Magnesium, bis(η5-2,4-cyclopentadien-1-yl)-

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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
Δfgas32.9 ± 1.1kcal/molReviewMartinho SimõesSelected data
Δfgas34.70 ± 0.79kcal/molReviewMartinho Simões 

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
Δfsolid16.6 ± 1.0kcal/molReviewMartinho SimõesSelected data
Δfsolid18. ± 0.7kcal/molCC-SBChipperfield, Sneyd, et al., 1979Value corrected based on a set of ancillary data by J.A. Martinho Simões; The enthalpy of combustion is not reported in Chipperfield, Sneyd, et al., 1979

Phase change 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 as indicated in comments:
AC - William E. Acree, Jr., James S. Chickos
MS - José A. Martinho Simões

Quantity Value Units Method Reference Comment
Δsub16.3 ± 0.31kcal/molN/APilcher and Skinner, 1983See also Hull, Reid, et al., 1967 and Turnbull, 1967.; AC
Δsub16.3 ± 0.31kcal/molRSCHull, Reid, et al., 1967, 2MS

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 compiled by: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi

Ionization energy determinations

IE (eV) Method Reference Comment
8.0 ± 0.1EIBegun and Compton, 1973 
8.11PEEvans, Green, et al., 1972Vertical value

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C5H5Mg+11.0 ± 0.2?EIBegun and Compton, 1973 
Mg+13.9 ± 0.5?EIBegun and Compton, 1973 

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.

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

Chipperfield, Sneyd, et al., 1979
Chipperfield, J.R.; Sneyd, J.C.R.; Webster, D.E., J. Organometal. Chem., 1979, 178, 177. [all data]

Pilcher and Skinner, 1983
Pilcher, G.; Skinner, H.A., Thermochemistry of organometallic compounds, 1983, 43-90, https://doi.org/10.1002/9780470771686.ch2 . [all data]

Hull, Reid, et al., 1967
Hull, H.S.; Reid, Allen Forrest; Turnbull, Alan G., Heat of formation and bond energy of bis(cyclopentadienyl)magnesium, Inorg. Chem., 1967, 6, 4, 805-807, https://doi.org/10.1021/ic50050a032 . [all data]

Turnbull, 1967
Turnbull, AG, Thermochemistry of biscyclopentsdienyl metal compounds, Aust. J. Chem., 1967, 20, 12, 2757-621, https://doi.org/10.1071/CH9672757 . [all data]

Hull, Reid, et al., 1967, 2
Hull, H.S.; Reid, A.F.; Turnbull, A.G., Inorg. Chem., 1967, 6, 805. [all data]

Begun and Compton, 1973
Begun, G.M.; Compton, R.N., Electron impact ionization studies of ferrocene, cobaltocene, nickelocene, and magnesocene, J. Chem. Phys., 1973, 58, 2271. [all data]

Evans, Green, et al., 1972
Evans, S.; Green, M.L.H.; Jewitt, B.; Orchard, A.F.; Pygall, C.F., Electronic structure of metal complexes containing π-cyclopentadienyl and related ligands, J. Chem. Soc. Faraday Trans. 2, 1972, 68, 1847. [all data]


Notes

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