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Dicobalt octacarbonyl


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 by: José A. Martinho Simões

Quantity Value Units Method Reference Comment
Deltafgas-1183.0 ± 9.1kJ/molReviewMartinho Simões 
Deltafgas-1185.2 ± 9.4kJ/molReviewMartinho Simões 
Deltafgas-1184.1 ± 6.9kJ/molReviewMartinho SimõesSelected data. Average of the values from Connor, Skinner, et al., 1973 and Gardner, Cartner, et al., 1975.

Condensed 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 by: José A. Martinho Simões

Quantity Value Units Method Reference Comment
Deltafsolid-1248.2 ± 8.5kJ/molReviewMartinho Simões 
Deltafsolid-1250.4 ± 8.8kJ/molReviewMartinho Simões 
Deltafsolid-1249.3 ± 6.1kJ/molReviewMartinho SimõesSelected data. Average of the values from Connor, Skinner, et al., 1973 and Gardner, Cartner, et al., 1975.

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

Dicobalt octacarbonyl (solution) + Hydrogen (solution) = 2Cobalt, tetracarbonylhydro- (solution)

By formula: C8Co2O8 (solution) + H2 (solution) = 2C4HCoO4 (solution)

Quantity Value Units Method Reference Comment
Deltar19.7 ± 0.8kJ/molEqSRathke, Klingler, et al., 1992solvent: Supercritical carbon dioxide; Temperature range: 333-453 K. The results corrected for 1 atm pressure of H2 are 16.7 kJ/mol and -17.6 J/(mol K) Rathke, Klingler, et al., 1992
Deltar13.0 ± 0.9kJ/molEqSBor, 1986solvent: n-Hexane; Temperature range: ca. 300-420 K
Deltar26.4kJ/molKinSAlemdaroglu, Penninger, et al., 1976solvent: n-Heptane; The reaction enthalpy relies on the experimental values for the forward and reverse activation enthalpies, 72.4 and 46.0 kJ/mol, respectively Alemdaroglu, Penninger, et al., 1976. A rather different value has, however, been reported for the activation enthalpy of the forward reaction, 104.6 kJ/mol Ungváry, 1972
Deltar27.6kJ/molEqSAlemdaroglu, Penninger, et al., 1976solvent: n-Heptane; Temperature range: 353-428 K
Deltar13.4kJ/molEqSUngváry, 1972solvent: n-Heptane; Temperature range: 307-428 K. The results corrected for 1 atm pressure of H2 are 18.0 kJ/mol and -10.9 J/(mol K) Rathke, Klingler, et al., 1992

Dicobalt octacarbonyl (g) = 2Cobalt, tetracarbonyl (g)

By formula: C8Co2O8 (g) = 2C4CoO4 (g)

Quantity Value Units Method Reference Comment
Deltar64.kJ/molESTConnor, 1977Please also see Pilcher and Skinner, 1982 and Martinho Simões and Beauchamp, 1990. The enthalpy of formation relies on -1184.1 ± 6.9 kJ/mol for the enthalpy of formation of Co2(CO)8(g).
Deltar60. ± 13.kJ/molEG/EIMSBidinosti and McIntyre, 1970The reaction enthalpy includes an estimated correction to 298 K. A value of 60.7 ± 8.4 kJ/mol was reported at an average temperature of 330 K Bidinosti and McIntyre, 1970.

Dicobalt octacarbonyl (solution) = C7Co2O7 (solution) + Carbon monoxide (solution)

By formula: C8Co2O8 (solution) = C7Co2O7 (solution) + CO (solution)

Quantity Value Units Method Reference Comment
Deltar92.7kJ/molKinSUngváry and Markó, 1974solvent: Heptane; Temperature range: 298-328 K
Deltar87.9kJ/molKinSUngváry, 1972solvent: Heptane; Temperature range: 307-337 K

0.5Dicobalt octacarbonyl (solution) + sodium (cr) = C4CoNaO4 (solution)

By formula: 0.5C8Co2O8 (solution) + Na (cr) = C4CoNaO4 (solution)

Quantity Value Units Method Reference Comment
Deltar-318. ± 11.kJ/molRSCKiss, Nolan, et al., 1994solvent: Tetrahydrofuran; The reaction enthalpy was calculated from the enthalpies of the following reactions: 0.5Co2(CO)8(solution) + (Na)(Ph2CO)(solution) = (Na)[Co(CO)4](solution) + Ph2CO(solution), -157. ± 11. kJ/mol, and Ph2CO(solution) + Na(cr) = (Na)(Ph2CO)(solution), -161.1 ± 2.5 kJ/mol Kiss, Nolan, et al., 1994.

