Synthetic and reactivity studies of mono- and dicyclopentadienyl titanium, zirconium and hafnium complexes with the chlorodimethylsilyl-cyclopentadienyl ligand. X-ray molecular structure of Hf{(η5-C5H4)SiMe2OSiMe2(η5-C5H4)}Cl2 and Zr(η5-1,3-tBu2C5H3)(η5-C5H4SiMe2-η-NtBu)Cl
作者:Santiago Ciruelos、Alfredo Sebastián、Tomás Cuenca、Pilar Gómez-Sal、Antonio Manzanero、Pascual Royo
DOI:10.1016/s0022-328x(00)00213-8
日期:2000.6
Reaction of the disilylated cyclopentadiene C5H4(SiClMe2)(SiMe3) with HfCl4, in heptane, gave the monocyclopentadienyl complex Hf(η5-C5H4SiClMe2)Cl3 (1c). Addition of two equivalents of C5H5(SiClMe2) to a solution of MCl4, in toluene under reflux and in the presence of two equivalents of NEt3, afforded the dichloro derivatives M(η5-C5H4SiClMe2)2Cl2 [M=Ti (2a), Hf (2c)]. Compounds 2a and 2c react with a
的二甲硅烷基化的环戊二烯的C反应5 ħ 4(SiClMe 2)(森达3)用的HfCl 4,在庚烷中,得到单环戊二烯基络合物的Hf(η 5 -C 5 H ^ 4 SiClMe 2)氯3(1C)。的C两个当量的另外5 ħ 5(SiClMe 2)到的MC1中的溶液4在回流下和在网的两个当量的存在下,在甲苯3,得到二氯衍生物M(η 5 -C 5 H ^ 4 SiClMe2)2 Cl 2 [M = Ti(2a),Hf(2c)]。化合物2A和2C与水与SiCl键的选择性水解的化学计量量的反应,得到四甲基二硅氧烷桥连络合物diciclopentadienylμ(η 5 -C 5 H ^ 4)森达2 OSiMe 2(η 5 -C 5 H ^ 4)} Cl 2 [M = Ti(3a),Hf(3c)]。三氯金属的化合物反应M(η 5 -C 5 H ^ 4SiClMe 2)氯3与铊(1,3-吨卜2 ç 5 ħ