Methylene, difluoro-

• Formula: CF₂
• Molecular weight: 50.0075
• IUPAC Standard InChI: InChI=1S/CF2/c2-1-3 Copy

  
• IUPAC Standard InChIKey: LTVOKYUPTHZZQH-UHFFFAOYSA-N Copy
• CAS Registry Number: 2154-59-8
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Other names: Calcium difluoride; Difluoromethylene
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Gas phase ion energetics data
  • Ion clustering data
  • Vibrational and/or electronic energy levels
  • References
  • Notes
• Other data available:
  • Reaction thermochemistry data
• Data at other public NIST sites:
  • Microwave spectra (on physics lab web site)
  • Electron-Impact Ionization Cross Sections (on physics web site)
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 5.0
• Options:
  • Switch to calorie-based units

Data at NIST subscription sites:

• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.

Gas phase thermochemistry data

Go To: Top, Gas phase ion energetics data, Ion clustering data, Vibrational and/or electronic energy levels, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Gas Phase Heat Capacity (Shomate Equation)

C_p° = A + B*t + C*t² + D*t³ + E/t²
H° − H°_298.15= A*t + B*t²/2 + C*t³/3 + D*t⁴/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t²/2 + D*t³/3 − E/(2*t²) + G
    C_p = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Ion clustering data, Vibrational and/or electronic energy levels, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

View reactions leading to CF₂⁺ (ion structure unspecified)

Electron affinity determinations

Ionization energy determinations

Appearance energy determinations

Ion clustering data

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

(CF₃^- • 4294967295) +  = CF₃^-

By formula: (CF₃^- • 4294967295CF₂) + CF₂ = CF₃^-

Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Ion clustering data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Marilyn E. Jacox

State:   B ?

State:   A

State:   a

State:   B

State:   X

Additional references: Jacox, 1994, page 97; Jacox, 1998, page 196; Jacox, 2003, page 137; Powell and Lide, 1966; Mathews, 1966; Basco and Hathorn, 1971; Kirchhoff, Lide, et al., 1973; Akins, King, et al., 1979; Duignan, Hudgens, et al., 1982; Charo and De Lucia, 1982; Hack and Langel, 1983; Hack and Wilms, 1986; Booth and Hancock, 1988; Ibuki, Hiraya, et al., 1989; Hermann, 1990; Creasey, Lambert, et al., 1990; Cameron and Kable, 1998; Hansen, Mader, et al., 2000

Notes

References

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Ion clustering data, Vibrational and/or electronic energy levels, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Ehlert, 1969
Ehlert, T.C., Bonding in C₁ and C₂ fluroides, J. Phys. Chem., 1969, 73, 949-953. [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Schwartz, Davico, et al., 1999
Schwartz, R.L.; Davico, G.E.; Ramond, T.M.; Lineberger, W.C., Singlet-triplet splittings in CX2 (X = F, Cl, Br, I) dihalocarbenes via negative ion photoelectron spectroscopy, J. Phys. Chem. A, 1999, 103, 41, 8213-8221, https://doi.org/10.1021/jp992214c . [all data]

Murray, Leopold, et al., 1988
Murray, K.K.; Leopold, D.G.; Miller, T.M.; Lineberger, W.C., Photoelectron Spectroscopy of the Halocarbene Anions HCF^-, HCCl^-, HCBr^-, HCI^-, CF₂^-, and CCl₂^-, J. Chem. Phys., 1988, 89, 9, 5442, https://doi.org/10.1063/1.455596 . [all data]

Born, Ingemann, et al., 1994
Born, M.; Ingemann, S.; Nibbering, N.M.M., Heats of formation of mono-halogen-substituted carbenes. Stability and reactivity of CHX(center dot-) (X=F, Cl, Pr, and I) radical anions, J. Am. Chem. Soc., 1994, 116, 16, 7210, https://doi.org/10.1021/ja00095a025 . [all data]

Harland and Thynne, 1972
Harland, P.W.; Thynne, J.C.J., Ionisation of perfluorocyclobutane by electron impact, Int. J. Mass Spectrom. Ion Phys., 1972, 10, 11. [all data]

Thynne and MacNeil, 1970
Thynne, J.C.J.; MacNeil, K.A.G., Ionisation of Tetrafluoroethylene by Electron Impact, Int. J. Mass Spectrom. Ion Phys., 1970, 5, 3-4, 329, https://doi.org/10.1016/0020-7381(70)80026-2 . [all data]