Dimanganese decacarbonyl (solution) + Dicobalt octacarbonyl (solution) = 2C9CoMnO9 (solution)

By formula: C10Mn2O10 (solution) + C8Co2O8 (solution) = 2C9CoMnO9 (solution)

Quantity Value Units Method Reference Comment
Deltar3.3 ± 1.3kJ/molEqSKlingler R.J. and Rathke, 1992solvent: Supercritical carbon dioxide; Temperature range: 353-453 K

2Dicobalt octacarbonyl (solution) = C12Co4O12 (solution) + 4Carbon monoxide (solution)

By formula: 2C8Co2O8 (solution) = C12Co4O12 (solution) + 4CO (solution)

Quantity Value Units Method Reference Comment
Deltar123.4 ± 2.1kJ/molEqSBor and Dietler, 1980solvent: Hexane; Temperature range: 378-418 K

C13H10NaO (solution) + 0.5Dicobalt octacarbonyl (solution) = C4CoNaO4 (solution) + Benzophenone (solution)

By formula: C13H10NaO (solution) + 0.5C8Co2O8 (solution) = C4CoNaO4 (solution) + C13H10O (solution)

Quantity Value Units Method Reference Comment
Deltar-157. ± 11.kJ/molRSCKiss, Nolan, et al., 1994solvent: Tetrahydrofuran

Dicobalt octacarbonyl (cr) = 8Carbon monoxide (g) + 2cobalt (cr)

By formula: C8Co2O8 (cr) = 8CO (g) + 2Co (cr)

Quantity Value Units Method Reference Comment
Deltar364.0 ± 8.4kJ/molTD-HFCConnor, Skinner, et al., 1973Please also see Pedley and Rylance, 1977.

References

Go To: Top, Gas phase thermochemistry data, Condensed 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.

Martinho Simões
Martinho Simões, J.A., Private communication (see http://webbook.nist.gov/chemistry/om/). [all data]

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]

Gardner, Cartner, et al., 1975
Gardner, P.J.; Cartner, A.; Cunninghame, R.G.; Robinson, B.H., J. Chem. Soc., Dalton Trans., 1975, 2582.. [all data]

Rathke, Klingler, et al., 1992
Rathke, J.W.; Klingler, R.J.; Krause, T.R., Organometallics, 1992, 11, 585. [all data]

Bor, 1986
Bor, G., Pure & Appl. Chem., 1986, 58, 543. [all data]

Alemdaroglu, Penninger, et al., 1976
Alemdaroglu, N.H.; Penninger, J.M.L.; Oltay, E., Monatsh. Chem., 1976, 107, 1043. [all data]

Ungváry, 1972
Ungváry, F., J. Organometal. Chem., 1972, 36, 363. [all data]

Connor, 1977
Connor, J.A., Top. Curr. Chem., 1977, 71, 71. [all data]

Pilcher and Skinner, 1982
Pilcher, G.; Skinner, H.A., In The Chemistry of the Metal-Carbon Bond Wiley: New York, Hartley, F. R.; Patai, S., ed(s)., 1982. [all data]

Martinho Simões and Beauchamp, 1990
Martinho Simões, J.A.; Beauchamp, J.L., Chem. Rev., 1990, 90, 629. [all data]

Bidinosti and McIntyre, 1970
Bidinosti, D.R.; McIntyre, N.S., Mass spectrometric study of the thermal decomposition of dimanganese decacarbonyl and dicobalt octacarbonyl, Can. J. Chem., 1970, 48, 593. [all data]

Ungváry and Markó, 1974
Ungváry, F.; Markó, L., J. Organometal. Chem., 1974, 71, 283. [all data]

Kiss, Nolan, et al., 1994
Kiss, G.; Nolan, S.P.; Hoff, C.D., Inorg. Chim. Acta, 1994, 227, 285. [all data]

Klingler R.J. and Rathke, 1992
Klingler R.J.; Rathke, J.W., Inorg. Chem., 1992, 31, 804. [all data]

Bor and Dietler, 1980
Bor, G.; Dietler, U.K., J. Organometal. Chem., 1980, 191, 295. [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]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, References