氟苯甲酸-联吡啶混配双核铽配合物的合成、晶体结构与发光性质  

Synthesis,Crystal Structure and Luminescent Property of Complex [Tb(2-FC_(6)H_(4)COO)_(3)·C_(10)H_(8)N_(2)]_(2)

作　　者：李夏[1] 刘孟友[1] 强洪[1] 

机构地区：[1]首都师范大学化学系,北京100037

出　　处：《应用化学》2005年第12期1378-1380,共3页Chinese Journal of Applied Chemistry

基　　金：北京市教育委员会科技发展计划面上项目(KM200510028007);北京市留学人员科技活动择优市重点项目基金资助

摘　　要：Complex [Tb(2-FC6H4COO)3·C10H8N2]2 was synthesized from TbCl3·nH2O,2-fluorobenzoic acid,and 2,2′-bipyridine(C10H8N2).The crystals are monoclinic with space group P21/n,and the crystal parameters are:a=1.219 1（4） nm,b=1.777 4（6） nm,c=1.371 5（4） nm,β=111.400（5）,（M=）732.41,V=2.767（15） nm3,Z=4,Dcalc=1.758 g/cm3,T=293（2） K.The final R=0.030 2,（wR=）0.054 7.The two Tb3+ ions are linked together by four 2-fluorobenzoate groups in a bridging mode to form a dimeric unit.Each Tb3+ ion is also chelated by one 2-fluorobenzoate group and one 2,2′-bipy ligand,making a coordination number of eight.There are four emission peaks in the luminescence spectrum at 490,545,584,and 618 nm,corresponding to the transitions of the Tb3+ ion:5D4→7F6,5D4→7F5,5D4→7F4,and(5D4→)7F3,respectively.Complex [ Tb （ 2-FC6H4 COO） 3 · C10H8N2 ] 2 was synthesized from TbC13 · nH2 O, 2-fluorobenzoic acid, and 2,2＇-bipyridine（C10H8N2）. The crystals are monoclinic with space group P21/n, and the crystal parameters are：a =1.219 1（4） nm, b =1.777 4（6） nm, c =1.371 5（4） nm, β = 111.400（5）, M= 732.41, V=2.767（15） nm^3, Z=4, Dealc = 1.758 g/cm^3, T=293（2） K. The final R =0.030 2, wR = 0. 054 7. The two Tb^3＋ ions are linked together by four 2-fluorobenzoate groups in a bridging mode to form a dimeric unit. Each Tb^3＋ ion is also chelated by one 2-fluorobenzoate group and one 2,2＇-bipy ligand, making a coordination number of eight. There are four emission peaks in the luminescence spectrum at 490, 545, 584, and 618 nm, corresponding to the transitions of the Tb^3＋ ion：^5D4→^7F6, ^5D4→^7F5, ^5D4→^7F4, and ^5D4→^7F3 , respectively.

关 键 词：铽 氟苯甲酸 混合配体配合物 晶体结构 发光性质 

分 类 号：O631[理学—高分子化学]