with HBF 4 in CH 2 Cl 2 leads to the formation of IrH 4 P 3 + . T 1 measurements along with reactivity studies suggest that this complex contains two hybride ligands and a coordinated dihydrogen molecule. Since H 2 is easily lost from this species, IrH 4 P 3 + serves as a convenient precursor to the highly reactive, unsaturated hybride species IrH 2 P 3 + . IrH 4 P 3 + reacts with ethylene to initially
IrH 3 P 3 (P=PMe 2 Ph) 与 HBF 4 在 CH 2 Cl 2 中的
化学计量质子化导致形成 IrH 4 P 3 + 。T 1 测量值以及反应性研究表明,该复合物包含两个混合
配体和一个协调的二氢分子。由于 H 2 很容易从该物种中丢失,因此 IrH 4 P 3 + 充当高反应性、不饱和杂种物种 IrH 2 P 3 + 的方便前体。IrH 4 P 3 + 与
乙烯反应,最初形成氢化
乙烯配合物顺式,聚体-IrH 2 (C 2 H 4 )P 3 + 。对该复合物的标记研究表明存在杂交乙基平衡伙伴