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Difluoroamino radical

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Gas phase ion energetics data

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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:
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
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 F2N+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)11.63 ± 0.01eVN/AN/AL

Electron affinity determinations

EA (eV) Method Reference Comment
0.87 ± 0.15D-EAKoppel, Taft, et al., 1994Exptl, not interpolated dHf(F2NH) from Gurvich, Veyts, et al., is used. It agrees far better with MO calns; B
1.35 ± 0.15D-EAKoppel, Pikver, et al., 1981This acidity disagrees with the authors' later( Koppel, Taft, et al., 1994) value by 10 kcal/mol, but agrees with G3(MP2) computations much better.The acidity of HNF2 is not well known therefore.; B
1.10 ± 0.10EIAERuckhaberle, Lehmann, et al., 1997B
1.68 ± 0.21EIAEHarland and Franklin, 1974From NF3; B
>0.70 ± 0.20EIAEDudin, Baluev, et al., 1979From NF3; B
>0.41 ± 0.15EIAEDudin, Balaev, et al., 1978From N2F4; B
2.99997SIPage and Goode, 1969The Magnetron method, lacking mass analysis, is not considered reliable.; B

Ionization energy determinations

IE (eV) Method Reference Comment
11.8 ± 0.4EITarnovsky, Levin, et al., 1994LL
11.63 ± 0.01PIBerkowitz, Greene, et al., 1984LBLHLM
11.8 ± 0.1EIFoner and Hudson, 1973LLK
12.1PEHerring, 1972LLK
11.62 ± 0.02PECornford, Frost, et al., 1971LLK
11.79 ± 0.12EICristy and Mamantov, 1970RDSH
12.1 ± 0.1PECornford, Frost, et al., 1972Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
FN+15.7 ± 0.4FEITarnovsky, Levin, et al., 1994LL
FN+15.09 ± 0.01FPIBerkowitz, Greene, et al., 1984LBLHLM
FN+11.9 ± 0.2F(-)EIFoner and Hudson, 1973LLK
FN+15.5 ± 0.2FEIFoner and Hudson, 1973LLK
NF+11.8 ± 0.2F-EIHerron and Dibeler, 1961RDSH
NF+15.5 ± 0.2FEIHerron and Dibeler, 1961RDSH
NF+15.0 ± 0.2FEILoughran and Mader, 1960RDSH

References

Go To: Top, Gas phase ion energetics data, Notes

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

Koppel, Taft, et al., 1994
Koppel, I.A.; Taft, R.W.; Anvia, F.; Zhu, S.Z.; Hu, L.Q.; Sung, K.S.; Desmarteau, D.D.; Yagupolskii, L.M., The Gas-Phase Acidities of Very Strong Neutral Bronsted Acids, J. Am. Chem. Soc., 1994, 116, 7, 3047, https://doi.org/10.1021/ja00086a038 . [all data]

Gurvich, Veyts, et al.
Gurvich, L.V.; Veyts, I.V.; Alcock, C.B., Hemisphere Publishing, NY, 1989, V. 1 2, Thermodynamic Properties of Individual Substances, 4th Ed. [all data]

Koppel, Pikver, et al., 1981
Koppel, I.; Pikver, R.; Sugis, A.; Suurmaa, E.; Lippmaa, E., FTICR Study of Structure and Solvent Effects on Basicity of Some Anions in the Gas Phase, Org. Reac., 1981, 18, 3. [all data]

Ruckhaberle, Lehmann, et al., 1997
Ruckhaberle, N.; Lehmann, L.; Matejcik, S.; Illenberger, E.; Bouteiller, Y.; Periquet, V.; Museur, L.; Desfran, Free Electron Attachment and Rydberg Electron Transfer to NF3 Molecules and Clusters, J. Phys. Chem. A, 1997, 101, 51, 9942, https://doi.org/10.1021/jp972422+ . [all data]

Harland and Franklin, 1974
Harland, P.W.; Franklin, J.L., Partitioning of excess energy in dissociative resonance capture processes, J. Chem. Phys., 1974, 61, 1621. [all data]

Dudin, Baluev, et al., 1979
Dudin, A.V.; Baluev, A.V.; Gorokhov, L.N., A Mass Spectrometric Investigation of Nitrogen Trifluoride by the Electron Shock Method, Izv. Akad. Nauk SSR Ser. Khim. 2172, 1979. [all data]

Dudin, Balaev, et al., 1978
Dudin, A.V.; Balaev, A.V.; Gorokhov, L.N., Mass Spectrometric Study of Tetrafluorohydrazine and the Products Resulting from Its Breakdown Under Electron Impact, Izv. Akad. Nauk SSR Ser. Khim. 1306, 1978. [all data]

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

Tarnovsky, Levin, et al., 1994
Tarnovsky, V.; Levin, A.; Becker, K., Absolute cross sections for the electron impact ionization of the NF2 and NF free radicals, J. Chem. Phys., 1994, 100, 5626. [all data]

Berkowitz, Greene, et al., 1984
Berkowitz, J.; Greene, J.P.; Foropoulos, J., Jr.; Neskovic, O.M., Bonding and ionization energies of N-F and P-F compounds, J. Chem. Phys., 1984, 81, 6166. [all data]

Foner and Hudson, 1973
Foner, S.N.; Hudson, R.L., Mass spectrometric studies of tetrafluorohydrazine and the difluoroamino radical, J. Chem. Phys., 1973, 58, 581. [all data]

Herring, 1972
Herring, F.G., General discussion, Faraday Discuss. Chem. Soc., 1972, 54, 68. [all data]

Cornford, Frost, et al., 1971
Cornford, A.B.; Frost, D.C.; Herring, F.G.; McDowell, C.A., Ionization potentials of the difluoroamino radical by photoelectron spectroscopy and INDO calculations, J. Chem. Phys., 1971, 54, 1872. [all data]

Cristy and Mamantov, 1970
Cristy, S.S.; Mamantov, G., Cryogenic mass spectrometry of reactive fluorine-containing species. II. Applications to synthesis via pyrolysis, photolysis and microwave discharge, Intern. J. Mass Spectrom. Ion Phys., 1970, 5, 319. [all data]

Cornford, Frost, et al., 1972
Cornford, A.B.; Frost, D.C.; Herring, F.G.; McDowell, C.A., Photoelectron spectra of some free radicals, Faraday Discuss. Chem. Soc., 1972, 54, 56. [all data]

Herron and Dibeler, 1961
Herron, J.T.; Dibeler, V.H., Mass spectrometric study of NF2, NF3, N2F2, and N2F4, J. Res. NBS, 1961, 65A, 405. [all data]

Loughran and Mader, 1960
Loughran, E.D.; Mader, C., Appearance potential study of tetrafluorohydrazine, J. Chem. Phys., 1960, 32, 1578. [all data]


Notes

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