Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (1): 5.

• Articles • Previous Articles     Next Articles

Synthesis and Properties of α-Molybadotungstoniobic Diphosphates

OU Lun-Yu1, GONG Jian1, PENG Jun1, SUN Shao-Ren1, ZHANG Jian-Guo2   

  1. 1. Department of Chemistry, Northeast Normal University, Changchun, 130024;
    2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun
  • Received:1994-01-31 Revised:1994-06-03 Online:1995-01-24 Published:1995-01-24

Abstract: Four kinds of new molybdotungstoniobic diphosphates with the Dawson structure, formulated as α-P2W15Mo2NbO , are prepared and characterized by IR, UVspectra,polarography and 183WNMR which show that the same "polar" Watoms in the Dawson frames are substituted. The mean value of 183W chemical shifts of the "polar" group varies linearly with the number of substituted atoms in the opposite polar group.

Key words: Dawson structure, 183WNMR, Molybdotungstoniobic diphosphate

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