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Pr(Ⅳ)碱式碳酸盐能溶于一定pH值和浓度的丙二酸水溶液中,形成黄色丙二酸镨(Ⅳ)配合物。该配合物溶液在265nm附近有一特征宽带吸收峰。测得配合物组成比Pr(Ⅳ):CH_2(COO)~(2-)=1:2。Pr(Ⅳ)的自还原动力学研究表明为拟一级反应。
Pr (Ⅳ) basic carbonate can dissolve in a certain pH and concentration of malonic acid aqueous solution to form yellow (pv) praseodymium (Ⅳ) complex. The complex solution has a characteristic broadband absorption peak near 265nm. The complex ratio Pr (Ⅳ) was measured: CH_2 (COO) ~ (2 -) = 1: 2. The kinetic study of Pr (Ⅳ) self-reduction shows quasi-first-order reaction.