Fluoromethylidyne
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IUPAC name
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Other names
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Identifiers | |
3889-75-6 | |
ChemSpider | 10605706 |
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Jmol-3D images | Image |
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Properties | |
CF• | |
Molar mass | 31.0091 g mol−1 |
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | |
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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 dimerises to difluoroacetylene, also known as difluoroethyne, perfluoroacetylene, or di- or perfluoroethylyne. Under certain conditions it can hexamerise to hexafluorobenzene.
See also
References
- ↑ 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.
- ↑ 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.
- ↑ 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.