Molybdenum, tetrakis[μ-(acetato-O:O')]di-, (Mo-Mo)

• Formula: C₈H₁₂Mo₂O₈
• Molecular weight: 428.10
• IUPAC Standard InChI: InChI=1S/4C2H4O2.2Mo/c4*1-2(3)4;;/h4*1H3,(H,3,4);;/q;;;;2*+2/p-4 Copy

  
• IUPAC Standard InChIKey: DOOLFANBWPPEGQ-UHFFFAOYSA-J Copy
• CAS Registry Number: 14221-06-8
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Other names: Molybdenum, tetrakis(μ-acetato)di-, (Mo-Mo); Dimolybdenum tetraacetate; Tetraacetatodimolybdenum; Mo2(O2CCH3)4; Molybdenum, tetrakis[μ-(acetato-O:O')]di-,; tetrakis[μ-(acetato-O:O')]dimolybdenum
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Phase change data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Options:
  • Switch to calorie-based units

Phase change data

Go To: Top, Gas phase ion energetics 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 by: William E. Acree, Jr., James S. Chickos

Enthalpy of sublimation

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

Mass spectrum (electron ionization)

Go To: Top, Phase change data, Gas phase ion energetics data, References, Notes

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

Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.

For Zoom

1.) Enter the desired X axis range (e.g., 100, 200)

2.) Check here for automatic Y scaling

3.) Press here to zoom

Additional Data

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 Σ-orbital electron to a quadruple metal-metal bond. A direct experimental measure from vibrational fine structure in the Σ 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

• Symbols used in this document:
  

  ΔsubH	Enthalpy of sublimation
  ΔsubH°	Enthalpy of sublimation at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
• Customer support for NIST Standard Reference Data products.