高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (10): 1504.

• 论文 • 上一篇    下一篇

镧系四元混配化合物[Ln(BA)2(NO3)(phen)]2的合成、晶体结构和波谱研究

咸春颖, 朱龙观, 俞庆森   

  1. 浙江大学化学系, 杭州 310027
  • 收稿日期:1999-01-23 出版日期:1999-10-24 发布日期:1999-10-24
  • 通讯作者: 咸春颖,女,27岁,博士研究生.
  • 作者简介:咸春颖,女,27岁,博士研究生.
  • 基金资助:

    国家自然科学基金(批准号:9633020)资助课题

Syntheses, Crystal Structure and Spectra of Mixed Ligand Complex of Lanthanide [Ln(BA)2(NO3)(phen)]2

XIAN Chun-Ying, ZHU Long-Guan, YU Qing-Sen   

  1. Department of Chemistry, Zhejiang University, Hangzhou 310027, China
  • Received:1999-01-23 Online:1999-10-24 Published:1999-10-24

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摘要： 在酸性介质、含水溶剂中合成了四元混配化合物[Ln(BA)2(NO3)(phen)]2(BA=苯甲酸根;Ln=La,Ce,Pr,Nd,Sm,Eu,Dy,Gd,Tb,Er),用元素分析、IR、DTA-TG等方法对配合物进行了表征.研究了配合物的顺磁性能和荧光性能.镨配合物的单晶衍射结果表明,配合物属三斜晶系,双核,Pr3+的配位数为9,4个BA呈二种配位方式,丰富了四元配合物的结构表现形式.

关键词: 稀土, 混配化合物, 波谱, 晶体结构

Abstract: New mixed-ligand complexes of lanthanides [Ln(BA)2(NO3)(phen)]2(BA=ben-zoate, phen=1,10-phenanthroline) have been synthesized in aqueous solution of slight acidity and characterized by elementary analysis, IR and DTA-TG. Their ESR and fluorescence spectra were studied. The result of the crystal structure of Pr-complex shows that the complex is triclinic, space group P1, a=1.1007(8)nm, b=1.1177(3)nm, c=1.0687(4)nm, α=98.10(3)°, β=110.62(4)°, γ=84.80(4)°, Z=1, V=1.217(1) nm3, Dc=1.706 g/cm3, F(000)=620.00, μ(MoKα)=20.47cm-1. The crystaLIs consisted of a binuclear molecule. The coordination number of Pr3+is nine. The four BA ligands have two coordination modes: bidentate bridging and tridentate bridging.

Key words: Rare earth, Mixed-ligand complex, Spectra, Crystal structure

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