Structure and elementary properties of the new Ir hollandite Rb0.17IrO2

Schoop, L. M.; Krizan, J. W.; Gibson, Q. D.; Cava, R. J.

doi:10.1016/j.jssc.2013.10.001

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Structure and elementary properties of the new Ir hollandite Rb_0.17IrO₂

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Schoop, L. M.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Schoop, L. M., Krizan, J. W., Gibson, Q. D., & Cava, R. J. (2014). Structure and elementary properties of the new Ir hollandite Rb_0.17IrO₂. Journal of Solid State Chemistry, 209, 37-41. doi:10.1016/j.jssc.2013.10.001.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0015-1E08-E

Abstract

We report the synthesis and structural characterization of the new It holladite, Rb0.17IrO2. Rb0.17IrO2 crystallizes in the tetragonal hollandite structure. In contrast to the previously reported monoclinic Ir hollandite K0.25IrO2, we do not observe a difference in Ir-O bond lengths in Rb0.17IrO2 and thus find It in an average oxidation state of + 3.83. We also report and compare the electronic and magnetic properties of Rb0.17IrO2 and K0.25IrO2, finding that they are both metallic and Pauli paramagnets further supporting that the electrons are delocalized in the Ir 5d states. (C) 2013 Elsevier Inc. All rights reserved.