Menu
Home Explore People Places Arts History Plants & Animals Science Life & Culture Technology
On this page
Cyclopentadienylmolybdenum tricarbonyl dimer
Chemical compound

Cyclopentadienylmolybdenum tricarbonyl dimer is the chemical compound with the formula Cp2Mo2(CO)6, where Cp is C5H5. A dark red solid, it has been the subject of much research although it has no known practical uses.

Related Image Collections Add Image
Profiles
1 Image
We don't have any YouTube videos related to Cyclopentadienylmolybdenum tricarbonyl dimer yet.
We don't have any PDF documents related to Cyclopentadienylmolybdenum tricarbonyl dimer yet.
We don't have any Books related to Cyclopentadienylmolybdenum tricarbonyl dimer yet.
We don't have any archived web articles related to Cyclopentadienylmolybdenum tricarbonyl dimer yet.

Structure and synthesis

The molecule exists in two rotamers, gauche and anti.1 The six CO ligands are terminal and the Mo-Mo bond distance is 3.2325 Å.2 The compound is prepared by treatment of molybdenum hexacarbonyl with sodium cyclopentadienide followed by oxidation of the resulting NaMo(CO)3(C5H5).3 Other methods have been developed starting with Mo(CO)3(CH3CN)3 instead of Mo(CO)6.4

Reactions

Thermolysis of this compound in hot solution of diglyme (bis(2-methoxyethyl)ether) results in decarbonylation, giving the tetracarbonyl,5 which has a formal triple bond between the Mo centers (dMoMo = 2.448 Å):6

(C5H5)2Mo2(CO)6 → (C5H5)2Mo2(CO)4 + 2 CO

The resulting cyclopentadienylmolybdenum dicarbonyl dimer in turn binds a variety of substrates across the metal-metal triple bond.

References

  1. Brian Mann (1997-01-06). "Fluxionality of Cp2Mo2(CO)6". University of Sheffield. http://brian-mann.staff.shef.ac.uk/Cp2Mo2CO6.html ↩

  2. R. D. Adams, D. M. Collins, and F. A. Cotton (1974). "Molecular Structures and Barriers to Internal Rotation in Bis(η5-cyclopentadienyl)hexacarbonylditungsten and Its Molybdenum Analog". Inorg. Chem. 13 (5): 1086–1090. doi:10.1021/ic50135a015.{{cite journal}}: CS1 maint: multiple names: authors list (link) /wiki/F._A._Cotton ↩

  3. Manning, A. R.; Hacket, Paul; Birdwhistell, Ralph (1990). "Hexacarbonylbis(η5-Cyclopentadienyl)Dichromium, Molybdenum, and Tungsten and their Analogs, M2(η5-C5H4R)2(CO)6 (M = Cr, Mo, and W; R = H, Me or PhCH2)". Inorganic Syntheses. 28: 148–149. doi:10.1002/9780470132593.ch39. ISBN 9780470132593. 9780470132593 ↩

  4. Curtis, M. David; Hay, Michael S. (1990). "Cyclopentadienyl Metal Carbonyl Dimers of Molybdenum and Tungsten". Inorganic Syntheses. Inorganic Syntheses. Vol. 28. pp. 150–152. doi:10.1002/9780470132593.ch40. ISBN 9780470132593. 9780470132593 ↩

  5. Curtis, M. David; Hay, Michael S. (1990). "Cyclopentadienyl Metal Carbonyl Dimers of Molybdenum and Tungsten". Inorganic Syntheses. Inorganic Syntheses. Vol. 28. pp. 150–152. doi:10.1002/9780470132593.ch40. ISBN 9780470132593. 9780470132593 ↩

  6. Cotton, F. A.; Walton, R. A. "Multiple Bonds Between Metal Atoms" Oxford (Oxford): 1993, p 564ff. ISBN 0-19-855649-7. /wiki/ISBN_(identifier) ↩