HCO anion
- Formula: CHO-
- Molecular weight: 29.0186
- CAS Registry Number: 57340-31-5
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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 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° | 394.52 ± 0.23 | kcal/mol | D-EA | Murray, Miller, et al., 1986 | gas phase; B |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 386.65 ± 0.40 | kcal/mol | H-TS | Murray, Miller, et al., 1986 | gas phase; B |
| ΔrG° | 394.0 ± 4.5 | kcal/mol | IMRB | Karpas and Klein, 1975 | gas phase; B |
CHO- + = (CHO- •
)
By formula: CHO- + CH4O = (CHO- • CH4O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 28.8 | kcal/mol | PHPMS | Meot-ner and Sieck, 1986 | gas phase; M |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 26.7 | cal/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° | 5.42 ± 0.45 | kcal/mol | N/A | Murray, Miller, et al., 1986 | gas phase; B |
References
Go To: Top, Reaction thermochemistry 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, 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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