iron

• Formula: Fe
• Molecular weight: 55.845
• IUPAC Standard InChI: InChI=1S/Fe Copy

  
• IUPAC Standard InChIKey: XEEYBQQBJWHFJM-UHFFFAOYSA-N Copy
• CAS Registry Number: 7439-89-6
• Chemical structure:
  This structure is also available as a 2d Mol file
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• Information on this page:
  • Gas phase ion energetics data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Reaction thermochemistry data
  • Ion clustering data
• Data at other public NIST sites:
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  • NIST Atomic Spectra Database - Levels Holdings (on physics web site)
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  • X-ray Photoelectron Spectroscopy Database, version 5.0
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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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

View reactions leading to Fe⁺ (ion structure unspecified)

Electron affinity determinations

Ionization energy determinations

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.

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]

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]

Engelking and Lineberger, 1979
Engelking, P.C.; Lineberger, W.C., Laser Photoelectron Spectroscopy of Fe^-: the Electron Affinity of Iron and the Nonstatistical Fine Structure Detachment Intensities at 488 nm, Phys. Rev. A, 1979, 19, 1, 149, https://doi.org/10.1103/PhysRevA.19.149 . [all data]

Engelking and Lineberger, 1976
Engelking, P.C.; Lineberger, W.C., Electron Affinity of Atomic Iron and Some Iron Compounds Mearsured by Photoelectron Spectroscopy, Bull. Am. Phys. Soc., 1976, 21, 1263. [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]

Russell, Solouki, et al., 1995
Russell, D.H.; Solouki, T.; Oriedo, J.V.B., Collisional relaxation of metastable electronic states of Fe⁺, J. Am. Soc. Mass Spectrom., 1995, 6, 543. [all data]

Lide, 1992
Lide, D.R. (Editor), Ionization potentials of atoms and atomic ions in Handbook of Chem. and Phys., 1992, 10-211. [all data]

Kelly, 1987
Kelly, R.L., Atomic and ionic spectrum lines of hydrogen through kryton, J. Phys. Chem. Ref. Data, 1987, 16. [all data]

Sugar and Corliss, 1985
Sugar, J.; Corliss, C., Atomic energy levels of the iron period elements: Potassium through nickel, J. Phys. Chem. Ref. Data, 1985, 14. [all data]

Dyke, Gravenor, et al., 1982
Dyke, J.M.; Gravenor, B.W.J.; Lewis, R.A.; Morris, A., Gas-phase high temperature photoelectron spectroscopy: An investigation of the transition metals iron, cobalt, and nickel, J. Phys. B:, 1982, 15, 4523. [all data]

Clements and Sale, 1976
Clements, P.J.; Sale, F.R., A mass spectrometric study of nickel tetracarbonyl, iron pentacarbonyl and binary mixtures of these compounds, Metall. Trans. B:, 1976, 7, 171. [all data]

Hildenbrand, 1975
Hildenbrand, D.L., Thermochemistry of molecular FeO, FeO⁺ and FeO₂, Chem. Phys. Lett., 1975, 34, 352. [all data]

Moore, 1970
Moore, C.E., Ionization potentials and ionization limits derived from the analyses of optical spectra, Natl. Stand. Ref. Data Ser., (U.S. Natl. Bur. Stand.), 1970, 34, 1. [all data]

Notes

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• Symbols used in this document:
  

  EA	Electron affinity
  IE (evaluated)	Recommended ionization energy

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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