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Names | |||
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IUPAC name
Dichlorobis(η5-cyclopentadienyl) vanadium
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Other names
Dicyclopentadienyl vanadium dichloride
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Identifiers | |||
3D model (JSmol)
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Abbreviations | Cp2VCl2 | ||
ECHA InfoCard | 100.031.943 | ||
EC Number |
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PubChem CID
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RTECS number |
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UNII | |||
UN number | 3285 | ||
CompTox Dashboard (EPA)
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Properties | |||
C10H10Cl2V | |||
Molar mass | 252.03 g/mol | ||
Appearance | Green solid | ||
Density | 1.7 g/ml | ||
Melting point | decomposes | ||
Boiling point | decomposes | ||
Soluble (Hydrolysis) | |||
Structure | |||
Monoclinic | |||
Tetrahedral | |||
Hazards | |||
Occupational safety and health (OHS/OSH): | |||
Main hazards
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Irritant | ||
GHS labelling: | |||
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Danger | |||
H301, H315, H319, H335 | |||
P261, P264, P270, P271, P280, P301+P310, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, P501 | |||
NFPA 704 (fire diamond) | |||
Related compounds | |||
Related compounds
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Titanocene dichloride Zirconocene dichloride Hafnocene dichloride Niobocene dichloride Tantalocene dichloride Molybdenocene dichloride Tungstenocene dichloride | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Vanadocene dichloride is an organometallic complex with formula (η5-C5H5)2VCl2 (commonly abbreviated as Cp2VCl2). It is a structural analogue of titanocene dichloride but with vanadium(IV) instead of titanium(IV). This compound has one unpaired electron, hence Cp2VCl2 is paramagnetic. Vanadocene dichloride is a suitable precursor for variety of bis(cyclopentadienyl)vanadium(IV) compounds.
Preparation
[edit]Cp2VCl2 was first prepared by Wilkinson and Birmingham via the reaction of NaC5H5 and VCl4 in THF.[1]
Reactions and use
[edit]The compound has been used in organic synthesis.[2]
Reduction of vanadocene dichloride gives vanadocene, (C5H5)2V.
Like titanocene dichloride, this organovanadium compound was investigated as a potential anticancer drug. It was conjectured to function by interactions with the protein transferrin.[3]
References
[edit]- ^ Wilkinson, G.; Birmingham, J. G. (1954). "Bis-cyclopentadienyl Compounds of Ti, Zr, V, Nb and Ta". J. Am. Chem. Soc. 76 (17): 4281–4284. doi:10.1021/ja01646a008.
- ^ Hirao, T.; Ogawa, A.; Asahara, M.; Muguruma, Y.; Sakurai, H. (2005). "d,l-Selective Pinacol-Type Coupling Using Zinc, Chlorosilane, and Catalytic Amount of Cp2VCl2; dl-1,2-Dicyclohexylethanediol". Organic Syntheses. 81: 26.
- ^ Honzíček, Jan; Vinklárek, Jaromír (2015). "Bioinorganic chemistry of vanadocene dichloride". Inorganica Chimica Acta. 437: 87–94. doi:10.1016/j.ica.2015.08.008.