BPMOPP与1，10－菲咯啉对铈的协同萃取

Synergistic Extraction of Cerium by BPMOPP and 1,10-Phenanthroline

研究了１，２－双（１＇－苯基－３＇－甲基－５＇－氧代吡唑－４＇－基）－１，２－苯二酮（Ｈ＿２Ａ）对盐酸介质中的萃取变价行为及与１，１０菲咯啉（Ｐｈｅｎ）从盐酸及盐酸与甲酸钠缓冲溶液中对的协同萃取行为。斜率法测定协萃合物的组成为ＣｅＡ·ＨＡ·Ｐｈｅｎ，求得了协萃平衡常数，萃取法制得了固态配合物，对其组成、ＵＶ、ＩＲ、￣１ＨＮＭＲ、ＴＧ－ＤＴＡ进行了研究，讨论了协萃机理及萃合物的可能结构。

A novel acyclic β-diketone type quadridentate chelating agent,bis-(1'- phenyl-3'-methyl-5' oxopyrazol-4'- yl)phthaldione(BPMOPP,H2A) was synthesized from 1-phenyl-3-methylpyrazolone and o-phthalyl chloride. The valency behaviour of cerium ion and thesynergistic extraction of cerium by BPMOPP and 1, 10-phenathroline from aqueous hy-drochloric acid or hydrochloric acid and sodium formate buffer solution have been investigat-ed. By using the slope analysis method the solid mixed-ligand synergic adduct showed a con-stitution of CeA· HA· phen with an extraction equilibrium constant ks,e=1. 21×10-2. Allthe compounds obtained have been characterized by elemental analvsis, UV, IR,1H NMR,and TG-DTA measurements. The molar conductivity of the complexes in chloroform was0.1～0. 2S·cm2/mol indicating that they are nonelectrolytes.