Page and Goode, 1969
Page, F.M.; Goode, G.C., Negative Ions and the Magnetron., Wiley, NY, 1969. [all data]

Buckley, Johnson, et al., 1995
Buckley, T.J.; Johnson, R.D.; Huie, R.E.; Zhang, Z.; Kuo, S.C.; Klemm, R.B., Ionization energies, appearance energies, and thermochemistry of CF₂O and FCO, J. Phys. Chem., 1995, 99, 4879. [all data]

Goto, Nakamura, et al., 1994
Goto, M.; Nakamura, K.; Toyoda, H.; Sugai, H., Cross section measurements for electron-impact dissociation of CHF₃ into neutral and ionic fragments, Jpn. J. Appl. Phys. Part 1, 1994, 33, 3602. [all data]

Tarnovsky and Becker, 1993
Tarnovsky, V.; Becker, K., Absolute partial cross sections for the parent ionization of the CF_x (x = 1-3) free radicals by electron impact, J. Chem. Phys., 1993, 98, 7868. [all data]

Hildenbrand, 1975
Hildenbrand, D.L., Vertical ionization potential of the CF₂ radical, Chem. Phys. Lett., 1975, 32, 30. [all data]

Dyke, Golob, et al., 1974
Dyke, J.M.; Golob, L.; Jonathan, N.; Morris, A.; Okuda, M., Vacuum ultraviolet photoelectron spectroscopy of transient species. Part 4. Difluoromethylene and ozone, J. Chem. Soc. Faraday Trans. 2, 1974, 70, 1828. [all data]

Reinke, Kraessig, et al., 1973
Reinke, D.; Kraessig, R.; Baumgartel, H., Photoreactions of small organic molecules, Z. Naturforsch. A:, 1973, 28, 1021. [all data]

Hildenbrand, 1973
Hildenbrand, D.L., Mass spectrometric studies of some gaseous sulfur fluorides, J. Phys. Chem., 1973, 77, 897. [all data]

Ehlert, 1969, 2
Ehlert, T.C., Bonding in C₁ and C₂ fluorides, J. Phys. Chem., 1969, 73, 949. [all data]

Zmbov, Uy, et al., 1968
Zmbov, K.F.; Uy, M.; Margrave, J.L., Mass spectrometric study of the high-temperature equilibrium C₂F₄ = 2CF₂ and the heat of formation of the CF₂ radical, J. Am. Chem. Soc., 1968, 90, 5090. [all data]

Pottie, 1965
Pottie, R.F., Ionization potential and heat of formation of the difluoromethylene radical, J. Chem. Phys., 1965, 42, 2607. [all data]

Fisher, Homer, et al., 1965
Fisher, I.P.; Homer, J.B.; Lossing, F.P., Free radicals by mass spectrometry. XXXIII. Ionization potentials of CF₂, CF₃CF₂, CF₃CH₂, n-C₃F₇, and i-C₃F₇ radicals, J. Am. Chem. Soc., 1965, 87, 957. [all data]

Tarnovsky, Kurunczi, et al., 1993
Tarnovsky, V.; Kurunczi, P.; Rogozhnikov, D.; Becker, K., Absolute cross sections for the dissociative electron impact ionization of the CFx (x=1-3) free radicals, Int. J. Mass Spectrom. Ion Processes, 1993, 128, 181. [all data]

Deyerl, Alconcel, et al., 2001
Deyerl, H.J.; Alconcel, L.S.; Continetti, R.E., Photodetachment imaging studies of the electron affinity of CF3, J. Phys. Chem. A, 2001, 105, 3, 552-557, https://doi.org/10.1021/jp003137k . [all data]

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Paulino and Squires, 1991
Paulino, J.A.; Squires, R.R., Carbene Thermochemistry from Collision-Induced Dissociation Threshold Energy Measurements - The Heats of Formation of X1A1 CF2 and X1A1 CCl2, J. Am. Chem. Soc., 1991, 113, 15, 5573, https://doi.org/10.1021/ja00015a009 . [all data]

Mathews, 1967
Mathews, C.W., THE ABSORPTION SPECTRUM OF CF, Can. J. Phys., 1967, 45, 7, 2355, https://doi.org/10.1139/p67-188 . [all data]

Venkateswarlu, 1950
Venkateswarlu, P., On the Emission Bands of CF2, Phys. Rev., 1950, 77, 5, 676, https://doi.org/10.1103/PhysRev.77.676 . [all data]

