含氮、硫螯合树脂与Au(Ⅲ)的螯合性能和状态

Coordination Properties and States between Chelating Resin Containing N, S, and Au(Ⅲ)

用光电子能谱(ESCA)和红外光谱等方法测定了螯合树脂中N(ls)、S(2p)和Au(Ⅲ)的电子结合能和络合状态,结果说明N、S都参与了和Au(Ⅲ)的络合,N上的孤对电子向Au(Ⅲ)转移形成配键,而配位基>S除它的价层电子向Au(Ⅲ)转移形成配键外,还有Au(Ⅲ)的5 d轨道上的电子向S(3 d)空轨道转移形成反馈键,但是σ电子给出和π电子接受的作用不一定在同一个配位基>S上发生。

The coordination states and the binding energies of N(1s), S(2p) in chelating resin withAu(Ⅲ) after complexing have been determined by ESCA and infrared spectrophotometric me-thod. The results show that N, S in chelating resin all coordinate with Au(Ⅲ).