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Molybdenum, tetrakis[«mu»-(acetato-O:O')]di-, (Mo-Mo)


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 by: William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Deltasub165.0 ± 8.4kJ/molN/APilcher and Skinner, 1983See also Cavell, Garner, et al., 1979.

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
129. ± 1.491.CSlyusareva, Kondrat'ev, et al., 2008 
171. ± 7.410.ME,TECarson, 1984Based on data from 400. - 420. K.

Gas phase ion energetics data

Go To: Top, Phase change data, Mass spectrum (electron ionization), References, Notes

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:
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

Ionization energy determinations

IE (eV) Method Reference Comment
6.57PEChisholm, Clark, et al., 1987LBLHLM
6.54PELichtenberger and Blevins, 1984LBLHLM
7.0PEChisholm, Clark, et al., 1987Vertical value; LBLHLM
6.92 ± 0.05PEColeman, Green, et al., 1979Vertical value; LLK
6.8PEGreen and Hayes, 1975Vertical value; LLK

Mass spectrum (electron ionization)

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin D.HENNEBERG, MAX-PLANCK INSTITUTE, MULHEIM, WEST GERMANY
NIST MS number 63590

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References

Go To: Top, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes

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

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]

Cavell, Garner, et al., 1979
Cavell, Kingsley J.; Garner, C. David; Pilcher, Geoffrey; Parkes, Stephen, Standard enthalpies of formation of the tetra-«65533»-acetato-derivatives of dimolybdenum(II), chromium(II)?molybdenum(II), dichromium(II), and dichromium(II) dihydrate, and di-«65533»-acetato-bis(pentane-2,4-dionato)dimolybdenum(II), and their metal?metal bond enthalpy contributions, J. Chem. Soc., Dalton Trans., 1979, 11, 1714, https://doi.org/10.1039/dt9790001714 . [all data]

Slyusareva, Kondrat'ev, et al., 2008
Slyusareva, I.V.; Kondrat'ev, Yu.V.; Kozin, A.O.; Belorukova, L.P., Vestn. St. Petersburg. Universit. Ser. 4 Fiz. Khim., 2008, 3, 64. [all data]

Carson, 1984
Carson, A.S., The molar enthalpy of dehydration of Cr2(O2CCH3)4·2H2O(cr) and the molar enthalpies of sublimation of Cr2(O2CCH3)4(cr), Mo2(O2CCH3)4(cr), and Mo2(O2CCF3)4(cr), The Journal of Chemical Thermodynamics, 1984, 16, 5, 427-429, https://doi.org/10.1016/0021-9614(84)90198-8 . [all data]

Chisholm, Clark, et al., 1987
Chisholm, M.H.; Clark, D.L.; Huffman, J.C.; Van Der Sluys, W.G.; Kober, E.M.; Lichtenberger, D.L.; Bursten, B.E., The tungsten-tungsten triple bond. 13. Bisalkyl tetracarboxylates of dimolybdenum and ditungsten. Triple bonds between metal atoms with the valence molecular orbital description 4 2, J. Am. Chem. Soc., 1987, 109, 6796. [all data]

Lichtenberger and Blevins, 1984
Lichtenberger, D.L.; Blevins, C.H., II, Contribution of a «SIGMA»-orbital electron to a quadruple metal-metal bond. A direct experimental measure from vibrational fine structure in the «SIGMA» ionization of mo2(O2CCH3)4, J. Am. Chem. Soc., 1984, 106, 1636. [all data]

Coleman, Green, et al., 1979
Coleman, A.W.; Green, J.C.; Hayes, A.J.; Seddon, E.A.; Lloyd, D.R.; Niwa, Y., A comparison of the electronic structure of some group 6A dimetal tetracarboxylates using photoelectron spectroscopy, J. Chem. Soc. Dalton Trans., 1979, 75, 1057. [all data]

Green and Hayes, 1975
Green, J.C.; Hayes, A.J., Ionization energies of an Mo-Mo quadruple bond; a He(I) photoelectron study of some molybdenum-dycarboxylate dimers, Chem. Phys. Lett., 1975, 31, 306. [all data]


Notes

Go To: Top, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), References