HCO anion
- Formula: CHO-
- Molecular weight: 29.0186
- CAS Registry Number: 57340-31-5
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Reaction thermochemistry data
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 as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
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Individual Reactions
CHO- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1650.7 ± 0.96 | kJ/mol | D-EA | Murray, Miller, et al., 1986 | gas phase; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1617.7 ± 1.7 | kJ/mol | H-TS | Murray, Miller, et al., 1986 | gas phase; B |
| ΔrG° | 1648. ± 19. | kJ/mol | IMRB | Karpas and Klein, 1975 | gas phase; B |
CHO- + = (CHO- •
)
By formula: CHO- + CH4O = (CHO- • CH4O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 120. | kJ/mol | PHPMS | Meot-ner and Sieck, 1986 | gas phase; M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 112. | J/mol*K | PHPMS | Meot-ner and Sieck, 1986 | gas phase; M |
(CHO- • 4294967295) +
= CHO-
By formula: (CHO- • 4294967295CO) + CO = CHO-
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 22.7 ± 1.9 | kJ/mol | N/A | Murray, Miller, et al., 1986 | gas phase; B |
Gas phase ion energetics data
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: John E. Bartmess
Protonation reactions
CHO- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1650.7 ± 0.96 | kJ/mol | D-EA | Murray, Miller, et al., 1986 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1617.7 ± 1.7 | kJ/mol | H-TS | Murray, Miller, et al., 1986 | gas phase |
| ΔrG° | 1648. ± 19. | kJ/mol | IMRB | Karpas and Klein, 1975 | gas phase |
References
Go To: Top, Reaction thermochemistry data, 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.
Murray, Miller, et al., 1986
Murray, K.K.; Miller, T.M.; Leopold, D.G.; Lineberger, W.C.,
Laser photoelectron spectroscopy of the Formylf anion,
J. Chem. Phys., 1986, 84, 2520. [all data]
Karpas and Klein, 1975
Karpas, Z.; Klein, F.S.,
Negative ion-molecule reactions in a mixture of ammonia-formaldehyde - an ICR mass spectrometry study,
Int. J. Mass Spectrom. Ion Phys., 1975, 18, 65. [all data]
Meot-ner and Sieck, 1986
Meot-ner, M.; Sieck, L.W.,
Relative acidities of water and methanol, and the stabilities of the dimer adducts,
J. Phys. Chem., 1986, 90, 6687. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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