iridium

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Reaction 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 by: José A. Martinho Simões

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

C12Ir4O12 (cr) = 12Carbon monoxide (g) + 4iridium (cr)

By formula: C12Ir4O12 (cr) = 12CO (g) + 4Ir (cr)

Quantity Value Units Method Reference Comment
Δr118.0 ± 4.0kcal/molTD-HFCConnor, Skinner, et al., 1973Please also see Pedley and Rylance, 1977.

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:
L - Sharon G. Lias

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
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 Ir+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)9.1eVN/AN/AL

Electron affinity determinations

EA (eV) Method Reference Comment
1.56436 ± 0.00013LPDBilodeau, Scheer, et al., 1999B
1.5660 ± 0.0080LPESFeigerle, Corderman, et al., 1981B

Ionization energy determinations

IE (eV) Method Reference Comment
9.1EVALLide, 1992LL
8.87 ± 0.05EIRauh and Ackermann, 1979LLK
8.8 ± 0.7EIHaque, Pelino, et al., 1979LLK
9.1 ± 0.1SMoore, 1970RDSH

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Connor, Skinner, et al., 1973
Connor, J.A.; Skinner, H.A.; Virmani, Y., High temperature microcalorimetric studies of the thermal decomposition and iodination of polynuclear carbonyls of Fe, Co, Ru, Rh, Re, Os and Ir, Faraday Symp. Chem. Soc., 1973, 8, 18, https://doi.org/10.1039/fs9730800018 . [all data]

Pedley and Rylance, 1977
Pedley, J.B.; Rylance, J., Computer Analysed Thermochemical Data: Organic and Organometallic Compounds, University of Sussex, Brigton, 1977. [all data]

Bilodeau, Scheer, et al., 1999
Bilodeau, R.C.; Scheer, M.; Haugen, H.K.; Brooks, R.L., Near-threshold Laser Spectroscopy of Iridium and Platinum Negative Ions: Electron Affinities and the Threshold Law, Phys. Rev. A, 1999, 61, 1, 12505, https://doi.org/10.1103/PhysRevA.61.012505 . [all data]

Feigerle, Corderman, et al., 1981
Feigerle, C.S.; Corderman, R.R.; Bobashev, S.V.; Lineberger, W.C., Binding Energies and Structure of Transition Metal Negative Ions, J. Chem. Phys., 1981, 74, 3, 1580, https://doi.org/10.1063/1.441289 . [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]

Rauh and Ackermann, 1979
Rauh, E.G.; Ackermann, R.J., The first ionization potentials of the transition metals, J. Chem. Phys., 1979, 70, 1004. [all data]

Haque, Pelino, et al., 1979
Haque, R.; Pelino, M.; Gingerich, K.A., Investigation of the thermodynamic stability of the molecule LaIr(g) by high temperature mass spectrometry, J. Chem. Phys., 1979, 71, 2929. [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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