QEu(TTA)_4·H_2O的晶体结构和荧光光谱  

Crystal Structure and Luminescence Spectra of QEu(TTA)4·H_2O

作　　者：陈伯涛[1] 张聿高[1] 高凌[1] 王明昭[1] 金林培[1] 蔡冠梁[2] 

机构地区：[1]北京师范大学化学系,北京100875 [2]防化指挥工程学院分析中心,北京102205

出　　处：《化学学报》1997年第6期553-561,共9页Acta Chimica Sinica

基　　金：国家自然科学基金;国家攀登计划资助项目

摘　　要：合成了有机碘鎓离子作抗衡阳离子的标题配合物晶体QEu(TTA)_4·H_2O(Q=3,6-二甲氨基-二苯基碘鎓离子;TTA=噻吩甲酰三氟丙酮根),晶体属P2_1/n空间群,a=1.4206(6),b=2.761(1),c=1.4658(3)nm,β=100.40(2)°,Z=4,最终的R因子为0.079.77K下,配合物高分辨激光激发荧光光谱的测定表明,配合物中存在一种Eu(Ⅲ)格位.晶体结构测定结果确认,Eu(Ⅲ)离子格位的区域对称性为C_1.自由基聚合的引发实验结果表明,一定浓度的标题配合物对高分子聚合有促进作用.The crystal structure of QEu(TTA)4 ?H2O [Q = 3, 6 - di ( dimethylamine) -diphenyliodonium, TTA= thenoyltrifluoroacetonate] was determined. The crystal is monoclinicwith space group P21/n, a = 1.4206(6),β= 2. 761(1), c = 1.4658(3)nm,β= 100. 40(2)°,Z = 4, The final R is 0.079. The luminescence spectra of the title complex indicate one Eu(III) site in the complex. Combining the results of luminescence spectra with that of crystal determination, the local symmetry of Eu (III) site is C1. Investigation of radical photopolymerization shows that some amount of title complex can increase the polymerization rate through oxiding ketyl radical.

关 键 词：碘Weng离子 配合物 铕 晶体结构 荧光光谱 

分 类 号：O614.338[理学—无机化学]