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The complexes of TiCl_4, MgCl_2 and esters which are significant in industry have beenstudied by X-ray diffraction, IR and uv spectra. Their single crystal structures have also beendetermined. TiCl_4 and PhCOOEt can form two complexes, TiCl_4·L and TiCl_4·2L·MgGl_2, CH_3COOEtand H_2O form complex MgCl_2·2CH_3COOEt·2H_2O. All of them are molecular crystals. Theirspacial groups are C_(2h)~5-P2_1/c, C_(2h)~5-P2_1/n and C_(2h)~6-C_2/c respectively. From the XRD powderpattern, it has been ascertained that TiCl_4·L is formed in the process of the catalyst prepara-tion with milling-soaking method. Comparison between the IR spectra of the catalyst and Mgcomplex indicates that the coordinative bonds of the surface complex of the catalyst are verysimilar to that of the complex.
The complexes of TiCl_4, MgCl_2 and esters which are significant in industry have been manufactured by X-ray diffraction, IR and uv spectra. Their single crystal structures have also been determined. TiCl_4 and PhCOOEt can form two complexes, TiCl_4 · L and TiCl_4 · 2L · Theirspacial groups are C_ (2h) ~ 5-P2_1 / c, C_ (2h) ~ 5-P2_1 / n and C_ (2h) ~ 6 -C 2 / c respectively. From the X-ray powder pattern, it has been ascertained that TiCl_4 · L is formed in the process of the catalyst prepara- tion with milling-soaking method. Comparison between the IR spectra of the catalyst and Mgcomplex indicates that the coordinative bonds of the surface complex of the catalyst are verysimilar to that of the complex.