Synthesis, crystal structure determination, and physical properties of Ag5IO6

Kovalevskiy, A.; Jansen, M.

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Synthesis, crystal structure determination, and physical properties of Ag₅IO₆

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Kovalevskiy, A.
Abteilung Jansen, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Jansen, M.
Abteilung Jansen, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Kovalevskiy, A., & Jansen, M. (2006). Synthesis, crystal structure determination, and physical properties of Ag₅IO₆. Zeitschrift für anorganische und allgemeine Chemie, 632(4), 577-581.

Cite as: https://hdl.handle.net/21.11116/0000-000F-027F-1

Abstract

The silver iodate(VII), Ag5IO6, was obtained by reacting a
stoichiometric mixture of Ag2O and KIO3, at elevated oxygen pressure,
adding a small portion of distilled water. The synthesis was done at
673 K and 270 MPa of oxygen pressure. The crystal structure was solved
by direct methods based on single crystal diffraction data (R3c, Z = 6,
a = 5.9366(1), c = 32.1471(6) angstrom, 323 independent reflections,
R-1 = 2.31 %). According to conductivity measurements, Ag5IO6 is
semiconducting with a specific resistance of 0.08 Omega cm at 300 K.
The activation energy was determined as 7.4(1) meV in the temperature
range of 220 - 300 K, and 4.3(1) meV in the temperature range of 90 -
180 K. The optical band gap for Ag5IO6 is 1.4 eV. Ag5IO6 is diamagnetic
with a magnetic susceptibility of -4.4 x 10(-4) emu/mol.