Iron dimer

Formula: Fe₂
Molecular weight: 111.690
CAS Registry Number: 12596-01-9
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Other data available:
- Constants of diatomic molecules
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Gas phase ion energetics data

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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

View reactions leading to Fe₂⁺ (ion structure unspecified)

Electron affinity determinations

EA (eV)	Method	Reference	Comment
0.9020 ± 0.0080	LPES	Leopold and Lineberger, 1986	B

Ionization energy determinations

IE (eV)	Method	Reference	Comment
6.30 ± 0.01	PI	Rohlfing, Cox, et al., 1984	LBLHLM
5.9 ± 0.2	EI	Lin and Kant, 1969	RDSH

References

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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]

Rohlfing, Cox, et al., 1984
Rohlfing, E.A.; Cox, D.M.; Kaldor, A.; Johnson, K.H., Photoionization spectra and electronic structure of small iron clusters, J. Chem. Phys., 1984, 81, 3846. [all data]

Lin and Kant, 1969
Lin, S.-S.; Kant, A., Dissociation energy of Fe, J. Phys. Chem., 1969, 73, 2450. [all data]

Notes

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Symbols used in this document:

EA Electron affinity
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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