scsg9.unige.ch/fln/eng/partie1a.html
14. ^http://zombie.imsb.au.dk/molscript/commands.html
15. ^{{cite web|url=http://www.avatar.se/molscript/doc/interface.html |title=MolScript v2.1: Interface to external objects |publisher=Avatar.se |date= |accessdate=2013-11-24}}
16. ^http://www.hsn.csiro.au/conscript/
17. ^http://www.cscs.ch/molekel/manual/manual.4.3.html

1 : Molecular geometry

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