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Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (11): 1629.

• Articles • Previous Articles     Next Articles

Synthesis and Structure of Tetramethyldisilandiyl Bis(3-trimethylsilylcyclopentadienyl)Tetracarbonyl Di-Iron and Its Related Compounds

KONG Chui-Hua1, XU Shan-Sheng2, ZHOU Xiu-Zhong2   

  1. 1. Ecology Institute, South China Agricultural University;
    2. Department of Chemistry, Nankai University, Tianjin, 300071
  • Received:1994-01-21 Revised:1994-04-07 Online:1994-11-24 Published:1994-11-24

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Abstract: Asmall amount of the title compound 5(5%)and a desilylated complex(Me2SiSiMe2)[C5H4Fe(CO)]2(μ-CO)2(1)(3%)and its rearrangement isomer[Me2SiC5H4Fe(CO)2]2(2)(16%) were obtained from the reaction of 1, 2-bis(3-trimethylsilylcyclopentadienyl)tetramethyldisilane with Fe (CO)5 at 105110℃.When a xylene solution of 5 was refluxed for 18h, compound [Me2Si(3-Me3Si-C5H3)Fe(CO)2]2(6), as a rearrangement isomer of 5 was obtained in58% yield.It was proved that desilylation of Me3Sioccured in the process of preparing5 and desilylation is related to the(Me2SiSiMe2)-bridge of the reactant.The crystal structure of 5 was determined by X-ray diffraction, The crystal is monoclinic, space group P21/m with a=0.6780(1)nm, b=2.2303(9)nm, c=0.9988(1)nm, β=98.96(1)°, V=1.496 nm3, 2=2, Dc=1.36 g/cm3.The final deviation factor Ris0.044.

Key words: Bis(3-trimethylsilylcyclopentadienyl) tetramethyldisilane, Thermal rearrangement reaction, Desilylation

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