4-酰代双吡唑酮是一类非环四齿β-二酮螯合剂.我们合成了双-(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)乙二酮(H_2BPMPED,简化为 H_2A),研究了 H_2A 和邻菲咯啉(Phen)的氯仿溶液在 HNO_3介质中对 La~(3+)、pr~(3+)、Nd~(3+)和 Gd~(3+)的协同萃取.Ln_2O_3(Ln=La、Nd、Gd),Pr_6O_(11)均为光谱纯,用浓 HNO_3(GR)溶解.蒸发近干,溶于二次 4-Acylbipyrazolones are a class of acyclic tetradentate β-diketone chelating agents.We synthesized bis- (1’-phenyl-3’-methyl-5’-oxopyrazole- (H_2BPMPED, simplified as H_2A) was studied. The effects of H_2A and phenanthroline on the catalytic activity of La ~ (3 +), pr ~ (3 +), Nd ~ (Ln = La, Nd, Gd) and Pr_6O_ (11) were spectroscopically pure and dissolved with concentrated HNO_3 (GR)