Laird, Andrews, et al., 1950
Laird, R.K.; Andrews, E.B.; Barrow, R.F., The absorption spectrum of CF2, Trans. Faraday Soc., 1950, 46, 803, https://doi.org/10.1039/tf9504600803 . [all data]

Mann and Thrush, 1960
Mann, D.E.; Thrush, B.A., On the Absorption Spectrum of CF2 and Its Vibrational Analysis, J. Chem. Phys., 1960, 33, 6, 1732, https://doi.org/10.1063/1.1731493 . [all data]

Thrush and Zwolenik, 1963
Thrush, B.A.; Zwolenik, J.J., Predissociation in the absorption spectra of CF and CF2, Trans. Faraday Soc., 1963, 59, 582, https://doi.org/10.1039/tf9635900582 . [all data]

King, Schenck, et al., 1979
King, D.S.; Schenck, P.K.; Stephenson, J.C., Spectroscopy and photophysics of the CF2 system, J. Mol. Spectrosc., 1979, 78, 1, 1, https://doi.org/10.1016/0022-2852(79)90031-6 . [all data]

Cameron, Kable, et al., 1995
Cameron, M.R.; Kable, S.H.; Bacskay, G.B., The electronic spectroscopy of jet-cooled difluorocarbene (CF2): The missing A-state stretching frequencies, J. Chem. Phys., 1995, 103, 11, 4476, https://doi.org/10.1063/1.470728 . [all data]

Wang, Chen, et al., 1998
Wang, C.; Chen, C.; Dai, J.; Ma, X., Laser-induced fluorescence studies of jet-cooled CF2: determination of Ã-state stretching frequencies, Chem. Phys. Lett., 1998, 288, 2-4, 473, https://doi.org/10.1016/S0009-2614(98)00275-9 . [all data]

Bondybey, 1976
Bondybey, V.E., Vibrationally unrelaxed fluorescence in matrix isolated CF2, J. Mol. Spectrosc., 1976, 63, 2, 164, https://doi.org/10.1016/0022-2852(76)90002-3 . [all data]

Bass and Mann, 1962
Bass, A.M.; Mann, D.E., Absorption Spectrum of CF2 Trapped in an Argon Matrix, J. Chem. Phys., 1962, 36, 12, 3501, https://doi.org/10.1063/1.1732492 . [all data]

Milligan, Mann, et al., 1964
Milligan, D.E.; Mann, D.E.; Jacox, M.E.; Mitsch, R.A., Infrared Spectrum of CF2, J. Chem. Phys., 1964, 41, 5, 1199, https://doi.org/10.1063/1.1726051 . [all data]

Smith, Jacox, et al., 1976
Smith, C.E.; Jacox, M.E.; Milligan, D.E., The absorption and fluorescence spectra of matrix-isolated CF2, J. Mol. Spectrosc., 1976, 60, 1-3, 381, https://doi.org/10.1016/0022-2852(76)90141-7 . [all data]

Koda, 1978
Koda, S., Emission and energy transfer of triplet difluoromethylene produced in the reaction of oxygen atoms with tetrafluoroethylene, Chem. Phys. Lett., 1978, 55, 2, 353, https://doi.org/10.1016/0009-2614(78)87037-7 . [all data]

Koda, 1979
Koda, S., Mechanism of oxygen (3P) atom reaction with tetrafluoroethylene and quenching processes of the emission of difluoromethylene (3B1), J. Phys. Chem., 1979, 83, 16, 2065, https://doi.org/10.1021/j100479a004 . [all data]

Toby and Toby, 1980
Toby, S.; Toby, F.S., Singlet and triplet emission from difluoromethylene in the reaction of ozone with tetrafluorethene, J. Phys. Chem., 1980, 84, 2, 206, https://doi.org/10.1021/j100439a016 . [all data]

Koda, 1982
Koda, S., Initial vibrational distribution and relaxation of 3CF2 produced in the reaction of oxygen atoms with tetrafluoroethylene, Chem. Phys., 1982, 66, 3, 383, https://doi.org/10.1016/0301-0104(82)88038-5 . [all data]

Zhou, Zhan, et al., 1985
Zhou, S.; Zhan, M.; Qiu, Y.; Liu, S.; Shi, J.; Li, F.; Yao, J., Chemiluminescence of CF2(3B1) produced by the reaction O(3P) + C2F4, Chem. Phys. Lett., 1985, 121, 4-5, 395, https://doi.org/10.1016/0009-2614(85)87201-8 . [all data]

