铕(Ⅲ)-3,4-甲基苯甲酸-邻菲咯啉配合物的合成和晶体结构

SYNTHESIS AND CRYSTAL STRUCTURE STRUCTURE OF EUROPIUM 3, 4-DIMETHYLBENZOATE COMPLEX WITH 1, 10-PHENANTHROLINE

合成了3，4－二甲基苯甲酸铕与邻菲咯啉的晶体配合物．用X射线衍射法测定了配合物的单晶结构，其组成为Eu2（3，4－DMBA）6（PHEN）2，（3，4－DMBA：3，4－二甲基苯甲酸根；PHEN：邻菲咯啉），属三斜晶系，PT空间群．晶胞参数：a＝1．2665（4）nm，b＝1．3567（4）nm，c＝1．0755（4）nm；α＝98．８７（3）°，β＝108．25（3）°，γ＝87．98（2）°．Mr＝1559．35，V＝1．7340（9）nm3，Z＝1，F000＝788．00，Dcak＝1．493g·cm-3，μ（MoKα）＝cm-1，λ（MoKα）＝0．071069nm．T＝293K．3，4－二甲基苯甲酸根和邻菲咯啉均以双齿配位．中心铕离子配位数为8．2个铕离子通过4个3，4－二甲基苯甲酸基桥联。

The coordination compound of europium 3, 4- dimethylbenzoate with 1, 10-phenanthroline are synthesized. The crystal structure of the title compound was determined by Xray diffraction. It crystallizes in the triclinic system with space group P1, a= 1.2666 (4) nm,b= 1.356 7 (4) nm, c= 1.075 5 (4)nm; α=98.87 (3)°, β= 10825 (3)°, γ=87.98 (2)°. Mr=1 559.55,V= 1.7340 (9) nm3, Z=1, T=293 K, F000 =788.00, Dcalc =1.493 g·cm3, μ(MoKα)= 18.53 cm-1,λ(MoKα)=0.071 069 nm. The europium atom is octa- coordinated with the bidentates of 3, 4-dimethylbenzoate and 1, 10- phenanthroline. The two europiuxn ions are bridged with the four carboxyl groups of the 3, 4- dimethylbenzoate forming a binuclear complex.