醇-水体系中HPMBP萃取钬的机理及萃合物晶体结构

SYSTHESIS AND CRYSTAL STRUCTURE OF Ho(Ⅲ) COMPLEX OF 1-PHENYL-3-METHYL-4-BENZOYL-PYRAZOLONE-5(HPMBP)

本文报道研究了在醇－水混合体系中用ＨＰＭＢＰ－三氯甲烷萃取Ｈｏ３＋ 的机理。在萃取条件下，得到了固态萃合物Ｈｏ（ＰＭＢＰ）３·２Ｈ２Ｏ，并用Ｘ－射线衍射方法测定了固态萃合物的晶体结构。晶体属于单斜晶系，空间群Ｐ２１／ｎ， ａ＝ １．５０３５（４） ｎｍ ，ｂ＝ １．４７１０（２）ｎｍ ， ｃ＝ ２．４３９１（４）ｎｍ ， β＝ １０１．４０７（１）°， Ｚ＝ ４， Ｖ＝ ５．２８７７５ ｎｍ ３， Ｄｃａｌｃ＝ １．４１５ ｇ·ｃｍ － ３， μ（ＭｏＫα）＝ １５．６４ ｃｍ － １， Ｆ（０００）＝ ２２８８， Ｒ＝０．０７， ＲＷ＝ ０．１００。Ｈｏ

In this paper, the extraction mechanism of Ho 3+ from ROH H 2O mixed solutions by 1 phenyl 3 methyl 4 benzoyl pyazolone 5 in chloroform has been investigated. The solid extraction complex Ho(PMBP) 3 ·2H 2O has been prepared and characterized by X ray crystrallography and IR spectroscopic measurement. The crystal is monoclinic with space group P2 1/n , a =1.5035(4) nm, b = 1.4710(2)nm, c =2.4391(4)nm, β =101.407(1)°, Z=4, V =5.28775 nm 3, D calc =1.415 g/cm 3. Each holmium ion is coordinated by 8 oxygen atoms, contributed by three PMBP anions, and two H 2O molecules, arranged at the vertices of two square prisms with the same apical position and rotated 45° comparatively.$$$$