Crystal structure of the tetra­meth­yl(pheneth­yl)cyclo­penta­dienylmolybdenumtricarbonyl dimer

The structure of the dimer bis­{tricarbon­yl[η(5)-tetra­meth­yl(pheneth­yl)cyclo­penta­dien­yl]molybdenum}(Mo—Mo), [Mo(2)(C(17)H(21))(2)(CO)(6)], at 102 K has triclinic (P [Image: see text]) symmetry. The reaction between tetra­meth­yl(pheneth­yl)cyclo­penta­diene and molybdenum hexa­carbonyl in refluxing xylenes for 18 h led to a 56% yield of the dimer as a red solid. The asymmetric unit of the structure is the tetra­meth­yl(pheneth­yl)cyclo­penta­dienylmolybdenumtricarbonyl moiety and the entire dimeric mol­ecule is generated by inversion symmetry. The Mo—Mo bond length is 3.2773 (3) Å, a value slightly above the mean value for all [CpMo(CO)(3)](2) compounds listed in the CSD and slightly below the mean for [Cp*Mo(CO)(3)](2) complexes.