HOO anion
- Formula: HO2-
- Molecular weight: 33.0073
- CAS Registry Number: 14691-59-9
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Reaction thermochemistry 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 by: John E. Bartmess
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1575.3 ± 2.1 | kJ/mol | G+TS | Ramond, Blanksby, et al., 2002 | gas phase; versus HCCH |
ΔrH° | 1572. ± 8.8 | kJ/mol | G+TS | Bierbaum, Schmidt, et al., 1981 | gas phase; value altered from reference due to change in acidity scale |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1546.0 ± 1.7 | kJ/mol | IMRE | Ramond, Blanksby, et al., 2002 | gas phase; versus HCCH |
ΔrG° | 1542. ± 8.4 | kJ/mol | IMRE | Bierbaum, Schmidt, et al., 1981 | gas phase; value altered from reference due to change in acidity scale |
Vibrational and/or electronic energy levels
Go To: Top, Reaction thermochemistry 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: ?
Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
---|---|---|---|---|---|---|---|
Td = 8700 ± 50 | gas | Oakes, Harding, et al., 1985 | |||||
Clifford, Wenthold, et al., 1998 | |||||||
Ramond, Blanksby, et al., 2002, 2 | |||||||
State: X
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
a' | 3 | OO stretch | 775 ± 250 | gas | PE | Oakes, Harding, et al., 1985 | |
Additional references: Jacox, 1994, page 51; Jacox, 2003, page 44
Notes
d | Photodissociation threshold |
References
Go To: Top, Reaction thermochemistry 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.
Ramond, Blanksby, et al., 2002
Ramond, T.M.; Blanksby, S.J.; Kato, S.; Bierbaum, V.M.; Davico, G.E.; Schwartz, R.L.; Lineberger, W.C.; Elliso,
Heat of formation of the hydroperoxyl radical HOO via negative ion studies,
J. Phys. Chem. A, 2002, 106, 42, 9641-9647, https://doi.org/10.1021/jp014614h
. [all data]
Bierbaum, Schmidt, et al., 1981
Bierbaum, V.M.; Schmidt, R.J.; DePuy, C.H.; Mead, R.H.; Schulz, P.A.; Lineberger, W.C.,
Reactions of carbanions with triplet and singlet molecular oxygen,
J. Am. Chem. Soc., 1981, 103, 6262. [all data]
Oakes, Harding, et al., 1985
Oakes, J.M.; Harding, L.B.; Ellison, G.B.,
The photoelectron spectroscopy of HO2-,
J. Chem. Phys., 1985, 83, 5400. [all data]
Clifford, Wenthold, et al., 1998
Clifford, E.P.; Wenthold, P.G.; Gareyev, R.; Lineberger, W.C.; DePuy, C.H.; Bierbaum, V.M.; Ellison, G.B.,
Photoelectron spectroscopy, gas phase acidity, and thermochemistry of tert-butyl hydroperoxide: Mechanisms for the rearrangement of peroxyl radicals,
J. Chem. Phys., 1998, 109, 23, 10293, https://doi.org/10.1063/1.477725
. [all data]
Ramond, Blanksby, et al., 2002, 2
Ramond, R.M.; Blanksby, S.J.; Kato, S.; Bierbaum, V.M.; Davico, G.E.; Schwartz, R.L.; Lineberger, W.C.; Ellison, G.B.,
Heat of Formation of the Hydroperoxyl Radical HOO Via Negative Ion Studies,
J. Phys. Chem. A, 2002, 106, 42, 9641, https://doi.org/10.1021/jp014614h
. [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, 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]
Notes
Go To: Top, Reaction thermochemistry data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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