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Synthesis and Structure of $\eta^4$-1-Functionally Substituted-2,3,4,5-Tetraphenyl-1-Silacyclopentadienyl Complexes of Irontricarbonyl. Crystal Structure of ($\eta^4$-exo-Cyclopentadienyldicarbonyliron-endo-1-Methyl-2,3,4,5-Tetraphenyl-1-Silacyclopentadienyl)Tricarbonyliron

  • Jinkook Kang (Department of Chemical Education,Korean National University of Education) ;
  • Jaejung Ko (Department of Chemical Education,Korean National University of Education) ;
  • Youngkun Kong (Department of Chemistry, Kyunggi University) ;
  • Chang Hwan Kim (Department of Chemistry, Yonsei University) ;
  • Myong Euy Lee (Department of Chemistry, Yonsei University) ;
  • Patrick J. Carroll (Department of Chemistry, University of Pennsylvania)
  • Published : 1992.10.20

Abstract

New silicon-monosubstituted (${\eta}^4$-2,3,4,5-tetraphenyl-1-silacyclopentadiene)transi tion metal complexes are described. The new (silole-transition metal complex)Fe$(CO)_3$ was obtained from the reaction of silole-tansition metal complex and Fe$(CO)_5$. We have determined the crystal structure of (${\eta}^4$-exo-cyclopentadienyldicarbonyliron-endo-1-meth yl-2,3,4,5-tetraphenyl-1-silacyclopentadienyl)tric arbonyliron by using graphitemonochromated Mo-$K_{\alpha}radiation. The compound was crystallized in the monoclinic space group $P2_1$/c with a = 8.925(1), b = 18.689(3), c = 19.930(3) ${\AA}$, and ${\beta}$ = 102.02$(1)^{\circ}$. The iron moiety CpFe$(CO)_2$ on silicon is in an axal position. The (silole-transition metal complex) Fe$(CO)_3$ was also prepared through the reaction of (${\eta}^4$-1-chloro-2,3,4,5-tetraphenylsilacyclopentadiene) Fe$(CO)_3$ and metal complex nucleophile. The structure configuration was studied by conventional spectroscopy.

Keywords

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