摘要
本文报导了用 pH 法测定对乙酰基偶氮羧的三级离解常数.在 I=0.1,t=25℃±0.5℃条件下,Ka_3=10^-4.36,Ka_4=10^-8.95,Ka_5=10^-9.39.并用分光光度法测得了钡与对乙酰基偶氮羧配合物的第一级稳定常数 K_1=10~5.70,第二级稳定常数 K_2=10~4.94,还对其配位机理进行了初步探讨.
The three stage dissociation constants of p-acetyl carboxysulfonazo were determined by pH-method.They are Ka_3=10^(-4.36),Ka_4=10^(-8.95),Ka_5= 10^(-9.39) respectively,at conditions:I=0.1,t=25℃±0.5℃ its stability constants of barium coordination were obtained from spectrophotometric measurements.Its first stage stability K_1=10^(5.70),second stage stability K_2=10^(4.94).Its coordination mechanies were also deduced.
出处
《辽宁大学学报（自然科学版）》
CAS
1993年第1期76-80,共5页
Journal of Liaoning University：Natural Sciences Edition
关键词
乙酰基偶氮羧
离解常数
钡络合物
P-aceptyl carboxysulfonazo
Dissociation constant
Coordination stadility constant
