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化学学报
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化学学报 ›› 1997, Vol. 55 ›› Issue (6): 553-561. 上一篇    下一篇

研究论文

QEu(TTA)~4.H~2O的晶体结构和荧光光谱

陈伯涛;张聿高;高凌;王明昭;金林培;蔡冠梁   

  1. 北京师范大学化学系.北京(100875);防化指挥工程学院分析中心
  • 发布日期:1997-06-15

Crystal structure and luminescence spectra of QEu(TTA)~4.H~2O

Chen Botao;Zhang Yugao;Gao Ling;Wang Mingzhao;Jin Linpei;Cai Guanliang   

  1. Beijing Normal Univ., Dept of Chem..Beijing(100875)
  • Published:1997-06-15

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合成了有机碘翁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-二苯基碘翁离子;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)ⅲ,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。

关键词: 荧光分光光度法, 晶体结构, 噻吩甲酰三氟丙酮, 碘, 翁离子, 络合物, 晶体结构测定, 晶体, 自由基聚合, 引发

The crystal structure of QEu(TTA)~4.H~2O [Q=3, 6-di(dimethylamine)- diphenyliodonium, TTA=thenoyltrifluoroacetonate] was determined. The crystal is monoclinic with space group P2~1/n, a=1.4206(6), b=2.761(1) , c=1.4658(3)nm, β=100.40(2)ⅲ, 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 C~1. Investigation of radical photopolymerization shows that some amount of title complex can increase the polymerization rate through oxiding ketyl radical.

Key words: FLUOROSPECTROPHOTOMETRY, CRYSTAL STRUCTURE, 2-THENOYL- TRIFLUORO-ACETONE, IODINE, COMPLEX COMPOUNDS, CRYSTAL STRUCTURE DETERMINATION, CRYSTALS, FREE REDICAL POLYMERIZATION, INITIATION

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