Boron dioxide

Formula: BO₂
Molecular weight: 42.810
CAS Registry Number: 13840-88-5
Information on this page:
Other data available:
- Gas phase thermochemistry data
Data at other public NIST sites:
- Gas Phase Kinetics Database
Options:
- Switch to calorie-based units

Gas phase ion energetics data

Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
B - John E. Bartmess

View reactions leading to BO₂⁺ (ion structure unspecified)

Electron affinity determinations

EA (eV)	Method	Reference	Comment
4.460 ± 0.030	LPES	Zhai, Wang, et al., 2007	B
4.32 ± 0.19	R-A	Semenikin, Minaeva, et al., 1987	Also BO2 neutral = -69.8±2.0 kcal/mol from TDEq.; value altered from reference due to conversion from electron convention to ion convention; B
4.51 ± 0.21	R-A	Sidorov, Rudnyi, et al., 1983	value altered from reference due to conversion from electron convention to ion convention; B
4.19 ± 0.31	TDEq	Jensen, 1970	B
3.40 ± 0.50	EIAE	Shevchenko, Iljin, et al., 1976	From K₂BO₂F; B
3.28 ± 0.13	TDEq	Srivastava, Uy, et al., 1971	EA(BO₂) < EA(Cl) by 7.7 kcal, new ΔH_f(BO₂) and EA(Cl) used; B

Ionization energy determinations

IE (eV)	Method	Reference	Comment
12.7 ± 0.4	DER	Bagarat'yan and Nikitin, 1979	LLK
14. ± 1.	EI	Bagarat'yan and Nikitin, 1979	LLK
14.0 ± 1.0	EI	Uy, Srivastava, et al., 1971	LLK

References

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

Zhai, Wang, et al., 2007
Zhai, H.J.; Wang, L.M.; Li, S.D.; Wang, L.S., Vibrationally resolved photoelectron spectroscopy of BO- and BO2-: A joint experimental and theoretical study, J. Phys. Chem. A, 2007, 111, 6, 1030-1035, https://doi.org/10.1021/jp0666939 . [all data]

Semenikin, Minaeva, et al., 1987
Semenikin, V.I.; Minaeva, I.I.; Sorokin, I.D.; Nikitin, M.I.; Rudnyi, E.B.; Sidorov, L.N., Mass Spectrometric Determination of the Enthalpy of Formation and Electron Affinity of BO₂, High Temp. Phys. (Engl.), 1987, 25, 497. [all data]

Sidorov, Rudnyi, et al., 1983
Sidorov, L.N.; Rudnyi, E.B.; Nikitin, M.I.; Sorokin, I.D., Gas Phase Anion Exchange Reactions and the Determination of the Heats of Formation of Metaphosphate (PO₃^-), metaborate (BO₂^-), and perrhennate (ReO₄^-), Dokl. Akad. Nauk SSSR Ser. Khim., 1983, 272, 1172. [all data]

Jensen, 1970
Jensen, D.E., Electron Attachment and Compound Formation in Flames. II. Mass Spectrometry of Boron-Containing Flames, J. Chem. Phys., 1970, 52, 6, 3305, https://doi.org/10.1063/1.1673481 . [all data]

Shevchenko, Iljin, et al., 1976
Shevchenko, V.E.; Iljin, M.K.; Nikitin, O.T.; Sidorov, L.N., Mass-spectrometric study of mixed dimers M₂BO₂F, Int. J. Mass Spectrom. Ion Phys., 1976, 21, 279. [all data]

Srivastava, Uy, et al., 1971
Srivastava, R.D.; Uy, O.M.; Farber, M., Effusion mass spectrometric study of thermodynamic properties of BO- and BO₂-, J. Chem. Soc. Faraday Trans., 1971, 67, 2941. [all data]

Bagarat'yan and Nikitin, 1979
Bagarat'yan, N.V.; Nikitin, O.T., Electron ionization of vapor over boron oxide, Vestn. Mosk. Univ. Khim., 1979, 34, 539. [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]

Notes

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

Symbols used in this document:

EA Electron affinity
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.