• Synthesis and characterization of a reduced heteropoly-tungstovanadate: (NH4)7[VvO4W10IVV2IVO36].ca. 22H2O

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    • Keywords


      Heteropolytungstovanadate; crystal structure; Keggin type anion; reduction; spectral characterization

    • Abstract


      The compound (NH4)7[ VvO4W10VIV2VIO36]·ca.22H2O (1) has been synthesized from an aqueous ammonium acetate buffer (pH 4) containing sodium vanadate, sodium rungstate_and sodium dithionite. Compound (1) crystallizes in a cubic space groupFm — 3, witha = 22.2001(6) Å and Z = 8. The anion [VvO4W10VIV2IVO36]7- is a typical Keggin type structure with VVO4 as the central tetrahedron. (1) has further been characterized by elemental analyses, redox titration, IR, EPR, and electronic spectroscopy and room temperature magnetic moment measurement.

    • Author Affiliations


      Vaddypally Shivaiah1 Samar K Das1

      1. School of Chemistry, University of Hyderabad, Hyderabad - 500 046, India
    • Dates

  • Journal of Chemical Sciences | News

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