PO2 anion
- Formula: O2P-
- Molecular weight: 62.9731
- CAS Registry Number: 20499-58-5
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Reaction thermochemistry 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 compiled by: John E. Bartmess
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Individual Reactions
O2P- + = HO2P
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 328.9 ± 4.3 | kcal/mol | D-EA | N/A | gas phase |
| ΔrH° | 328.9 ± 4.1 | kcal/mol | Endo | Viggiano, Morris, et al., 1991 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 322.3 ± 4.2 | kcal/mol | H-TS | Viggiano, Morris, et al., 1991 | gas phase |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry 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
Protonation reactions
O2P- + = HO2P
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 328.9 ± 4.3 | kcal/mol | D-EA | N/A | gas phase |
| ΔrH° | 328.9 ± 4.1 | kcal/mol | Endo | Viggiano, Morris, et al., 1991 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 322.3 ± 4.2 | kcal/mol | H-TS | Viggiano, Morris, et al., 1991 | gas phase |
Vibrational and/or electronic energy levels
Go To: Top, Reaction thermochemistry data, 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: ?
| Energy (cm-1) |
Med. | Transition | λmin (nm) |
λmax (nm) |
References | ||
|---|---|---|---|---|---|---|---|
| Td = 27600 ± 80 | gas | Xu, de Beer, et al., 1996 | |||||
State: X
| Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
|---|---|---|---|---|---|---|---|
| a1 | 2 | Bend | 520 | T | gas | PE | Xu, de Beer, et al., 1996 |
| b2 | 3 | PO a-stretch | 1198.6 | Ar | IR | Mielke, McCluskey, et al., 1990 Bauschlicher, Zhou, et al., 2000 | |
Additional references: Jacox, 1994, page 103; Jacox, 1998, page 199; Jacox, 2003, page 141
Notes
| T | Tentative assignment or approximate value |
| d | Photodissociation threshold |
References
Go To: Top, Reaction thermochemistry data, 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.
Viggiano, Morris, et al., 1991
Viggiano, A.A.; Morris, R.A.; Dale, F.; Paulson, J.F.; Henshman, M.J.; Miller, T.M.; Miller, S.,
The Gas Phase Acidities of HPO3 and HPO2: Enthalpies of Deprotonation,
J. Phys. Chem., 1991, 95, 3, 1275, https://doi.org/10.1021/j100156a044
. [all data]
Xu, de Beer, et al., 1996
Xu, C.; de Beer, E.; Neumark, D.M.,
Photoelectron spectroscopy of PO-2,
J. Chem. Phys., 1996, 104, 7, 2749, https://doi.org/10.1063/1.470983
. [all data]
Mielke, McCluskey, et al., 1990
Mielke, Z.; McCluskey, M.; Andrews, L.,
Matrix reactions of P2 and O3 molecules,
Chem. Phys. Lett., 1990, 165, 2-3, 146, https://doi.org/10.1016/0009-2614(90)85420-H
. [all data]
Bauschlicher, Zhou, et al., 2000
Bauschlicher, C.W., Jr.; Zhou, M.; Andrews, L.,
A Study of the Products of the Reaction of Phosphorus and Dioxygen,
J. Phys. Chem. A, 2000, 104, 16, 3566, https://doi.org/10.1021/jp993623b
. [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]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics 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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