摘要
本文将铂族金属难溶配合物分为中性配合物、螯合物、有机酸盐及离子盐四类。配离子盐又分为配阴离子与一价无机阳离子、配阴离子与有机阳离子以及配阴离子与配阳离子三种。举例说明了溶解度低的原因，归纳了一些溶解度规律，并用“空腔作用”与“最小电荷密度原理”定性地作了理论解释。
The insoluble or sparingly soluble coordination compounds of PGMs were classified as four types:neutral coordination compound,chelate compound,organic acidic salt, and coodination ionic salt. Among them,the coordination ionic salts were classified as the salt Of coordination anion and monovalent inorganic cation, the salt of coordination anion and monovalent organic cation, and the saIt of coordination anion and coordInation cation,and so on. Some regularities of the solubilities were induced for the coordination ionic salts from a number of experilnental results in the references. It was found that(1) divalent and trivalent ions of base metals,such as Mg￣(2+),Cu￣(2+),Al￣(3+),Fe￣(3+),and the coordination anions of PGMs can not form insoluble salts;(2)among ,,and,only and monovalent inorganic cations having big sizc such as ,K￣+, Rb￣+,Cs￣+,and monovdlent organic can form insoluble salts;(3)the solubility of the sparingly cations solubie coordination ionic salts would decrease with the incret1se of the size of monovalent cation and ligands.The reasons for low solubility of above mentioned four coordination compounds and the explanation of solubility ragularity by The Cavitation Effect and The Least Charge Density Rule were represented.
出处
《贵金属》
CAS
CSCD
北大核心
1994年第1期15-24,共10页
Precious Metals
关键词
络合物
溶解度
铂系元素
Platinum metal, Complex,Solubility
