3-苯基偶氮-5-磺基水杨酸与过渡金属(Ⅱ),稀土(Ⅲ),钼(Ⅵ)的络合物稳定性  

The Stability of the Complexes of 3 phenylazo 5 sulfo salicylic Acid with Transition Metal (Ⅱ),Rare Earth (Ⅲ) and Molybdenum(Ⅵ)

作　　者：储艳秋[1] 张华麟[1] 

机构地区：[1]复旦大学化学系

出　　处：《复旦学报（自然科学版）》1999年第1期29-33,共5页Journal of Fudan University：Natural Science

基　　金：国家自然科学基金

摘　　要：用ｐＨ电位法研究了３－苯基偶氮－５－磺基水杨酸与过渡金属Ｃｕ（Ⅱ），Ｎｉ（Ⅱ），Ｃｏ（Ⅱ），Ｚｎ（Ⅱ），稀土Ｎｄ（Ⅲ），Ｌａ（Ⅲ）和Ｍｏ（Ⅵ）二元体系以及与Ｎｄ（Ⅲ）－ＥＤＴＡ混配体系在２５℃，离子（ＣｌＯ－１４）强度为０．１ｍｏｌＬ－１时的络合行为．用ＳＣＯＧＳ或ＳＣＯＧＳ２程序计算了体系中存在的各种络合质点的累积生成常数；并讨论了滴定曲线。The coordination behavior of 3 phenylazo 5 sulfo salicylic acid (PASSA) with Cu(Ⅱ),Ni (Ⅱ),Co (Ⅱ),Zn (Ⅱ),La(Ⅲ),Nd (Ⅲ),Mo (Ⅵ) respectively as binary system and Nd (EDTA) mixed ligand complex have been studied pH metrically in aqueous solution at (25.0±0.1) ℃,0.1 mol·L -1 ionic (ClO - 4) strength. The cumulative formation constants of all kinds of complexes have been calculated with SCOGS or SCOGS2 program. The pH titration curves,the stability of complexes,and the changes among different complex species equilibria have been discussed.

关 键 词：过渡金属 稀土 钼 配合物 稳定性 PASSA 

分 类 号：O641.4[理学—物理化学] O614.33[理学—化学]