Iron anion
- Formula: Fe-
- Molecular weight: 55.846
- CAS Registry Number: 22325-61-7
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Gas phase 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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 401.75 ± 0.38 | kJ/mol | R-EA | Leopold and Lineberger, 1986 | B |
Quantity | Value | Units | Method | Reference | Comment |
S°gas,1 bar | 180.19 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1984 |
Reaction thermochemistry data
Go To: Top, Gas phase 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
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
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 thermochemistry data, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
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]
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 thermochemistry data, Reaction thermochemistry data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions 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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