氯化解磷定钯（II）配合物在水溶液中稳定性的电位滴定研究

Potentiometric investigation of the stability of palladium(II) complex of pralidoxime chloride in aqueous solution.

作者信息

Karljiković-Rajić K, Stanković B

机构信息

Faculty of Pharmacy, Institute of Analytical Chemistry, Belgrade, Yugoslavia.

出版信息

J Pharm Biomed Anal. 1990;8(8-12):705-9. doi: 10.1016/0731-7085(90)80107-z.

DOI:10.1016/0731-7085(90)80107-z

PMID:2100611

Abstract

The formation of a complex between palladium(II) chloride and pralidoxime chloride (PAM-2Cl) has been studied by means of potentiometric pH measurements. The real stability constant of the complex in aqeous medium of ionic strength 0.3 M (KCl) at 25.0 degrees C was log Ks = 7.29. This value was close to that (log Ks = 7.02) obtained previously by spectrophotometric methods after appropriate correction with respect to the corresponding value of the acidic constant of PAM-2Cl (pKca = 8.05), which was also determined under the same experimental conditions.

摘要

通过电位滴定法测量研究了氯化钯（II）与氯解磷定（PAM - 2Cl）之间配合物的形成。在25.0摄氏度、离子强度为0.3M（KCl）的水介质中，该配合物的实际稳定常数为log Ks = 7.29。此值与先前通过分光光度法获得的值（log Ks = 7.02）相近，该分光光度法的值是在对PAM - 2Cl的酸性常数（pKca = 8.05）的相应值进行适当校正后得到的，而PAM - 2Cl的酸性常数也是在相同实验条件下测定的。