联合处理电位法和极谱法得到的实验数据确定金属配合物稳定常数(英文)  

Determination of Metal Complex Stability Constants by a UnifiedTreatment Method for Potentiometric and Polarographic Data

作　　者：张建民[1] 王志武[1] 石秋芝[1] 

机构地区：[1]郑州大学化学系,郑州450052

出　　处：《无机化学学报》2004年第3期324-329,230-239,共9页Chinese Journal of Inorganic Chemistry

基　　金：教育部留学回国人员科研启动基金资助项目(No.2003)。

摘　　要：The cadmium(Ⅱ)glycinamide system was modeled and its stability constants were calculated by a unified mathematical treatment for experimental data obtained from ion selective electrode (ISE) and differential pulse polarography (DPP). It has been shown that very much the same experimental complex formation curve (ECFC) and theoretical complex formation curve (TCFC) could be given from both experimental techniques for the same experimental conditions, such as the same total ligand c(LT) and metal ion c(MT) concentrations. The combination of the two techniques is of many advantages as ISE can be performed at low a c(LT):c(MT) ratio and significantly higher c(MT), whereas DPP could be used well at larger the c(LT):c(MT) ratio and very low c(MT). This makes it possible to study a metal-ligand system in much broader range of experimental conditions that, in turn, provides us more data and information about the metal-ligand system of interest. Application of the unified mathematical treatment to the cadmium-glycinamide system in this paper, three new complexes MHL, ML3 and ML3(OH) as well as two complexes ML and ML2, reported in literatures, could be modeled and all their stability constants have been refined.The cadmium(Ⅱ)glycinamide system was modeled and its stability constants were calculated by a unified mathematical treatment for experimental data obtained from ion selective electrode (ISE) and differential pulse polarography (DPP). It has been shown that very much the same experimental complex formation curve (ECFC) and theoretical complex formation curve (TCFC) could be given from both experimental techniques for the same experimental conditions, such as the same total ligand c(LT) and metal ion c(MT) co...

关 键 词：金属配合物 极谱法 电位法 稳定常数 

分 类 号：O641.4[理学—物理化学]