Brown Loren, Marron Danny, Smith Casey, Merola Joseph
Virginia Tech, Dept. of Chemistry 0212, Blacksburg, VA, 24060, USA.
Acta Crystallogr E Crystallogr Commun. 2018 Jun 26;74(Pt 7):1017-1020. doi: 10.1107/S2056989018008885. eCollection 2018 Jul 1.
The structure of the dimer bis-{tricarbon-yl[η-tetra-meth-yl(pheneth-yl)cyclo-penta-dien-yl]molybdenum}(-), [Mo(CH)(CO)], at 102 K has triclinic ( ) symmetry. The reaction between tetra-meth-yl(pheneth-yl)cyclo-penta-diene and molybdenum hexa-carbonyl 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 tetra-meth-yl(pheneth-yl)cyclo-penta-dienylmolybdenumtricarbonyl moiety and the entire dimeric mol-ecule 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)] compounds listed in the CSD and slightly below the mean for [Cp*Mo(CO)] complexes.
二聚体双-{三羰基[η-四甲基(苯乙基)环戊二烯基]钼}(-)，即[Mo(CH)(CO)]，在102 K时具有三斜晶系（ ）对称性。四甲基(苯乙基)环戊二烯与六羰基钼在回流二甲苯中反应18小时，得到二聚体，产率为56%，为红色固体。该结构的不对称单元是四甲基(苯乙基)环戊二烯基钼三羰基部分，整个二聚体分子由反演对称性生成。Mo-Mo键长为3.2773(3) Å，该值略高于剑桥晶体结构数据库（CSD）中列出的所有[CpMo(CO)]化合物的平均值，略低于[Cp*Mo(CO)]配合物的平均值。
