1,1,6,6-Tetramethyl-1,5,6-trisilaspiro[4.4]nonane was reacted with bis(tert-alkyl isocyanide)palladium(0) and (η5-cyclopentadienyl)(η3-allyl)palladium(II) through oxidative addition of the Si−Si bonds to afford a dinuclear palladium(II) complex and a stable palladium(IV) complex, respectively. The latter palladium(IV)-complex-catalyzed ring-opening polymerization of 1,1,2,2-tetramethyl-1,2-disilacyclopentane
1,1,6,6-四甲基- 1,5,6-trisilaspiro [4.4]
壬烷与双(叔烷基异
氰化物)
钯(0)和(η 5 -
环戊二烯基)(η 3 -烯丙基)合
钯( II)通过Si-Si键的氧化加成分别得到双核
钯(II)配合物和稳定的
钯(IV)配合物。1,2,1,2,2-四甲基-1,2-二
硅杂
环戊烷的
钯(IV)络合物催化的开环聚合反应使有机
硅聚合物具有高分子量。