| 词条 | Fluoromethylidyne |
| 释义 |
| Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 451372240 | ImageFileL1 = Fluoromethylidyne.png | ImageAltL1 = Skeletal formula of fluoromethylidyne | ImageFileR1 = Fluoromethylidyne radical spacefill.png | ImageAltR1 = Space-filling model of the fluoromethylidyne radical | IUPACName = {{Unbulleted list|Fluoromethylidyne (substitutive){{Citation needed|date=April 2012}}|Fluoridocarbon(•) (additive){{Citation needed|date=April 2012}} }} | OtherNames = {{Unbulleted list|Carbon(I) fluoride{{Citation needed|date=April 2012}}|Carbon monofluoride{{Citation needed|date=April 2012}}|Fluorocarbyne{{Citation needed|date=April 2012}}|Fluoromethylyne{{Citation needed|date=April 2012}} }} |Section1={{Chembox Identifiers | CASNo = 3889-75-6 | CASNo_Ref = {{cascite|changed|??}} | ChemSpiderID = 10605706 | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | SMILES = [C]-F | StdInChI = 1S/CF/c1-2 | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = ISOSXCFSIDVNNC-UHFFFAOYSA-N | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} }} |Section2={{Chembox Properties | Formula = CF• | MolarMass = 31.0091 g mol−1 }} }}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
References1. ^{{Cite journal | authors = F. J. Grieman, A. T. Droege, and P. C. Engelking |date=March 1983 | title = The a4Σ−–X2Π transition in CF: A measurement of the term energy and bond length of a fluoromethylidyne metastable | journal = Journal of Chemical Physics | volume = 78 | issue = 5 | pages = 2248–2254 |doi= 10.1063/1.445070 }} {{Organic-compound-stub}}2. ^{{cite journal |authors= Ruzsicska, B. P.; Jodhan, A.; Choi; H. K. J., Strausz, O. P.; Bell, T. N. |title= Chemistry of carbynes: reaction of CF, CCl, and CBr with alkenes |journal= J. Am. Chem. Soc. |volume= 105 |year= 1983 |pages= 2489–2490 |doi= 10.1021/ja00346a072 }} 3. ^{{Cite journal |author1=J. Peeters |author2=J. Van Hoeymissen |author3=S. Vanhaelemeersch |author4=D. Vermeylen |date=February 1992 | title = Absolute rate constant measurements of CF(X2Π) reactions. 1. Reactions with O2, F2, Cl2 and NO | journal = Journal of Physical Chemistry | volume = 96 | issue = 3 | pages = 1257–1263 |doi= 10.1021/j100182a043}} 2 : Free radicals|Reactive intermediates |
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