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Chem. J. Chinese Universities ›› 1996, Vol. 17 ›› Issue (2): 179.

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183W NMR Characterization of Rare Earth Heterpolymetalates in Aqueous Solution

LIU Jing-Fu1, WANG Wei-Qing1, MENG Lu1, LIU Ya2   

  1. 1. Department of Chemistry, Northeast Normal University, Changchun 130024, Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Academia Sinica;
    2. Bethrcne Mediial Clniversity, Changrhun 130021
  • Received:1995-03-08 Online:1996-02-24 Published:1996-02-24

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Abstract: 183W NMRspectra were obtained for[La(AsW11O(39))2]11-, [La(As2W17O612 ]17-,[La (SiW9 Mo2O39)2 ]13-, [LaSb9W21O86]16-,[LaAs4W40O140]25- and α-,β-[(CeO )3·(SiW9O34)2]14- complexes.Tungsten NMRstudies showed that the Cs symmetry of the square antiprism for[La AsW11O39)2]11- and[La(As2W17O61)2]17-anions keep constant in aqueous solution; the lanthanide accupied the central S1 site in[LnSb9W21 O86]16- and [LnAs4W40O140]25- complexes,respectively,and lanthanide metal cations gave [(CeO)3·(SiW9O34)2]11- type of complexes with SiW9O3410-.

Key words: 183W NMR, Rare earth heteropolymetalate, Cryptate heteropolyanion

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