Synthesis of mono- and trinuclear palladium(II) complexes via oxidative addition of a bulky hexathioether containing a disulfide bond to palladium(0)
作者:Daisuke Shimizu、Nobuhiro Takeda、Norihiro Tokitoh
DOI:10.1016/j.jorganchem.2006.10.056
日期:2007.6
The oxidative addition reactions of a bulky hexathioether containing a disulfide bond, TbtS(o-phen)S(o-phen)SS(o-phen)S(o-phen)STbt (1) (Tbt = 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl, o-phen = o-phenylene), to a palladium(0) complex were studied. In the reaction of 1 with 3 molar amounts of [Pd(PPh3)4], a trinuclear palladium(II) complex, [Pd3S(o-phen)S}2(o-phen)STbt}2(PPh3)2] (2), was formed
含有二硫键的大体积六硫醚TbtS(o -phen )S(o -phen)SS(o -phen )S(o -phen)STbt(1)的氧化加成反应(Tbt = 2,4,6-研究了三[双(三甲基甲硅烷基)甲基]苯基,邻-苯基= 邻-亚苯基)与钯(0)的配合物。在1与3摩尔量的[Pd(PPh 3)4 ]的反应中,三核钯(II)络合物[Pd 3 S(o -phen)S} 2 (o -phen)STbt} 2( PPh 3)2 ](2)是通过三步钯插入反应形成的,包括不寻常的C(芳基)–S键裂解。另一方面,1与等摩尔量的[Pd(PPh 3)4 ]反应得到具有伪八面体结构的单核钯(II)配合物,[Pd S(o- phen)S(o- phen) )STbt} 2 ](3)。钯原子在3中的六配位几何结构通过分子中的原子(AIM)分析得到证实,该分析揭示了中心Pd原子和S原子在轴向位置之间存在键临界点