Iron anion
- Formula: Fe-
- Molecular weight: 55.846
- CAS Registry Number: 22325-61-7
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Gas phase ion energetics 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
Protonation reactions
Fe- + = HFe
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 1439. ± 18. | kJ/mol | G+TS | Miller, Miller, et al., 1993 | gas phase; Acidity stronger than EtCO2H, comparable to HCO2H. |
| ΔrH° | 1454. ± 7.9 | kJ/mol | D-EA | Leopold and Lineberger, 1986 | gas phase |
| ΔrH° | 1413. ± 13. | kJ/mol | G+TS | Sallans, Lane, et al., 1985 | gas phase |
| ΔrH° | >1445. ± 21. | kJ/mol | D-EA | Compton and Stockdale, 1976 | gas phase; From Fe(CO)5 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 1415. ± 17. | kJ/mol | IMRB | Miller, Miller, et al., 1993 | gas phase; Acidity stronger than EtCO2H, comparable to HCO2H. |
| ΔrG° | 1431. ± 8.4 | kJ/mol | H-TS | Leopold and Lineberger, 1986 | gas phase |
| ΔrG° | 1389. ± 13. | kJ/mol | IMRB | Sallans, Lane, et al., 1985 | gas phase |
References
Go To: Top, 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.
Miller, Miller, et al., 1993
Miller, A.E.S.; Miller, T.M.; Morris, R.A.; Viggiano, A.A.; Vandoren, J.M.; Paulson, J.F.,
Reactions of Fe- with Acids - Gas-Phase Acidity and Bond Energy of FeH,
Int. J. Mass Spectrom. Ion Proc., 1993, 123, 3, 205, https://doi.org/10.1016/0168-1176(93)87099-E
. [all data]
Leopold and Lineberger, 1986
Leopold, D.G.; Lineberger, W.C.,
A study of the low-lying electronic states of Fe2 and Co2 by negative ion photoelectron spectroscopy,
J. Chem. Phys., 1986, 85, 51. [all data]
Sallans, Lane, et al., 1985
Sallans, L.; Lane, K.R.; Squires, R.R.; Freiser, B.S.,
Generation and reactions of atomic metal anions in the gas phase. Determination of the heterolytic and homolytic bond energies of VH, VrH, FeH, CoH, and MoH,
J. Am. Chem. Soc., 1985, 107, 4379. [all data]
Compton and Stockdale, 1976
Compton, R.N.; Stockdale, J.A.D.,
Formation of gas phase negative ions in Fe(CO)5 and Ni(CO)4,
Int. J. Mass Spectrom. Ion Phys., 1976, 22, 47. [all data]
Notes
Go To: Top, 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 - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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