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Synthesis and Characterization of ansa-Bis(3-chiral groupsubstituted indenyl) Zirconium Complexes

  • Zhao Ruiguo ,
  • Ma Haiyan
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  • a Laboratory of Organometallic Chemistry, East China University of Science and Technology, Shanghai 200237;
    b School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021

Received date: 2013-10-29

  Revised date: 2013-12-10

  Online published: 2013-12-27

Supported by

Project supported by the National Natural Science Foundation of China (Nos. 20774027, 21274041) and the Fundamental Research Funds for the Central Universities (No. WK1214048).

Abstract

Ethylene or methylene bridged bis(indenyl) compounds 1a3a bearing chiral substituent have been obtained by introducing (+)-neomenthyl or (+)-isocamphyl to the 3-position of indenyl ring. Two C2-symmetric ethylene bridged bis(indenyl) zirconium complexes 2b and 3b have been isolated readily from the reaction of the dilithium salts of these compounds with zirconium tetrachloride. The purification of corresponding meso-like, C1-symmetric complexes 2c and 3c was however not successful. All of the proligand compounds and zirconium complexes have been characterized by 1H NMR, 13C NMR spectra and elemental analysis (or HRMS). The molecular structure of 2c was further determined by X-ray single crystal diffraction analysis. The crystal of 2c belongs to orthorhombic, space group P2(1)2(1)2(1) with cell parameters a=10.946(4) Å, b=13.377(4) Å, c=24.294(8) Å, α=β=γ=90°, Mr=694.94, V=3557(2) Å3, Dc=1.298 g/cm3, Z=4, F(000)=1464, μ=0.486 mm-1, R=0.0296 and wR=0.0683 [I>2s(I)].

Cite this article

Zhao Ruiguo , Ma Haiyan . Synthesis and Characterization of ansa-Bis(3-chiral groupsubstituted indenyl) Zirconium Complexes[J]. Chinese Journal of Organic Chemistry, 2014 , 34(4) : 821 -828 . DOI: 10.6023/cjoc201310047

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