有机化学 ›› 2003, Vol. 23 ›› Issue (7): 666-670. 上一篇    下一篇

研究论文

四甲基二硅桥连二(环己基环戊二烯基)四羰基二铁的合成、结构及热量排反应研究

孙秀丽;王佰全;徐善生;周秀中;翁林红   

  1. 南开大学化学系;复旦大学化学系
  • 发布日期:2003-07-25

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

Sun Xiuli;Wang Baiquan;Xu Shansheng;Zhou Xiuzhong;Weng Linhong   

  1. State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University
  • Published:2003-07-25

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_5H_3)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。

关键词: 硅烷 P, X射线衍射分析, 晶体结构, 重排反应, 铁化合物, 专一性

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 (MezSiSiM^tCc- CgHnCsI^FeCCCO^C^-CC)^ (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-C6HnC5H3) 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.

Key words: SILANE P;XRD;CRYSTAL STRUCTURE;REARRANGEMENT REACTION;IRON COMPOUNDS, SPECIFICITY

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