Difluoroboryl radical
- Formula: BF2
- Molecular weight: 48.808
- IUPAC Standard InChIKey: OKZIUSOJQLYFSE-UHFFFAOYSA-N
- CAS Registry Number: 13842-55-2
- Chemical structure:
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Gas phase ion energetics data
Go To: Top, 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:
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
B - John E. Bartmess
View reactions leading to BF2+ (ion structure unspecified)
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
2.13 ± 0.13 | IMRE | Srivastava, Uy, et al., 1974 | EA: 29.2 kcal < EA(F), new EA(F) used. Too stable by ca. 24 kcal/mol, relative to G3(MP2)B3 calcs.; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.4 | DER | Lias, Bartmess, et al., 1988 | LL |
9.0 ± 1.0 | EI | Farber and Srivastava, 1984 | LBLHLM |
9. ± 1. | EI | Uy, Srivastava, et al., 1971 | LLK |
8. ± 1. | EI | Srivastava and Farber, 1971 | LLK |
Vibrational and/or electronic energy levels
Go To: Top, Gas phase ion energetics 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: C
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
Tx = 63100 | T | gas | Atkinson, Irikura, et al., 1997 | ||||
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
Πg | 2 | Bend | 600 ± 50 | gas | MPI | Atkinson, Irikura, et al., 1997 | |
State: B
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
Tx = 59100 | T | gas | B-A,X | 190 | 650 | Hesser and Dressler, 1967 | |
Suto, Ye, et al., 1990 | |||||||
Creasey, Hatherly, et al., 1993 | |||||||
Atkinson, Irikura, et al., 1997 | |||||||
State: A
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
Tx = 35100 | gas | A-X | 220 | 650 | Hesser and Dressler, 1967 | ||
Suto, Ye, et al., 1990 | |||||||
Creasey, Hatherly, et al., 1993 | |||||||
Atkinson, Irikura, et al., 1997 | |||||||
Yang, Ellis, et al., 2011 | |||||||
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
a1 | 2 | Bend | 310 ± 20 | gas | MPI | Atkinson, Irikura, et al., 1997 | |
State: X
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
a1 | 1 | Sym. stretch | 1153 ± 2 | gas | LF | Yang, Ellis, et al., 2011 | |
1 | Sym. stretch | 1151.4 | vs | Ne | IR | Jacox and Thompson, 1995 | |
2 | Bend | 525 ± 2 | gas | EM LF | Creasey, Hatherly, et al., 1993 Yang, Ellis, et al., 2011 | ||
2 | Bend | 523.7 | m | Ne | IR | Jacox and Thompson, 1995 | |
b2 | 3 | Asym. stretch | 1393.5 | vs | Ne | IR | Jacox and Thompson, 1995 |
3 | Asym. stretch | 1389.9 | Ar | IR | Hassanzadeh and Andrews, 1993 | ||
3 | Asym. stretch | 1384.8 | N2 | IR | Hassanzadeh and Andrews, 1993 | ||
Additional references: Jacox, 1994, page 89; Jacox, 1998, page 191
Notes
m | Medium |
vs | Very strong |
T | Tentative assignment or approximate value |
x | Energy separation between the band maximum of the excited electronic state and the v = 0 level of the ground state. |
References
Go To: Top, Gas phase ion energetics 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.
Srivastava, Uy, et al., 1974
Srivastava, R.D.; Uy, O.M.; Farber, M.,
Experimental determination of heats of formation of negative ions and electron affinities of several boron and aluminum fluorides,
J. Chem. Soc. Faraday Trans. 1, 1974, 70, 1033. [all data]
Lias, Bartmess, et al., 1988
Lias, S.G.; Bartmess, J.E.; Liebman, J.F.; Holmes, J.L.; Levin, R.D.; Mallard, W.G.,
Gas-phase ion and neutral thermochemistry,
J. Phys. Chem. Ref. Data, Suppl. 1, 1988, 17, 1-861. [all data]
Farber and Srivastava, 1984
Farber, M.; Srivastava, R.D.,
Electron and thermal dissociation of BF3(g),
J. Chem. Phys., 1984, 81, 241. [all data]
Uy, Srivastava, et al., 1971
Uy, O.M.; Srivastava, R.D.; Farber, M.,
Mass spectrometric determination of the heats of formation of gaseous BO2 BOF2,
High Temp. Sci., 1971, 3, 462. [all data]
Srivastava and Farber, 1971
Srivastava, R.D.; Farber, M.,
Thermodynamic properties of the B-Cl-F system from mass spectrometer investigations,
J. Chem. Soc. Faraday Trans., 1971, 67, 2298. [all data]
Atkinson, Irikura, et al., 1997
Atkinson, D.B.; Irikura, K.K.; Hudgens, J.W.,
Electronic Structure of the BF,
J. Phys. Chem. A, 1997, 101, 11, 2045, https://doi.org/10.1021/jp9623251
. [all data]
Hesser and Dressler, 1967
Hesser, J.E.; Dressler, K.,
Radiative Lifetimes of Ultraviolet Emission Systems Excited in BF3, CF4, and SiF4,
J. Chem. Phys., 1967, 47, 9, 3443, https://doi.org/10.1063/1.1712410
. [all data]
Suto, Ye, et al., 1990
Suto, M.; Ye, C.; Lee, L.C.,
Photoabsorption and fluorescence spectroscopy of BF_{3} in the extreme-vacuum-ultraviolet region,
Phys. Rev. A, 1990, 42, 1, 424, https://doi.org/10.1103/PhysRevA.42.424
. [all data]
Creasey, Hatherly, et al., 1993
Creasey, J.C.; Hatherly, P.A.; Jones, H.M.; Lambert, I.R.; Tuckett, R.P.,
Vacuum UV fluorescence excitation spectroscopy of BF,
Mol. Phys., 1993, 78, 4, 837, https://doi.org/10.1080/00268979300100571
. [all data]
Yang, Ellis, et al., 2011
Yang, J.; Ellis, B.; Clouthier, D.J.,
The complex spectrum of a "simple" free radical: The A-X band system of the jet-cooled boron difluoride free radical,
J. Chem. Phys., 2011, 135, 9, 094305, https://doi.org/10.1063/1.3624528
. [all data]
Jacox and Thompson, 1995
Jacox, M.E.; Thompson, W.E.,
Matrix isolation study of the interaction of excited neon atoms with BF3: Infrared spectra of BF2, BF+2, BF+3, and BF-3,
J. Chem. Phys., 1995, 102, 12, 4747, https://doi.org/10.1063/1.469523
. [all data]
Hassanzadeh and Andrews, 1993
Hassanzadeh, P.; Andrews, L.,
Reaction of halogens with laser-ablated boron: infrared spectra of BXn (X = F, Cl, Br, I; n = 1, 2, 3) in solid argon,
J. Phys. Chem., 1993, 97, 19, 4910, https://doi.org/10.1021/j100121a008
. [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]
Notes
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
EA Electron affinity - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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