75-73-0Relevant academic research and scientific papers
A study of the gas phase reactions of various cations with two derivatives of SF6; SF5CF3 and SF5Cl
Atterbury, Clair,Critchley, Andrew D.J.,Kennedy, Richard A.,Mayhew, Chris A.,Tuckett, Richard P.
, p. 2206 - 2223 (2002)
A selected ion flow tube apparatus was used to investigate the positive ion chemistry of two derivatives of SF6; SF5CF3 and SF5Cl. This represents the first investigation of the positive ion chemistry of SF5Cl, and much of the data on SF5CF3 is being presented here for the first time. Rate coefficients and ion product branching ratios have been determined at room temperature (300 K) for reactions with the following twenty-two cations; Ne+, F+, Ar+, N2+, N+, CO+, CO2+, O+, N2O+, H2O+, O2+, SF4+, CF2+, SF+, SF2+, NO2+, SF5+, NO+, CF+, CF3+, SF3+, and H3O+ (listed in order of decreasing recombination energy). Comparisons are made in the text for the reactions of these ions with SF6. SF2+, NO2+, NO+, SF3+, and H3O+ are found to be unreactive with both of the derivatives. The majority of the other reactions proceed with rate coefficients which are close to the capture value. The exceptions are the reactions of O2+, SF+, SF5+, and CF3+ with SF5CF3, and SF4+ and SF5+ with SF5Cl, all of which have rate coefficients significantly less than the capture mechanism value. Several distinct processes are observed among the large number of reactions studied, including dissociative charge transfer and various abstraction channels. Non-dissociative charge transfer is not observed, implying that any parent ions formed dissociate rapidly to the fragment ions and associated neutrals.
Ab Initio/IGLO/GIAO-MP2 Studies of Fluorocarbocations: Experimental and Theoretical Investigation of the Cleavage Reaction of Trifluoroacetic Acid in Superacids
Prakash, G. K. Surya,Rasul, Golam,Burrichter, Arwed,Laali, Kenneth K.,Olah, George A.
, p. 9253 - 9258 (1996)
The structures of a number of fluorocarbocations were calculated at the correlated MP2/6-31G* level. 13C and 19F NMR chemical shifts of fluorocarbocations were calculated for the first time using IGLO and GIAO-MP2 methods.The data showed good correlation of calculated 19F and 13C NMR chemical shifts with the experimental shifts of fluorocarbocations.The correlation for GIAO-MP2-calculated 19F NMR chemical shifts with the experimental data is excellent.Using theoretical calculations as guidance, the protolytic cleavage of trifluoroacetic acid (CF3COOH) in superacid forming CF4 was also investigated experimentally and by ab initio calculations.This reaction is suggested to involve the gitonic CF3C(OH)(OH)2+ dication as an intermediate.
Synthesis of tetrafluoromethane by graphite fluorination with elemental fluorine
Pashkevich,Mukhortov,Petrov,Alekseev,Asovich,Barabanov
, p. 92 - 97 (2004)
Formation of high-temperature inverse wave of the filtration combustion of graphite fixed bed in fluorine was studied. Scientific principles of the industrial process of the tetrafluoromethane synthesis from graphite and fluorine were developed.
Fluorosulfates and perchlorates of xenon(II) and the salt [(FXeO)2S(O)F]+[AsF6]-
Wechsberg,Bulliner,Sladky,Mews,Bartlett, Neil
, p. 3063 - 3070 (1972)
Each of the fluorine ligands of XeF2 may be substituted by highly electronegative species. Interaction of XeF2 with the appropriate molar quantity of anhydrous acid yields FXeOSO2F (colorless, mp 36.6°), Xe(OSO2F)2 (pale yellow, mp 43-15°), FXeOClO3 (colorless, mp 16.5°), Xe(OClO3)2 (a yellow solid, which decomposes below 0°), and FXeOSO2CF3 and FXeOSO2-CH3 (both of which are colorless solids). All of the compounds are thermodynamically unstable and the last three compounds are known to be detonators. Decomposition of the fluorosulfates provides for the synthesis of high-purity S2O6F2. The acids HCl, HOSO2Cl, and HOC(CF3)3 do not yield Xe derivatives and are oxidized. Vibrational spectroscopic evidence indicates that the xenon atom in the Xe(II) compounds is similarly coordinated to Xe in XeF2 and FXeOSO2F. Attempts to prepare [XeOSO2F]+[MF6]- salts (M = Ru, As, Sb) have not been successful but the new cation [(FXeO)2S(O)F]+ has been isolated in the [AsF6]- salt. Efforts to prepare [(FXe)2L]+ (L- = CF3CO2-, Cl-) resulted in oxidation of L.
F2 + CF3I Dark Reaction. 1. Stoichiometry and Pressure-Dependent Kinetics
Johnson, D. E.,Whitehead, J. C.,Walters, E. A.,Dorko, E. A.
