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本文用分光光度法研究了对溴偶氮氯膦(CPA-pB)的离解作用,测定了其逐级离解常数,且与已报道的对硝基偶氮氯膦(CPA-pN),对氯偶氮氯膦(CPA-pC)的离解常数进行了比较,其结果与结构分析基本相符。本文还用分光光度法研究了CPA-pB与镧的溶液配合物,测定了该配合物的组成和稳定常数,并用古埃磁天平测定了该溶液配合物的磁化率。
In this paper, the dissociation of bromo-chlorophosphonazo (CPA-pB) was studied by spectrophotometry and the step-by-step dissociation constants were determined. The results were consistent with reported CPA-pN, The dissociation constants of chlorophosphonazo (CPA-pC) were compared and the results were in good agreement with the structural analysis. The complex of CPA-pB with lanthanum was also studied by spectrophotometry. The composition and the stability constant of the complex were determined. The magnetic susceptibility of the complex was determined by using the Gurley magnetic balance.