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'''Tricarbon''' or '''C<sub>3</sub>''' is a small [[carbon]] cluster first [[spectroscopy|spectroscopically]] observed in the beginning 20th century in the tail of a comet by [[William Huggins]] and subsequently identified in [[stellar atmosphere]]s. Tricarbon can be found in interstellar space and can be produced in the laboratory by a process called [[laser ablation]]. Small carbon clusters like tricarbon and dicarbon are regarded as soot precursors and are implicated in the formation of certain industrial [[diamond]]s and in the formation of [[fullerene]]s. The ground state [[molecular geometry]] of tricarbon has been identified as linear via its characteristic symmetric and antisymmetric stretching and bending vibrational modes and bears [[bond length]]s of 129 to 130 [[picometer]] corresponding to those of [[alkene]]s. The [[ionization potential]] is determined experimentally at 11 to 13.5 [[electron volt]].<ref name="Nicolas">{{cite journal | last = Nicolas | first = Christophe | authorlink = | coauthors = ''et al.'' | year = 2006 | month = | title = Vacuum Ultraviolet Photoionization of C<sub>3</sub> | journal = [[Journal of the American Chemical Society|J. Am. Chem. Soc.]] | volume = 128 | issue = 1 | pages = 220&ndash;226 | doi = 10.1021/ja055430 | url = | accessdate = | quote = | pmid = 16390150 }}</ref> In contrast to the linear tricarbon molecule the '''C<sub>3</sub>'''<sup>+</sup> [[cation]] is bent.
'''Tricarbon''' or '''C<sub>3</sub>''' is a small [[carbon]] cluster first [[spectroscopy|spectroscopically]] observed in the beginning 20th century in the tail of a comet by [[William Huggins]] and subsequently identified in [[stellar atmosphere]]s. Tricarbon can be found in interstellar space and can be produced in the laboratory by a process called [[laser ablation]]. Small carbon clusters like tricarbon and [[dicarbon]] are regarded as soot precursors and are implicated in the formation of certain industrial [[diamond]]s and in the formation of [[fullerene]]s. The ground state [[molecular geometry]] of tricarbon has been identified as linear via its characteristic symmetric and antisymmetric stretching and bending vibrational modes and bears [[bond length]]s of 129 to 130 [[picometer]] corresponding to those of [[alkene]]s. The [[ionization potential]] is determined experimentally at 11 to 13.5 [[electron volt]].<ref name="Nicolas">{{cite journal | last = Nicolas | first = Christophe | authorlink = | coauthors = ''et al.'' | year = 2006 | month = | title = Vacuum Ultraviolet Photoionization of C<sub>3</sub> | journal = [[Journal of the American Chemical Society|J. Am. Chem. Soc.]] | volume = 128 | issue = 1 | pages = 220&ndash;226 | doi = 10.1021/ja055430 | url = | accessdate = | quote = | pmid = 16390150 }}</ref> In contrast to the linear tricarbon molecule the '''C<sub>3</sub>'''<sup>+</sup> [[cation]] is bent.


C<sub>3</sub> has also been identified as a transient species in various [[combustion]] reactions.{{Citation needed|date=September 2009}}
C<sub>3</sub> has also been identified as a transient species in various [[combustion]] reactions.{{Citation needed|date=September 2009}}

Revision as of 11:25, 18 June 2012

Tricarbon
Skeletal formula of tricarbon with all lone pairs shown
Names
Other names
Triatomic carbon[citation needed]
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/C3/c1-3-2 checkY
    Key: NVLRFXKSQQPKAD-UHFFFAOYSA-N checkY
  • [C]=C=[C]
Properties
C3
Molar mass 36.033 g·mol−1
Thermochemistry
237.27 J K−1 mol−1
820.06 kJ mol−1
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Tricarbon or C3 is a small carbon cluster first spectroscopically observed in the beginning 20th century in the tail of a comet by William Huggins and subsequently identified in stellar atmospheres. Tricarbon can be found in interstellar space and can be produced in the laboratory by a process called laser ablation. Small carbon clusters like tricarbon and dicarbon are regarded as soot precursors and are implicated in the formation of certain industrial diamonds and in the formation of fullerenes. The ground state molecular geometry of tricarbon has been identified as linear via its characteristic symmetric and antisymmetric stretching and bending vibrational modes and bears bond lengths of 129 to 130 picometer corresponding to those of alkenes. The ionization potential is determined experimentally at 11 to 13.5 electron volt.[1] In contrast to the linear tricarbon molecule the C3+ cation is bent.

C3 has also been identified as a transient species in various combustion reactions.[citation needed]

The generation of C3 was investigated by Professor Emeritus Philip S. Skell of Pennsylvania State University in the 1960s.[citation needed]

See also

References

  1. ^ Nicolas, Christophe (2006). "Vacuum Ultraviolet Photoionization of C3". J. Am. Chem. Soc. 128 (1): 220–226. doi:10.1021/ja055430. PMID 16390150. {{cite journal}}: Cite has empty unknown parameter: |month= (help); Unknown parameter |coauthors= ignored (|author= suggested) (help)

Further reading

  • Gaydon, Alfred G. (1979). Flames: their structure, radiation and temperature (4. ed., rev. ed.). London: Chapman and Hall. ISBN 0-412-15390-4. {{cite book}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  • Hinkle, Kenneth W. (1988). "Detection of C3 in the Circumstellar Shell of IRC+10216". Science. 241 (4871): 1319–1322. doi:10.1126/science.241.4871.1319. PMID 17828935. {{cite journal}}: Cite has empty unknown parameter: |month= (help); Unknown parameter |coauthors= ignored (|author= suggested) (help)