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用萃取化学方法对金(Ⅲ)在混合中性氧配体——磷酸三丁酯/二苯基亚砜(TBP/Ph_2SO)和TBP/三苯基膦氧(TBP/Ph_3PO)体系中的配位情况进行了研究。结果表明金没有与配体发生直接的配位作用,而是藉氢键方式与试剂形成两类配合物,其组成为[H_3O~+·2TBP·Ph_2SO·yH_2O]·AuCI_4~-·HCl和[H_3O~+·mTBP·nPh_3PO·yH_2O]·AuCl_~-(m=1或2,n=1或2,m+n=3).求算出相应配合物的表观生成常数logK=3.33,5.29和6.32.对配合物的形成机理及其结构亦进行了讨论.
Extraction chemistry of gold (Ⅲ) in mixed neutral oxygen ligands - TBP / Ph_2SO and TBP / triphenylphosphine oxide (TBP / Ph_3PO) system Bit situation has been studied. The results showed that gold did not directly coordinate with the ligand, but formed two kinds of complexes by hydrogen bond and reagent, which consisted of [H_3O ~ + · 2TBP · Ph_2SO · yH_2O] · AuCl_4 ~ - · HCl and [ (M = 1 or 2, n = 1 or 2, m + n = 3). The apparent formation constants of the corresponding complexes were calculated as log K = 3.33,5.29 and H 3 O ~ + · mTBP · nPh 3 PO · yH 2 O] 6.32. The formation mechanism of complex and its structure are also discussed.