Synthesis and catalytic reactivity of mononuclear substituted tetramethylcyclopentadienyl molybdenum carbonyl complexes
作者:Zhi-Hong Ma、Lin-Qian Lv、Hong Wang、Zhan-Gang Han、Xue-Zhong Zheng、Jin Lin
DOI:10.1007/s11243-015-0014-3
日期:2016.3
corresponding mononuclear substituted tetramethylcyclopentadienyl molybdenum carbonyl complexes [(η5-C5Me4R)MoI(CO)3] [R = allyl (1), nBu (2), tBu (3), Ph (4), Bz (5)]. The molecular structures of complexes 2, 3 and 5 were determined by X-ray diffraction analysis. The results show that the substituent in the ring can directly affect the Mo–I bond distances; the more sterically hindered the substituent, the
五种双核羰基配合物 [(η5-C5Me4R)Mo(CO)3]2 [R = 烯丙基、nBu、tBu、Ph、Bz] 与 I2 在氯仿溶液中的反应得到相应的单核取代四甲基环戊二烯基钼羰基配合物 [(η5 -C5Me4R)Mol(CO)3] [R = 烯丙基 (1), nBu (2), tBu (3), Ph (4), Bz (5)]。通过X射线衍射分析确定了配合物2、3和5的分子结构。结果表明环中的取代基可以直接影响Mo-I键的距离;取代基的空间位阻越大,Mo-I 键越长。芳香族化合物与由配合物催化的各种烷基化试剂的弗里德尔-克来福特反应表明,所有这些单核钼羰基配合物在弗里德尔-克来福特烷基化反应中都具有催化活性。确实,