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{{Chembox | Watchedfields = changed | verifiedrevid = 455196803 | ImageFile = Bromofluoromethane.png | ImageSize = 175px | ImageFile1 = Bromofluoromethane-3D-vdW.png | ImageSize1 = 175px | PIN = Bromo(fluoro)methane <!-- Parentheses are used according to Subsection P-16.5.1.3 of Nomenclature of Organic Chemistry – IUPAC Recommendations and Preferred Names 2013 (Blue Book) --> | OtherNames = 溴氟甲烷<br />CFC 31B1<br />R 31B1 |Section1={{Chembox Identifiers | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 55059 | SMILES1 = BrCF | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = 1S/CH2BrF/c2-1-3/h1H2 | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = LHMHCLYDBQOYTO-UHFFFAOYSA-N | CASNo_Ref = {{cascite|correct|??}} | CASNo = 373-52-4 | PubChem = 61108 | SMILES = C(F)Br | InChI = 1/CH2BrF/c2-1-3/h1H2 }} |Section2={{Chembox Properties | Formula = CH<sub>2</sub>BrF | MolarMass = 112.93 g/mol | Appearance = 易挥发液体 | Density = 1.76g/cm<sup>3</sup><ref>[http://www.chemicalbook.com/ChemicalProductProperty_CN_CB6154291.htm 氟溴甲烷] {{Wayback|url=http://www.chemicalbook.com/ChemicalProductProperty_CN_CB6154291.htm |date=20191129065748 }}. Chemical Book. [2017-8-22]</ref> | MeltingPt = | BoilingPt = {{convert|19|C|K}} | Solubility = }} |Section3={{Chembox Structure | CrystalStruct = | Coordination = | MolShape = Tetrahedral }} |Section4={{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = }} |Section7={{Chembox Hazards | ExternalSDS = | EUClass = | MainHazards = | NFPA-H = | NFPA-F = | NFPA-R = | NFPA-S = | RPhrases = | SPhrases = | RSPhrases = | FlashPt = | AutoignitionPt = | ExploLimits = | PEL = }} |Section8={{Chembox Related | OtherAnions = [[氯溴甲烷]]<BR>[[溴碘甲烷]] | OtherCations = | OtherFunction = | OtherFunction_label = | OtherCpds = }} }} '''氟溴甲烷'''是一种混合[[卤代甲烷]],可溶于[[乙醇]],易溶于[[氯仿]]。 其[[标准摩尔熵]](''S''<sup><s>o</s></sup><sub>gas</sub>)为276.3 J/(mol·K),[[热容]](''c<sub>p</sub>'')为49.2 J/(mol·K)。 == 制备 == 氟溴甲烷可由[[氟甲烷]]的溴化反应制备:<ref name=Bai>白占旗, 丁元胜, 黄瑛. [http://www.ixueshu.com/document/2b7c79209d63da80.html 氟溴甲烷的制备及应用] {{Wayback|url=http://www.ixueshu.com/document/2b7c79209d63da80.html |date=20170822174433 }}[J]. 浙江化工, 2005, 36(9):30-31.</ref> : CH<sub>3</sub>F + [[溴|Br<sub>2</sub>]] → CH<sub>2</sub>BrF + HBr [[二溴氟甲烷]]的电解还原,或者通过和[[还原剂]][[钠汞齐]]或[[氢化三丁基锡]]的反应也能得到氟溴甲烷。 [[氟乙酸银]]和[[溴]]在50~120°C反应,可以得到氟溴甲烷:<ref name=Bai /> : FCH<sub>2</sub>COOAg + Br<sub>2</sub> → CH<sub>2</sub>FBr + AgBr + CO<sub>2</sub> [[二溴甲烷]]和[[氟化亚汞]]反应,也能得到氟溴甲烷:<ref name=Organikis>Ασκήσεις και προβλήματα Οργανικής Χημείας Ν. Α. Πετάση 1982, pp 185, §7.2.8.;pp 186, §7.3.1.</ref> : 2 CH<sub>2</sub>Br<sub>2</sub> + Hg<sub>2</sub>F<sub>2</sub> → 2 CH<sub>2</sub>FBr + Hg<sub>2</sub>Br<sub>2</sub> ==化学性质== 氟溴甲烷可以发生[[取代反应]]:<ref name=Organikis /> :<math>\mathrm{CH_2FBr + NaCN \xrightarrow{-NaBr} FCH_2CN \xrightarrow{+ NaCN} NCCH_2CN + NaF} </math></div> == 应用 == 氟溴甲烷是中间体、医药和其它化学品生产过程中的重要试剂。由于[[臭氧破坏潜势]]达0.73,其使用收到限制。它的同位素标记化合物CH<sub>2</sub>Br<sup>18</sup>F可用于放射化学。 == 参考文献 == {{reflist}} ==拓展阅读== *{{cite journal | author = G. Cazzoli |author2=C. Puzzarini |author3=A. Baldacci |author4=A. Baldan |last-author-amp=yes | year = 2007 | title = Determination of the molecular dipole moment of bromofluoromethane: microwave Stark spectra and ab initio calculations | journal = J. Mol. Spectrosc. | volume = 241 | issue = 115 | pages =| pmid = | doi = 10.1016/j.jms.2006.11.004| url = }}<!--| accessdate = 2007-06-29--> * [http://msa.lib.ohio-state.edu/suppmat/v241.i1.pp112-115//mmc1.pdf Determination of the molecular dipole moment of bromofluoromethane]{{Dead link}} {{卤代甲烷}} [[Category:氟代烷烃]] [[Category:溴代烷烃]] [[Category:卤代甲烷]] [[Category:二卤代烃]]
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