高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (8): 1173.

• 论文 • 上一篇    下一篇

二苯并18冠6及二苯并24冠8与六聚钼钨杂多酸超分子配合物的合成与晶体结构

鲁晓明1, 刘顺诚1, 金祥林2   

  1. 1. 首都师范大学化学系, 北京 100037;
    2. 北京大学物理化学研究所
  • 收稿日期:1995-08-02 出版日期:1996-08-24 发布日期:1996-08-24
  • 通讯作者: 鲁晓明,女,39岁,副教授.
  • 作者简介:鲁晓明,女,39岁,副教授.

The Synthesis and Crystal Structure of Crown Ether with Heterohexaoxometalate Supermolecular Complexes

LU Xiao-Ming1, LIU Shun-Cheng1, JIN Xiang-Lin2   

  1. 1. Department of Chemistry, Capital Normal University, Beijing 100037;
    2. Institute of physical Chemistry, Peking University
  • Received:1995-08-02 Online:1996-08-24 Published:1996-08-24

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被引次数

14

摘要： 报道了两种超分子配合物[Na(DB18C6)(CH3OH)]2W4Mo2O19·(DB18C6)·(CH3OH)(Ⅰ)和[Na(DB24C8)]2W1Mo5O19(Ⅱ)的合成方式,用元素分析、电子能谱、IR和1HNMR等手段进行了表征,并用X射线测定了晶体结构。结构分析表明:配合物(Ⅰ)属单斜晶系,空间群为P21/c,晶胞参数:α=1.8699(5)nm,b=1.9543(5)nm,c=2.2808(6)nm,β=112.87°,Z=4.冠醚与多酸根之间通过Na+在DB18C6空腔中的镶嵌和O-Na-O键的桥联结合在一起。超分子配合物(Ⅱ)则为Na+与DB24C8作用形成配位阳离子,然后与多酸阴离子静电吸引相结合。不同空腔孔径的冠醚与钼钨杂多酸配位时呈现出分子识别与选择性。

关键词: 冠醚, 多酸, 超分子配合物, 晶体结构

Abstract: Two new supermolecular complexes of[Na(DB18C6)(CH3OH)]:W4Mo2O19·(DB18C6)·(CH3OH)(1)and [Na(DB24C8)]2W1Mo5O19(Ⅱ)were synthesized, their structures were characterized by IR,1H NMRand elementary analysis,and also determined by fourcircle X-ray diffractometer.The parameters of crystal structure of complex(Ⅱ)are :space group P21/c,α=1.8699(5)nm,b=1.9543(5)nm,c=2.2808(6) nm,β=112.87°,Z=4.It was shown that the formation of the two complexes is in different ways: DB18C8 is linked to polyoxometalate anion through C-O-Na-O-M (M= Wor Mo)long distant bonds, but DB24C8 with Na+ combined with anion by electronic interaction,It was also found that the crown ether with different radii of cavity selected different heterohexaoxometalate in which the occupation of Wand Mo is different to coordinate.

Key words: Crown ether, Heterohexaoxometalate, Supermolecule, Crystal structure

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