摘要
采用溶剂热法合成了一个配位聚合物{[Ln2(H2-DHBDC)3(H2O)4](H2O)2}n(H2-DHBDC=2,5-二羟基对苯二甲酸)。利用X-射线单晶衍射(SCXRD)、元素分析(EA)、红外光谱(FTIR)、热重分析(TG)和荧光分光光度法(FS)等对其结构和性质进行了分析与表征。结果表明:晶体属于单斜晶系,P-1空间群,晶胞参数a=1.0640(8)nm,b=1.1239(9)nm,c=1.5232(12)nm,α=99.351(11)°,β=99.511(11)°,γ=92.482(12)°,V=1768(2)nm3,Z=2。八个氧原子在铽离子周围形成一个变形的三角十二面体配位环境,金属离子通过与配体连接形成具有一定孔道的三维结构。荧光分析测试表明,配合物具有较好的荧光性。
A complex { [Ln2( H2-DHBDC)3( H2O)4]( H2O)2}n[H2-DHBDC = 2,5-dihydroxy terephthalic acid] of Lanthanide rare earth ions and 2,5-dihydroxy terephthalic acid organic ligand was synthesized by solvothermal method. The structure and properties of the complex were analyzed and characterized by single crystal X-ray diffraction( SCXRD),elemental analysis( EA),fourier transform infrared spectrum( FTIR), thermal gravimetric analysis( TG) and fluorescence spectrum( FS),respectively. The results show that the crystal structure belongs to triclinic,space group P-1 with a = 1.0640( 8) nm,b = 1. 1239( 9) nm,c = 1. 5232( 12) nm,α = 99. 351( 11) °,β = 99. 511( 11) °,γ =92. 482( 12) °,V = 1768( 2) nm3,and Z = 2. The Tb3 +is in geometry of distorted trigondodecahedron built by eight oxygen atoms. The adjacent metal ions are connected by the 2,5-dihydroxy terephthalic acid forming a kind of three-dimension channel structure. Luminescence measuremet shows that the complex has fluorescent property.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2015年第5期1421-1426,共6页
Journal of Synthetic Crystals
基金
陕西省科技攻关项目(2011K07-23)
陕西省教育厅专项科研计划项目(11JK0566)
西安工程大学博士基金(BS1010)
关键词
2
5-二羟基对苯二甲酸
铽配合物
晶体结构
荧光性质
2 5-dihydroxy terephthalic acid Tb(III) complex crystal structure fluorescent property