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Chemical compound From Wikipedia, the free encyclopedia
Molybdocene dichloride is the organomolybdenum compound with the formula (η5-C5H5)2MoCl2 and IUPAC name dichlorobis(η5-cyclopentadienyl)molybdenum(IV), and is commonly abbreviated as Cp2MoCl2. It is a brownish-green air- and moisture-sensitive powder. In the research laboratory, it is used to prepare many derivatives.
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Names | |||
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IUPAC name
dichlorobis(η5-cyclopentadienyl)molybdenum(IV) | |||
Other names
molybdocene dichloride, molybdenocene dichloride, dichloridobis(cyclopentadienyl)molybdenum(IV) | |||
Identifiers | |||
3D model (JSmol) |
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ChemSpider | |||
ECHA InfoCard | 100.159.644 | ||
PubChem CID |
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CompTox Dashboard (EPA) |
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Properties | |||
C10H10Cl2Mo | |||
Molar mass | 297.04 g·mol−1 | ||
Appearance | greenish-brown powder | ||
insoluble, moisture sensitive | |||
Hazards | |||
Safety data sheet (SDS) | [1] | ||
Related compounds | |||
Related compounds |
Ferrocene Zirconocene dichloride Vanadocene dichloride Niobocene dichloride Titanocene dichloride Tantalocene 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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The compound is prepared from molybdocene dihydride by treatment with chloroform:[2]
The compound adopts a "clamshell" structure where the Cp rings are not parallel, the average Cp(centroid)-M-Cp angle being 130.6°. The two chloride ligands are cis, the Cl-Mo-Cl angle of 82° being narrower than in niobocene dichloride (85.6°), which in turn is less than in zirconacene dichloride (92.1°). This trend helped to establish the orientation of the HOMO in this class of complex.[3]
Unlike the titanocene and zirconacene derivatives, the molybdocene compounds have yielded no commercial applications.
All metallocene dihalides exhibit some anti-cancer activity,[4] but these have not yielded useful compounds in the clinic.[5]
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