高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (3): 295.

• 论文 • 上一篇    下一篇

轻稀土B-15-C-5联吡啶三元配合物

杨瑞娜1, 朱文祥1, 赵继周1, 罗保生2, 谌了容2   

  1. 1. 北京师范大学化学系, 100875;
    2. 武汉大学分析测试中心
  • 收稿日期:1989-06-26 出版日期:1991-03-24 发布日期:1991-03-24
  • 通讯作者: 朱文祥

Ternary Complexes of Light Rare Earths with B-15-C-5 and Bipyridyl

Yang Rui-na1, Zhu Wen-xiang1, Zhao Ji-zhou1, Luo Bao-sheng2, Chen Liao-rong2   

  1. 1. Department of Chemistry, Beijing Normal University, Beijing, 100875;
    2. Analysis and Testing Centre, Wuhan University, Wulian
  • Received:1989-06-26 Online:1991-03-24 Published:1991-03-24

摘要: 合成了稀土(Ln=La-Eu)硝酸盐与苯并-15-冠-5和2,2'-联吡啶的三元配合物,并培养出La-配合物的单晶,测定了的分子结构和晶体结构。经元素分析确定其化学组成为Ln(NO3)3·bipy·2H2O·B-15-C-5。晶体属单斜晶系,空间群为P21/n。晶胞参数:a=11.951(6)Å,b=18.181(7)Å,c=14.754(5)Å;β=96.19(3)°;V=3187.0Å,Z=4,Dc=1.637g/cm3。最后偏离因子R=0.035。

关键词: 稀土, B-15-C-5, 联吡啶, 三元配合物, 晶体结构

Abstract: Six ternary complexes of rare earth (Ⅲ) nitrate (Ln=La-Eu) with benzo-l5-crown-5 and 2,2'-bipyridyl were prepared. They have the general formula of Ln(NO3)3·bipy·2H2O·B-15-C-5. Their physico-chemical properties have also been studied with conductance, thermal analysis and 1Rspectrometry.The crystal structure of La(NO3)3·bipy·2H2O·B-15-C-5 was determined. The crystal is monoclinic, with space group P21/n. α=11. 951 (6)Å, 6=18. 181(7)Å. c=14. 754(5)Å; β=96. 19(3)°, V=3187. 0Å3, Z=4, Dc=1. 637 g/cm3. The final Ris 0. 035. In the title complex, two nitrogen atoms (from bipy) and eight oxygen atoms(six from nitrate anions and two from water molecules) coordinate to central ion La(Ⅲ) forming an irregular coordination polyhedron. The B-15-C-5 molecule is bound to a water molecule through hydrogen bonding.

Key words: Rare earth, B-15-C-5, Bipyridyl, Ternary complex, Crystal structure

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