Eu(α-NMA)_3(α-HNMA)Phen的晶体结构及光谱研究  

Crystal Structure and Spectra of Eu(α-NMA)_3(α-HNMA)Phen

作　　者：侯彦辉[1] 杜晨霞[1] 朱玉[1] 周稚仙[1] 

机构地区：[1]郑州大学化学系,郑州450052

出　　处：《化学学报》2003年第3期367-371,共5页Acta Chimica Sinica

基　　金：河南省自然科学基金 (No.0 1 1 1 0 30 4 0 0 )资助项目

摘　　要：Eu(α NMA) 3(α HNMA)Phen (NMA =萘甲酸根 ;HNMA =萘甲酸 ;Phen =1,10 邻菲咯啉 )配合物晶体属三斜晶系 ,P1- 空间群 ,晶胞参数a =1.2 40 1( 3)nm ,b =1.30 5 6( 3)nm ,c =1.65 0 0 ( 3)nm ,α =73.0 1( 3)° ,β =82 .44( 3)° ,γ =62 .0 7( 3)° ,V =2 2 5 72 ( 8)nm3,Z =2 ,Dc=1.496g/cm3,F( 0 0 0 ) =10 2 6,R =0 .0 5 17.该配合物是双核分子 ,两个Eu(Ⅲ )离子通过 4个α 萘甲酸根的羧基桥联 .中心离子分别与五个羧基桥氧原子、一个螯合配位羧基的 2个氧原子和一个邻菲咯啉的 2个N原子配位 ,形成九配位的扭曲三帽三棱柱体 .双核分子中萘环与邻菲咯啉平面之间存在着π π相互作用 ,有利于该配位构型的稳定 .荧光光谱测定结果显示 。The crystal of complex Eu(α-NMA) 3(α-HNMA)Phen (NMA=naphthoate; HNMA=naphthoic acid and phen=1,10-phenanthroline) belongs to triclinic, P1- space group, with cell parameters a=1 2401(3) nm, b=1 3056(3) nm, c=1 6500(3) nm, α=73 01(3)°, β=82 44(3)°, γ=62 07(3)°, V=2 2572(8) nm 3, Z=2,D c=1 496 g/cm 3, F(000)=1026, R=0.0517. The complex is a binuclear molecule with the four bridged carboxylate groups of the naphthoate bonded to the two europium ions. Each ion is linked to five oxygen atoms from the bridging carboxylates, two oxygen atoms from a chelating carboxylate group and two nitrogen atoms of a phenanthroline, forming a nine coordinated distorted tricapped trigonal prism. The intramolecular π-π interaction between naphthoate and phenanthroline planes may stabilize the coordination geometry. The result of fluorescence spectra indicates that the title complex has excellent luminescence properties.

关 键 词：Eu(α-NMA)3(α-HNMA)Phen Eu(Ⅲ)配合物 晶体结构 荧光光谱 铕(Ⅲ) 稀土发光材料 萘甲酸 邻菲咯啉 萘甲酸根 

分 类 号：O72[理学—晶体学]