Cyclopentadienylvanadium tetracarbonyl
Identifiers
3D model (JSmol)
EC Number
  • 235-163-9
  • InChI=1S/C5H5.4CO.V/c1-2-4-5-3-1;4*1-2;/h1-5H;;;;;
    Key: LIFGJKDEFQAOFY-UHFFFAOYSA-N
  • [C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+].C1=C[CH]C=C1.[V]
Properties
Appearance orange solid
Density 1.56 g/cm3
Boiling point sublimes
Hazards
GHS labelling:
GHS06: ToxicGHS07: Exclamation mark
Danger
H301, H311, H315, H319, H330, H335
P260, P261, P264, P270, P271, P280, P284, P301+P310, P302+P352, P304+P340, P305+P351+P338, P310, P312, P320, P321, P322, P330, P332+P313, P337+P313, P361, P362, P363, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Cyclopentadienylvanadium tetracarbonyl is the organovanadium compound with the formula (C5H5)V(CO)4. An orange, diamagnetic solid, it is the principal cyclopentadienyl carbonyl of vanadium. It can be prepared by heating a solution of vanadocene under high pressure of carbon monoxide. As confirmed by X-ray crystallography, the coordination sphere of vanadium consists of η5-cyclopentadienyl and four carbonyl ligands. The molecule is a four-legged piano stool complex.[1] The compound is soluble in common organic solvents.[2] The compound has no commercial applications.

Reactions

Reduction with sodium amalgam gives the dianion of the tricarbonyl:

CpV(CO)4 + 2 Na → Na2CpV(CO)3 + CO

Protonation of this salt gives Cp2V2(CO)5.[3]

Heating a mixture of cycloheptatriene and cyclopentadienylvanadium tetracarbonyl gives (cycloheptatrienyl)(cyclopentadienyl)vanadium ("trovacene").[4]

References

  1. ↑ Wilford, J.B.; Whitla, A.; Powell, H.M. (1967). "The Crystal and Molecular Structure of π-Cyclopentadienylvanadium Tetracarbonyl". Journal of Organometallic Chemistry. 8 (3): 495–502. doi:10.1016/S0022-328X(00)83671-2.
  2. ↑ King, R.B.; Stone, F.G.A (1963). Cyclopentadienyl Metal Carbonyls and Some Derivatives. Vol. 7. pp. 99–115. doi:10.1002/9780470132388.ch31. ISBN 9780470132388. {{cite book}}: |journal= ignored (help)
  3. ↑ Fischer, Ernst Otto; Schneider, Robert J. J. (1970). "Über Aromatenkomplexe von Metallen, CXIV. Darstellung und Reaktionen von Dicyclopentadienyl‐divanadin‐pentacarbonyl, (C 5 H 5 ) 2 V 2 (CO) 5". Chemische Berichte. 103 (11): 3684–3695. doi:10.1002/cber.19701031133.
  4. ↑ King, R. B.; Stone, F. G. A. (1959). "π-Cylopentadienyl-π-Cycloheptatrienyl Vanadium". Journal of the American Chemical Society. 81 (19): 5263–5264. doi:10.1021/ja01528a063.
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