iron oxide
- Formula: FeO
- Molecular weight: 71.844
- IUPAC Standard InChIKey: UQSXHKLRYXJYBZ-UHFFFAOYSA-N
- CAS Registry Number: 1345-25-1
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Iron monoxide
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Gas phase 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.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 60.000 | kcal/mol | Review | Chase, 1998 | Data last reviewed in June, 1965 |
Quantity | Value | Units | Method | Reference | Comment |
S°gas,1 bar | 57.820 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1965 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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Temperature (K) | 5000. to 6000. |
---|---|
A | 8.650710 |
B | -0.024152 |
C | 0.154889 |
D | -0.016799 |
E | 0.056932 |
F | 57.23490 |
G | 67.76360 |
H | 60.00010 |
Reference | Chase, 1998 |
Comment | Data last reviewed in June, 1965 |
Gas phase ion energetics 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
B - John E. Bartmess
View reactions leading to FeO+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 217. | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 210.4 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
1.49450 ± 0.00022 | ZEKE | Drechsler, Boesl, et al., 1997 | B |
1.492 ± 0.020 | LPES | Engelking and Lineberger, 1977 | B |
1.500 ± 0.040 | LPES | Wu, Desai, et al., 1996 | B |
1.49303 | LPES | Anderson, Lykke, et al., 1987 | B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.9 ± 0.16 | END | Armentrout, Halle, et al., 1982 | LBLHLM |
8.71 ± 0.10 | EI | Hildenbrand, 1975 | LLK |
8. ± 1. | EI | Balducci, DeMaria, et al., 1971 | LLK |
References
Go To: Top, Gas phase 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.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Drechsler, Boesl, et al., 1997
Drechsler, G.; Boesl, U.; Bassmann, C.; Schlag, E.W.,
Mass selected anion-zero kinetic energy photoelectron spectroscopy (anion-ZEKE): Ground and low excited states of FeO,
J. Chem. Phys., 1997, 107, 7, 2284-2291, https://doi.org/10.1063/1.474622
. [all data]
Engelking and Lineberger, 1977
Engelking, P.C.; Lineberger, W.C.,
Laser photoelecton spectrometry of FeO-: Electron affinity, electronic state separations, and ground state vibrations of iron oxide, and a new ground state assignment,
J. Chem. Phys., 1977, 66, 5054. [all data]
Wu, Desai, et al., 1996
Wu, H.; Desai, R.; Wang, L.-S.,
Observation and Photoelectron Spectroscopic Study of Novel Mono- and Di-iron Oxide Molecules: FeOy- (y=1-4) and Fe2Oy- (y=1-5),
J. Am. Chem. Soc., 1996, 118, 22, 5296, https://doi.org/10.1021/ja954153b
. [all data]
Anderson, Lykke, et al., 1987
Anderson, T.; Lykke, K.R.; Neumark, D.M.; Lineberger, W.C.,
Autodetachment Study of the Electronic Spectroscopy of FeO-,
J. Chem. Phys., 1987, 86, 4, 1858, https://doi.org/10.1063/1.452137
. [all data]
Armentrout, Halle, et al., 1982
Armentrout, P.B.; Halle, L.F.; Beauchamp, J.L.,
Reaction of Cr+, Mn+, Fe+, Co+, and Ni+ with O2 and N2O. Examination of the translational energy dependence of the cross sections of endothermic reactions,
J. Chem. Phys., 1982, 76, 2449. [all data]
Hildenbrand, 1975
Hildenbrand, D.L.,
Thermochemistry of molecular FeO, FeO+ and FeO2,
Chem. Phys. Lett., 1975, 34, 352. [all data]
Balducci, DeMaria, et al., 1971
Balducci, G.; DeMaria, G.; Guido, M.; Piacente, V.,
Dissociation energy of FeO,
J. Chem. Phys., 1971, 55, 2596. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
EA Electron affinity S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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