浸金药剂研究(Ⅱ)浸金络合物的微观结构

The molecular structure of gold lixivants complexes

本文运用结构化学、量子化学和配位化学研究了浸金络合物的微观结构,发现其结构特征是金与浸出剂之间形成了σ型二原子配键和另一种电子流向相反的离域多中心反馈π键,即σ—π反馈配键,由此得出分子或离子作为浸金剂的必要条件是:1> 含较高能级的满充σ型轨道,2> 含能量较低的π型空轨道且其对称性与金的5d满充轨道匹配。

The molecular structure of gold-lixiviants complex is studied by using Structural Chem.,Quantum Chem., and Coordination chem..The structural character of this kind complexes is that a o tyPe donor bond and another it tyPe multiple-back bond are formed between gold and lixiviants. Then the necessary factors of a lixiviant are clear: 1> containing o type higher occupied orbitals.2>contaiaing π type lower unoccupied orbitals and their symmetry are the same as that of occupied 5d orbitals of gold.