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Synthesis, VKβ5β″ spectra, and magnetic properties of M4 ± x V6O16 ± x · nH2O (M = K, Rb, Cs) polyvanadates

  • Synthesis and Properties of Inorganic Compounds
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Abstract

Tetragonal polyvanadates M4 ± x V6O16 ± x · nH2O (M = K, Rb, Cs) have been synthesized under hydrothermal conditions. According to the VKβ5β″ spectra of the hydrates, vanadium atoms have an average valence state (the V5+ ⇄ V4+ charge-fluctuation frequency is higher than 10−15 s). After dehydration, the phases do not change their crystal system. The thermal properties of the compounds have been studied in air and under an inert atmosphere. K4.2V6O16.2 and Rb4,1V6O16.1 melt congruently at 720 and 690°C, respectively. Cs3.8V6O15.8 melts incongruently at 675°C. The magnetic susceptibility of all phases obeys the Curie-Weiss law in the range from 77 to 673 K.

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Authors and Affiliations

  1. Institute of Solid State Chemistry, Ural Division, Russian Academy of Sciences, Pervomaiskaya ul. 91, Yekaterinburg, 620219, Russia

    V. L. Volkov & N. V. Podval’naya

  2. Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Yekaterinburg, 620219, Russia

    V. M. Cherkashenko & S. N. Nemnonov

Authors
  1. V. L. Volkov
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  2. N. V. Podval’naya
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  3. V. M. Cherkashenko
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  4. S. N. Nemnonov
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Original Russian Text © V.L. Volkov, N.V. Podval’naya, V.M. Cherkashenko, S.N. Nemnonov, 2007, published in Zhurnal Neorganicheskoi Khimii, 2007, Vol. 52, No. 8, pp. 1272–1276.

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Volkov, V.L., Podval’naya, N.V., Cherkashenko, V.M. et al. Synthesis, VKβ5β″ spectra, and magnetic properties of M4 ± x V6O16 ± x · nH2O (M = K, Rb, Cs) polyvanadates. Russ. J. Inorg. Chem. 52, 1189–1193 (2007). https://doi.org/10.1134/S0036023607080050

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  • DOI: https://doi.org/10.1134/S0036023607080050

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