四甲基二硅桥连二(环已基环戊二烯基)四羰基二铁的合成、结构及热重排反应研究  

Synthesis, Structure and Thermal Rearrangement Reaction of Tetramethyldisilane-bridged Bis (cyclohexylcyclopentadienyl) tetracarbonyldiiron

作　　者：孙秀丽[1] 王佰全[1] 徐善生[1] 周秀中[1] 翁林红[2] 

机构地区：[1]南开大学化学系 [2]复旦大学化学系,上海200433

出　　处：《有机化学》2003年第7期666-670,共5页Chinese Journal of Organic Chemistry

基　　金：国家自然科学基金(Nos.29972023;20202004);高等学校博士学科点专项科研基金(No.2000005504);教育部留学回国人员科研启动基金(No.2001-345)

摘　　要：1,2-二(环己基环戊二烯基)四甲基二硅烷与Fe(CO)_5在二甲苯中加热回流生成二铁化合物(Me_2SiSiMe_2)[(c-C_6H_(11)-C_5H3)Fe(CO)]_2(μ-CO)_2(2).通过柱层析分离到2的顺反两种异构体2c和2t,并分别进行热重排反应,发现顺式底物2c重排生成反式重排产物[Me_2Si(c-C_6H_(11)C_5H_3)Fe(CO)_2]_2(3t),而反式底物2t重排则生成顺式重排产物3c.这表明重排反应是立体专一性的。通过X射线衍射分析测定了化合物2c和3t的晶体结构。The reaction of 1,2-bis(cyclohexylcyclopentadienyl)tetramethyldisilane with Fe(CO)(5) in refluxing xylene afforded a mixture of cis and trans isomers of the diiron complex (Me2SiSiMe2) [(c-C6H11C5H3)Fe(CO)](2)(mu-CO)(2) (2), which were separated by column chromatography. When the two isomers were heated in refluxing xylene, the cis substrate 2c rearranged to the trans product [Me2Si(c-C6H11C5H3)Fe(CO)(2)](2) (3t), while the trans substrate 2t to the cis product 3c. This indicates that the rearrangement reaction is stereospecific. Molecular structures of 3c and 4t were determined by X-ray diffraction analysis.

关 键 词：四甲基二硅桥连二(环己基环戊二烯基)四羰基二铁 合成 晶体结构 热重排反应 环戊二烯基 立体专一性 X射线衍射 

分 类 号：O621.25[理学—有机化学]