Schwartz, Davico, et al., 1999, 2
Schwartz, R.L.; Davico, G.E.; Ramond, T.M.; Lineberger, W.C., Singlet-Triplet Splittings in CX, J. Phys. Chem. A, 1999, 103, 41, 8213, https://doi.org/10.1021/jp992214c . [all data]

Davies, Lewis-Bevan, et al., 1981
Davies, P.B.; Lewis-Bevan, W.; Russell, D.K., Infrared diode laser spectrum of the ν1 band of CF2 (X 1A1), J. Chem. Phys., 1981, 75, 12, 5602, https://doi.org/10.1063/1.441998 . [all data]

Orlando, Reid, et al., 1987
Orlando, J.J.; Reid, J.; Smith, D.R., Time-resolved tunable diode laser detection of products of CF2HCl IRMPD: A linestrength measurement for CF2, Chem. Phys. Lett., 1987, 141, 5, 423, https://doi.org/10.1016/0009-2614(87)85053-4 . [all data]

Burkholder, Howard, et al., 1988
Burkholder, J.B.; Howard, C.J.; Hamilton, P.A., Fourier transform spectroscopy of the ν1 and ν3 fundamental bands of CF2, J. Mol. Spectrosc., 1988, 127, 2, 362, https://doi.org/10.1016/0022-2852(88)90126-9 . [all data]

Wormhoudt, McCurdy, et al., 1989
Wormhoudt, J.; McCurdy, K.E.; Burkholder, J.B., Measurements of the strengths of infrared bands of CF2, Chem. Phys. Lett., 1989, 158, 6, 480, https://doi.org/10.1016/0009-2614(89)87374-9 . [all data]

Snelson, 1970
Snelson, A., High Temp. Sci., 1970, 2, 70. [all data]

Forney, Jacox, et al., 1994
Forney, D.; Jacox, M.E.; Irikura, K.K., Matrix isolation study of the interaction of excited neon atoms with CF4. Infrared spectra of CF+3 and CF-3, J. Chem. Phys., 1994, 101, 10, 8290, https://doi.org/10.1063/1.468094 . [all data]

Milligan and Jacox, 1968
Milligan, D.E.; Jacox, M.E., Matrix-Isolation Study of the Reaction of Atomic and Molecular Fluorine with Carbon Atoms. The Infrared Spectra of Normal and 13C-Substituted CF2 and CF3, J. Chem. Phys., 1968, 48, 5, 2265, https://doi.org/10.1063/1.1669423 . [all data]

Qian and Davies, 1995
Qian, H.-B.; Davies, P.B., Infrared Laser Spectroscopy of the ν2 Band of Difluorocarbene (CF2), J. Mol. Spectrosc., 1995, 169, 1, 201, https://doi.org/10.1006/jmsp.1995.1016 . [all data]

Herr and Pimentel, 1965
Herr, K.C.; Pimentel, G.C., A Rapid-Scan Infrared Spectrometer; Flash Photolytic Detection of Chloroformic Acid and of CF_2, Appl. Opt., 1965, 4, 1, 25, https://doi.org/10.1364/AO.4.000025 . [all data]

Lefohn and Pimentel, 1971
Lefohn, A.S.; Pimentel, G.C., Infrared Spectrum of Gaseous CF2 by Rapid Scan Spectroscopy, J. Chem. Phys., 1971, 55, 3, 1213, https://doi.org/10.1063/1.1676207 . [all data]

Davies, Hamilton, et al., 1983
Davies, P.B.; Hamilton, P.A.; Elliott, J.M.; Rice, M.J., Infrared diode laser spectroscopy of the ν3 band of CF2, J. Mol. Spectrosc., 1983, 102, 1, 193, https://doi.org/10.1016/0022-2852(83)90237-0 . [all data]

Suto and Steinfeld, 1990
Suto, O.; Steinfeld, J., Time-resolved diode laser absorption spectroscopy of CF2 produced in UV photodissociation of C2F4 and measurement of ν3 absorption band strength, Chem. Phys. Lett., 1990, 168, 2, 181, https://doi.org/10.1016/0009-2614(90)85126-W . [all data]

Jacox, 1994
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]

Jacox, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [all data]

Jacox, 2003
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement B, J. Phys. Chem. Ref. Data, 2003, 32, 1, 1-441, https://doi.org/10.1063/1.1497629 . [all data]

Powell and Lide, 1966
Powell, F.X.; Lide, D.R., Jr., Microwave Spectrum of CF2, J. Chem. Phys., 1966, 45, 3, 1067, https://doi.org/10.1063/1.1727662 . [all data]

