Cr(Cp)(CO)3(H)


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

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Individual Reactions

Chromium, hexacarbonylbis(η5-2,4-cyclopentadien-1-yl)di-, (Cr-Cr) (cr) + Hydrogen (g) = 2C8H6CrO3 (cr)

By formula: C16H10Cr2O6 (cr) + H2 (g) = 2C8H6CrO3 (cr)

Quantity Value Units Method Reference Comment
Δr-3.32 ± 0.96kcal/molRSCLandrum and Hoff, 1985The reaction enthalpy was obtained from the value for the reaction 2Cr(Cp)(CO)3(H)(cr) + 1,3-cy-C6H8(solution) = [Cr(Cp)(CO)3]2(cr) + cy-C6H10(solution), -23.5 ± 0.91 kcal/mol Landrum and Hoff, 1985, together with the calculated enthalpy for 1,3-cy-C6H8(l) + H2(g) = cy-C6H10(l), -112.2±1.3 Pedley, 1994. It was assumed that 1,3-cy-C6H8 and cy-C6H10 have similar solution enthalpies in heptane
Δr-3.6 ± 1.0kcal/molDSCLandrum and Hoff, 1985The reaction enthalpy was obtained from the value for the reaction 2Cr(Cp)(CO)3(H)(cr) + 1,3-cy-C6H8(solution) = [Cr(Cp)(CO)3]2(cr) + cy-C6H10(solution), -23.5 ± 0.91 kcal/mol Landrum and Hoff, 1985, together with the calculated enthalpy for 1,3-cy-C6H8(l) + H2(g) = cy-C6H10(l), -112.2±1.3 Pedley, 1994. It was assumed that 1,3-cy-C6H8 and cy-C6H10 have similar solution enthalpies in heptane

C8H6CrO3 (solution) + C13H20CrNaO2P (solution) = C13H21CrO2P (solution) + C8H5CrNaO3 (solution)

By formula: C8H6CrO3 (solution) + C13H20CrNaO2P (solution) = C13H21CrO2P (solution) + C8H5CrNaO3 (solution)

Quantity Value Units Method Reference Comment
Δr-19.7 ± 0.41kcal/molRSCKiss, Nolan, et al., 1994solvent: Tetrahydrofuran

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.

Landrum and Hoff, 1985
Landrum, J.T.; Hoff, C.D., J. Organometal. Chem., 1985, 282, 215. [all data]

Pedley, 1994
Pedley, J.B., Thermodynamic Data and Structures of Organic Compounds; Thermodynamics Research Center Data Series, Vol I, Thermodynamics Research Center, College Station, 1994. [all data]

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


Notes

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