高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (6): 720.

• 论文 • 上一篇    下一篇

稀土硝酸盐与Cyclam离子缔合物的合成、性质及结构

杨汝栋, 阎兰, 王奇光, 刘建民, 张云   

  1. 兰州大学化学系, 兰州, 730000
  • 收稿日期:1991-07-30 出版日期:1992-06-24 发布日期:1992-06-24
  • 通讯作者: 杨汝栋
  • 基金资助:

    国家自然科学基金

Synthesis, Properties and Structure of the Ionic Association Complexes of Rare Earth Nitrates with Cyclam

YANG Ru-dong, YAN Lan, WANG Qi-guang, LIU Jian-min, ZHANG Yun   

  1. Department of Chemistry, Lanzhou University, Lanzhou, 730000
  • Received:1991-07-30 Online:1992-06-24 Published:1992-06-24

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摘要： 在弱酸性介质中,以硝酸稀土与Cyclam在甲醇-水溶液中反应合成了La-Tb、Y9种离子缔合物。通过元素分析和IR、1HNMR及DTA-TG研究,推测该类化合物的通式为;L+L2+0.7·[Ln(NO3)6]0.8[Ln(NO3)3·3H2O]0.2·nH2O(La,Ce:n=3;Pr-Tb,Y:n=2.5,L为Cyclam)。经单晶四圆衍射结构分析,确定了化合物的晶体结构,晶胞参数为:a=1.7000(1)nm,b=1.7000(1)nm,c=1.9862(4)nm,α=β=90°,γ=120°,R3空间群,Dc=1.703g/cm3,μ(Ka)=132.9cm-1。

关键词: Cyclam(1, 4, 8, 11-四氮杂环十四烷), 镧系元素, 稀土元素, 配合物

Abstract: The ionic association complexes of La-Tb and Yions with Cyclam were synthesized from the acidic medium of methanol aqueous solution.Through the investigation of elemental analysis, IR,1H NMR and DTA-TGwe propose that the complexes have a general formula L+L2+0.7[Ln(NO3)6]0.8[Ln(NO3)3·3H2O]0.2·nH2O(where Ln=La-Tb and Y; n=3 for La and Ce; n=2.5 for Pr-Tb and Y, L=Cyclam).The structure of L+L2+0.7[Nd(NO3)6]0.8[Nd(NO3)3·3H2O]0.2·2.5H2O was determined by single crystal X-ray diffraction analysis.The lattice parameter are as follows; space group R3, a=1.7000(1) nm, b=1.7000(1) nm, c=1.9862(4) nm, α=90°, β=90°, γ=120°, Dc=1.703 g/cm3,μ(Ka)= 132.9 cm-1.

Key words: Cyclam(1,4,8,11-tetraazacyclotetradecane), Lanthanide, Rare earth, Complex

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