Fluoromethylidyne

Fluoromethylidyne
IUPAC name

Fluoromethylidyne
Systematic name

Fluromethylidyne (substitutive)
Fluoridocarbon(3•) (additive)
Other names

Carbon(I) fluoride

Carbon monofluoride
Fluorocarbyne

Fluoromethylyne
Identifiers
ChemSpider 10605706 Y
Jmol-3D images Image 1
Properties
Molecular formula CF
Molar mass 31.01 g mol−1
Exact mass 30.998403205 g mol-1
 Y (verify) (what is: Y/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Fluoromethylidyne is not a stable chemical species but a metastable radical containing one highly reactive carbon atom bound to one fluorine atom with the formula CF.[1] The carbon atom has a lone-pair and a single unpaired (radical) electron in the ground state.[2]

Ground-state fluoromethylidyne radicals can be produced by the ultraviolet photodissociation of dibromodifluoromethane at 248 nanometer wavelength.[3]

It readily and irreversibly dimerizes to difluoroethyne, also known as di- or perfluoroacetylene, or di- or perfluoroethylyne. Under certain conditions it can polymerise (trimerise) to hexafluorobenzene.

See also

References

  1. ^ F. J. Grieman, A. T. Droege, and P. C. Engelking (March 1983). "The a4Σ––X2Π transition in CF: A measurement of the term energy and bond length of a fluoromethylidyne metastable". Journal of Chemical Physics 78 (5): 2248–2254. doi:10.1063/1.445070. 
  2. ^ Ruzsicska, B. P.; Jodhan, A.; Choi; H. K. J., Strausz, O. P.; Bell, T. N. (1983). "Chemistry of carbynes: reaction of CF, CCl, and CBr with alkenes". J. Am. Chem. Soc. 105: 2489–2490. doi:10.1021/ja00346a072. 
  3. ^ J. Peeters, J. Van Hoeymissen, S. Vanhaelemeersch, and D. Vermeylen (February 1992). "Absolute rate constant measurements of CF(X2Π) reactions. 1. Reactions with O2, F2, Cl2 and NO". Journal of Physical Chemistry 96 (3): 1257–1263. doi:10.1021/j100182a043.