自20世纪初Pfeiffer发现蓝紫色四乙二胺μ-二羟基-二铬(Ⅲ)氯化物后,不断制备出以羟基、氨基、卤素为桥梁的各种Cr(Ⅲ),Co(Ⅲ),Co(Ⅱ),Fe(Ⅲ),Pd(Ⅱ)多核络合物。继之溶液中多核络合物平衡的研究也逐渐增多,特别与水解作用相联系的羟联反应(olation)及氧联反应(oxolation),研究得比较广泛,并为C.L.Rollinson所总结。此后更涌现出大量的研究工作,不仅限于金属离子及配位化合物的水解聚 Since the early 20th century Pfeiffer found blue purple tetraethylenediamine μ-dihydroxy-dichromium (Ⅲ) chloride, the continuous preparation of a hydroxyl, amino, halogen bridge for the various Cr (Ⅲ), Co Co (Ⅱ), Fe (Ⅲ) and Pd (Ⅱ) polynuclear complexes. Further studies on the balance of polynuclear complexes in solution have also been gradually developed. Olation and oxolation, which are particularly associated with hydrolysis, have been studied extensively and summarized by C.L. Rollinson. Since then, a great deal of research work has emerged, which is not limited to the hydrolysis of metal ions and coordination compounds