determined. While the oxidative addition of Ph2Se2 mainly involves the clevage of the Se–Se bond, that of Ph2Te2 indicates the rupture of both Te–Te and C–Te. Cumulative evidence shows that the choice of the central atom and the solvent also plays an important role in the oxidative addition. The final polynuclear complexes can be conceived to be formed from the mononuclear addition products by sequential
在
二氯甲烷中向[Pd(PPh 3)4 ]氧化二苯二
硒化物导致形成双核络合物[Pd 2(SePh)4(PPh 3)2 ](1)和单核络合物[PdCl(SePh) (PPh 3)2 ](2)已经通过X射线晶体学和31 P-NMR光谱鉴定并在结构上表征。涉及二苯基二
碲化物的类似反应导致产物的混合物。[Pd 6 Cl 2 Te 4(TePh)2(PPh 3)可以分离出6 ]·1 / 2CH 2 Cl 2(3),并确定其X射线结构。虽然Ph 2 Se 2的氧化主要涉及Se-Se键的升高,但Ph 2 Te 2的氧化表明Te-Te和C-Te均断裂。累积证据表明,中心原子和溶剂的选择在氧化加成中也起着重要作用。最终的多核复合物可以被认为是通过顺序缩合步骤由单核加成产物形成的。