高等学校化学学报

高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (3): 221.

• 研究论文 •    下一篇

钨钼杂多酸及其盐与二甲基甲酰胺加合物的制备和性质研究

顾翼东, 丁建平   

  1. 复旦大学化学系
  • 收稿日期:1988-06-07 出版日期:1990-03-24 发布日期:1990-03-24
  • 通讯作者: 顾翼东

Syntheses and Properties of Adducts between Heteropoly Tungstic and Molybdic Acids and Their Salts and N,N-Dimethyl Formamide

Gu Yidong, Ding Jianping   

  1. Department of Chemistry, Fudan University, Shanghai
  • Received:1988-06-07 Online:1990-03-24 Published:1990-03-24

PDF (PC)

被引次数

9

摘要： 合成了10种钨钼杂多酸及其盐与DMF的加合物,用IR光谱、Raman光谱、UV光谱、1HNMR、TG-DTA和X射线衍射方法研究了加合物的性质。加合物中配体DMF以C=O键的氧作为配位原子,与杂多酸中的质子或杂多酸盐中的金属阳离子配合成键。IR光谱中νc-o的位移可作为配位键成键强度的判据。

关键词: 钨钼杂多酸, 钨钼杂多酸盐, 二甲基甲酰胺, 加合作用

Abstract: The adducts between heteropoly tungstic and molybdic acids and their salts and N, N-dimethyl formamide (DMF) were synthesized and characterized by IR, Raman, UV-VS, 1Hand 13C NMRspectrometry, TG-DTAthermal analysis and X-ray diffraction analysis. The IRand NMRspectra showed that the coordinating atom of DMFwas oxygen of C = Obond, and the shift of C = Ovibration frequency might be considered as the criterion of M-Obond strength. The organic ligands do not coordinate with heteropoly anions, but with protons in heteropoly acids by hydrogen-bond, or metal cations in heteropoly tungstates and molybdates by coordination bond. The X-ray diffraction analysis showed that the DMFadduct of CaPWis monoclinic, and its space group is C52k-P21/n, with unit cell parameters; a = 12. 927(7) Å, 6=33.850(9) Å, c=17. 903(13) Å, B=106.78(4), V=7500. 37 Å3.The figure of merit is F=M9(0. 016, 38).

Key words: Heteropoly tungstic and molybdic acid, Heteropoly tungstate and molybdate, N, N- Dimethyl formamide, Adduction

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