, p. 2543 - 2548 (1992)
The reaction between F2 and CF3I has been investigated over a wide range of pressures and flow velocities at 298 K.An induction time precedes a period of CF3I consumption which is well characterized by an exponential decrease in concentration over time.The CF3I disappearance rate as well as the induction time are dependent upon the concentration of the initial species, indicating that a chain reaction is responsible.CF3I and F2 react to give IF5, C2F6, and CF4 as end products (where the principal carbon-containing end product is CF4), suggesting that both IF and CF3 play an important role in the kinetics of the reaction.The apparent discrepancies of the previous studies of this reaction are shown to be related to experimental conditions.
METHOD FOR PRODUCING TETRAFLUOROMETHANE
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Paragraph 0059-0064, (2021/03/05)
Fluorine gas is introduced to a raw material liquid containing a reaction inducer and a fluorinated hydrocarbon represented by CpHqClrFs (in the formula, p is an integer of 3 to 18, q is an integer of 0 to 3, r is an integer of 0 to 9, and s is an integer of 5 to 30) and having no carbon-carbon unsaturated bond to give tetrafluoromethane. The reaction inducer is a halogen-containing carbon compound liquid at room temperature and pressure and is reacted with fluorine gas to induce a reaction of forming tetrafluoromethane from the fluorinated hydrocarbon and the fluorine gas. The reaction inducer is contained at a content of more than 0% by mass and not more than 10% by mass when the total content of the fluorinated hydrocarbon and the reaction inducer contained in the raw material liquid is 100% by mass.
METHOD FOR PRODUCING TETRAFLUOROMETHANE
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Paragraph 0062-0071, (2021/11/26)
Provided is a method for producing tetrafluoromethane, and the method is unlikely to damage a reaction apparatus and can produce tetrafluoromethane safely, inexpensively, and stably. To a raw material liquid (1) containing a reaction inducer and a fluorinated hydrocarbon represented by chemical formula CpHqClrFs (in the chemical formula, p is an integer of 3 or more and 18 or less, q is an integer of 0 or more and 3 or less, r is an integer of 0 or more and 9 or less, and s is an integer of 5 or more and 30 or less) and having no carbon-carbon unsaturated bond, fluorine gas is introduced to give tetrafluoromethane. The reaction inducer is a hydrocarbon polymer solid at normal temperature and pressure and is reacted with fluorine gas to induce a reaction of forming tetrafluoromethane from the fluorinated hydrocarbon and the fluorine gas.
METHOD FOR PRODUCING TETRAFLUOROMETHANE
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Paragraph 0058-0070, (2021/01/19)
A method for producing tetrafluoromethane as follows is unlikely to damage a reaction apparatus and can produce tetrafluoromethane safely, inexpensively, and stably. To a raw material liquid containing a fluorinated hydrocarbon represented by chemical formula CpHqClrFs (wherein p is an integer of 3 to 18, q is an integer of 0 to 3, r is an integer of 0 to 9, and s is an integer of 5 to 30) and having no carbon-carbon unsaturated bond, fluorine gas is introduced, and concurrently a reaction inducer is introduced in a gas state, giving tetrafluoromethane. The reaction inducer is reacted with fluorine gas to induce a reaction of forming tetrafluoromethane from the fluorinated hydrocarbon and the fluorine gas and is at least one reaction inducer selected from a hydrocarbon gaseous at normal temperature and pressure and hydrogen gas.
Decomposition characteristics of C5F10O/air mixture as substitutes for SF6 to reduce global warming
Li, Yi,Zhang, Xiaoxing,Xiao, Song,Chen, Qi,Wang, Dibo
, p. 65 - 72 (2018/02/14)
Sulfur hexafluoride (SF6) is widely used in the power industry but is a serious greenhouse gas. Many researchers committed to achieving sustainable development of the power industry are finding alternatives to SF6 gas. C5F10O performs well in terms of environmental protection, insulation, and safety and is a potential environment-friendly alternative gas. In this paper, the insulation and decomposition characteristics of C5F10O/air gas mixture were examined using gas-insulation performance test platform, and decomposition products were detected by gas chromatography–mass spectrometry. The formation mechanism and distribution of C5F10O decomposition products were analyzed through reactive molecular dynamics method and density functional theory. The influence of air on the decomposition of C5F10O was also evaluated. Results showed that the decomposition of C5F10O/air gas mixture mainly produces CF3[rad], C3F7[rad], C4F7O[rad], CO, CF2[rad], CF[rad], F[rad] and CF4. The breakdown voltage of C5F10O/air gas mixture decreased slightly after repeated breakdown tests, and CF4, C2F6, C3F8, C3F6, C4F10, CF2O were detected. These results can serve as a reference for the systematic comprehension of the decomposition characteristics of C5F10O/air gas mixture and for related engineering applications.
Carbon-Carbon Bond-Forming Reductive Elimination from Isolated Nickel(III) Complexes
Bour, James R.,Camasso, Nicole M.,Meucci, Elizabeth A.,Kampf, Jeff W.,Canty, Allan J.,Sanford, Melanie S.
supporting information, p. 16105 - 16111 (2016/12/22)
This manuscript describes the design, synthesis, characterization, and reactivity studies of organometallic NiIII complexes of general structure TpNiIII(R)(R1) (Tp = tris(pyrazolyl)borate). With appropriate selection of th
