关键词: 手性基团取代茚, 桥联二茚配体, 茚锆络合物, 合成, 晶体结构

Ethylene or methylene bridged bis(indenyl) compounds 1a～3a 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°, M_r=694.94, V=3557(2) ų, D_c=1.298 g/cm³, Z=4, F(000)=1464, μ=0.486 mm^-1, R=0.0296 and wR=0.0683 [I>2s(I)].

Key words: chiral group substituted indene, bridged bis(indenyl) ligand, zirconium complex, synthesis, crystal structure