Reaction of 1,1'-Bis(tetramethylcyclopentadienyl)ferrocene with Pentacarbonyl Iron and Triacetonitrile Tricarbonyl Molybdenum

Abstract

Abstract: The xylene solution of 1,2-bis(tetramethylcyclopentadienyl)ferrocene, 1,1'-Fc(Me₄Cp)₂(Ⅰ) and Fe(CO)₅ was refluxed for 10 h to yield ferrocene bridged bis(tetramethylcyclopentadienyl) tetracarbonyl, 1,1'-Fc[(Me₄Cp)Fe(CO)₂]₂(1). Futher reaction of compound 1 with I₂ in chloroform to yield Fe_Fe bond cleaved product, 1,1'-Fc[(Me₄Cp)Fe(CO)₂I]₂(2). compound Ⅰ reacted sequentially with n BuLi and Mo(MeCN)₃(CO)₃ to generate 1,1'-Fcbis[tetramethylcyclopentadienyltricarbonyl molybdenum anion salt], 1,1'-Fc(Me₄Cp)Mo(CO)₃^-Li⁺]₂(Ⅱ). Futher reaction of compound Ⅱ with MeIyielded the corresponding methylmolybdenum complex, 1,1'-Fc[(Me₄Cp)Mo(CO)₃Me]₂(3). The reaction of compound Ⅱ with BrCH₂CH₂Br did not gave the expected Mo_Mo binuclear compound, instead a small quantity of ferrocene bridged bis(molybdenum bromide) compound, 1,1'-Fc[(Me₄CpMo-(CO)₃Br]₂(4), which was isolated by nucleophilic substitution and elimination mechanism. The molecular structures of compounds 1_4 were characterized by elemental analyses, IRand ¹H NMRspectra. The crystal structure of compound 1 was determined by X-ray diffraction.

Key words: 1,1'-Bis(tetramethylcyclopentadienyl)ferrocene, Ferrocene-bridged bismetallic compound, Fulvalene, Crystal structure

CLC Number:

O624.12

TrendMD:

DENG Xiao-Bin, XU Shan-Sheng, WANG Bai-Quan, ZHOU Xiu-Zhong  . Reaction of 1,1'-Bis(tetramethylcyclopentadienyl)ferrocene with Pentacarbonyl Iron and Triacetonitrile Tricarbonyl Molybdenum[J]. Chem. J. Chinese Universities, 2000, 21(6): 898.

References

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