Mathews, 1966
Mathews, C.W., 2500-… Absorption Spectrum of CF2, J. Chem. Phys., 1966, 45, 3, 1068, https://doi.org/10.1063/1.1727663 . [all data]

Basco and Hathorn, 1971
Basco, N.; Hathorn, F.G.M., The electronic absorption spectrum of the trifluoromethyl radical, Chem. Phys. Lett., 1971, 8, 3, 291, https://doi.org/10.1016/0009-2614(71)85015-7 . [all data]

Kirchhoff, Lide, et al., 1973
Kirchhoff, W.H.; Lide, D.R., Jr.; Powell, F.X., The microwave spectrum, force field and dipole moment of CF2, J. Mol. Spectrosc., 1973, 47, 3, 491, https://doi.org/10.1016/0022-2852(73)90096-9 . [all data]

Akins, King, et al., 1979
Akins, D.L.; King, D.S.; Stephenson, J.C., Vibrational relaxation of CF2(ν2 = 1--6 in non-reactive collisions, Chem. Phys. Lett., 1979, 65, 2, 257, https://doi.org/10.1016/0009-2614(79)87060-8 . [all data]

Duignan, Hudgens, et al., 1982
Duignan, M.T.; Hudgens, J.W.; Wyatt, J.R., Multiphoton ionization of the trifluoromethyl radical, J. Phys. Chem., 1982, 86, 21, 4156, https://doi.org/10.1021/j100218a013 . [all data]

Charo and De Lucia, 1982
Charo, A.; De Lucia, F.C., The millimeter and submillimeter spectrum of CF2 and its production in a dc glow discharge, J. Mol. Spectrosc., 1982, 94, 2, 363, https://doi.org/10.1016/0022-2852(82)90012-1 . [all data]

Hack and Langel, 1983
Hack, H.; Langel, W., Photophysics of difluoromethylene (~A 1B1 (0,6,0)) excited by a krypton fluoride laser at 248 nm. 3. Direct measurements of 1B1 collisional removal rates, J. Phys. Chem., 1983, 87, 18, 3462, https://doi.org/10.1021/j100241a022 . [all data]

Hack and Wilms, 1986
Hack, W.; Wilms, A., Photophysics of difluoromethylene (A1B1(0,2,0)). 4. Deactivation processes for single rotational states, J. Phys. Chem., 1986, 90, 17, 4007, https://doi.org/10.1021/j100408a036 . [all data]

Booth and Hancock, 1988
Booth, J.P.; Hancock, G., The radiative lifetime of CF(A 2Σ+), Chem. Phys. Lett., 1988, 150, 5, 457, https://doi.org/10.1016/0009-2614(88)87229-4 . [all data]

Ibuki, Hiraya, et al., 1989
Ibuki, T.; Hiraya, A.; Shobatake, K., Photochemistry of CCl3F and CCl2F2 in the 106--200 nm region, J. Chem. Phys., 1989, 90, 11, 6290, https://doi.org/10.1063/1.456345 . [all data]

Hermann, 1990
Hermann, R., Radiat. Phys. Chem., 1990, 36, 227. [all data]

Creasey, Lambert, et al., 1990
Creasey, J.C.; Lambert, I.R.; Tuckett, R.P.; Hopkirk, A., Vacuum UV spectroscopy and dynamics of CHF, Mol. Phys., 1990, 71, 6, 1355, https://doi.org/10.1080/00268979000102531 . [all data]

Cameron and Kable, 1998
Cameron, M.R.; Kable, S.H., Rotational State Dependent Fluorescence Lifetimes in CF2, J. Mol. Spectrosc., 1998, 192, 2, 449, https://doi.org/10.1006/jmsp.1998.7698 . [all data]

Hansen, Mader, et al., 2000
Hansen, N.; Mader, H.; Temps, F., Nuclear spin--rotation interaction in CF2 () observed by Fourier transform microwave spectroscopy, Chem. Phys. Lett., 2000, 327, 1-2, 97, https://doi.org/10.1016/S0009-2614(00)00840-X . [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, Ion clustering data, Vibrational and/or electronic energy levels, References

• Symbols used in this document:
  

  AE	Appearance energy
  EA	Electron affinity
  IE (evaluated)	Recommended ionization energy
  S°gas,1 bar	Entropy of gas at standard conditions (1 bar)
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
• Customer support for NIST Standard Reference Data products.