北京大学学报(自然科学版)

铒丝氨酸配合物的合成与结构研究

金庆日1,王晓青1,金天柱1,徐光宪1,施倪承2,马吉吉生2   

  1. 1北京大学稀土化学研究中心, 北京,100871;2中国地质大学,北京,100083
  • 收稿日期:1995-09-16 出版日期:1995-03-20 发布日期:1995-03-20

Studies on Synthesis and Crystal Structure of an Erbiun (III) Complex with Serine

JIN Qingri1, WANG Xiaoqing1, JIN Tianzhu1, XU Guangxian1, SHI Nicheng2, MA Zhesheng2   

  1. 1Research Centre of Rare Earth Chemistry, Peking University, Beijing, 100871; 2University of Geoscience, China, Beijing, 100083
  • Received:1995-09-16 Online:1995-03-20 Published:1995-03-20

摘要: 在水溶液中合成了标题配合物[Er2(Ser)3(HO)4(CLO4)6,并测定了红外光谱和单晶结构。晶体属P1-空间群。晶胞参数:a=1.1344(7)nm,b=1.1399(6)nm,c=1.0716(6)nm,α=97.99(4)°,β=105.48(4)°,γ=118.51(5)°,Z=1。该配合物为双核分子,诸丝氨酸均以桥式配位与两个Er3+离子相连,每个铒离子周围各有4个配位水分子,配位数为7,形成单帽三棱柱的配位多面体。

关键词: 铒配合物, 丝氨酸, 晶体结构

Abstract: The erbium complex with serine of the formula [Er2(Ser)3(H2O)4](ClO4)6 was synthesized in aqueous solution. Its crystal structure was determined by x-ray diffration method. The single crystals belong to triclinic, space group P-1with a=1.1344(7)nm, b=1.1399(6)nm, c=1.0716(6)nm, α=9799(4)°, β=105.48(4)°, γ=118.51(5)°, Z=1. The complex is a binuclear molecule, in which three carboxyl groups from three serine molecules bridge the two erbiumions. Each erbium ion is also coordinated by four oxygen atoms from water molecules,making the coordination polyhedron of a monocapped trigonal prism with the coordination number of 7.

Key words: erbium complex, serine, crystal structure

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