Cycloheptatrienemolybdenum tricarbonyl

Chemical compound From Wikipedia, the free encyclopedia

Cycloheptatrienemolybdenum tricarbonyl is the organomolybdenum compound with the formula (C7H8)Mo(CO)3. It is a red-orange solid that is soluble in nonpolar organic solvents. The compound has no practical value but is a prototypical complex of cycloheptatriene.

Quick facts Identifiers, Properties ...
Cycloheptatrienemolybdenum tricarbonyl
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/C7H8.3CO.Mo/c1-2-4-6-7-5-3-1;3*1-2;/h1-6H,7H2;;;;
    Key: WQAVHVQYKSYTII-UHFFFAOYSA-N
  • [C-]#[O+].[C-]#[O+].[C-]#[O+].C1C=CC=CC=C1.[Mo]
Properties
C10H8MoO3
Molar mass 272.12 g·mol−1
Appearance red-orange solid
Density 1.81 g/cm3
Melting point 100–101[1] Â°C (212–214 Â°F; 373–374 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 Â°C [77 Â°F], 100 kPa).
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Synthesis, structure, and reactions

The compound is prepared by thermal reaction of the triene with molybdenum hexacarbonyl:[2]

C7H8 + Mo(CO)6 → (C7H8)Mo(CO)3 + 3 CO

The compound is a piano stool complex, consisting of Mo(CO)3 bound to six carbon centers of the triene. The methylene group projects from the plane of the six coordinated carbon atoms.[3]

The compound reacts with trityl salts to give the cycloheptatrienyl complex:[4]

(C7H8)Mo(CO)3 + (C6H5)3C+ → [(C7H7)Mo(CO)3]+ + (C6H5)3CH

References

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