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α,ω-dichloropermethyl polysilane reacted sequentially with cyclopentadienyl sodium, n-butyl lithium and zirconium tetrachloride to produce sila-bridged dicyclopentadienyl zirconium dichlorides, (Me2Si)n(C5H4)2ZrCl2, which were hydrolyzed under basic conditions to yield the title compounds, [(Me2Si)n(C5H4)2ZrCl]2O. Their structures were characterized by elemental analyses, 1HNMR and MS. Furthermore the crystal structures of two complexes were determined by X-ray diffraction method. The crystal (n = 2) is monoclinic, space group P21/c with a= 14.268(4), b = 7.812(1), c = 31.050(5)A; β = 99.59°; Z = 4; the factor R = 0.039. The crystal (n=3) is monoclinic, space group C2 with a = 19.944(1), b = 17.117(1), c = 15.966 (1)A; β= 128.68°; Z= 4; the factor R= 0.033. The effect of sila-bridge on the structure and properties of these complexes are discussed.
α, ω-dichloropermethyl polysilane composite sequentially with cyclopentadienyl sodium, n-butyl lithium and zirconium tetrachloride to produce sila-bridged dicyclopentadienyl zirconium dichlorides, (Me2Si) n (C5H4) 2ZrCl2, which were hydrolyzed under basic conditions to yield the title compounds, (Me2Si) n (C5H4) 2ZrCl] 2O. Their structures were characterized by elemental analyzes, 1H NMR and MS. Further the crystal structures of two complexes were determined by X-ray diffraction method. The crystal (n = 2) is monoclinic, space group P21 / c with a = 14.268 (4), b = 7.812 (1), c = 31.050 (5) A; β = 99.59 °; Z = 4; the factor R = 0.039. The crystal (n = 3) is The monoclinic space group C2 with a = 19.944 (1), b = 17.117 (1), c = 15.966 (1) A; β = 128.68 °; Z = 4; the factor R = 0.033. the structure and properties of these complexes are discussed.