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Ein Beitrag zur Kristallchemie der Kobaltoxoniobate: CoNb2O6 mit Rutilstruktur

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About the crystal chemistry of oxocobaltates: CoNb2O6 with rutile structure

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  • Anorganische und Physikalische Chemie
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Monatshefte für Chemie / Chemical Monthly Aims and scope Submit manuscript

Abstract

CoNb2O6 can be prepared by reaction of stoichiometric amounts of CoO (thermical decomposition of cobaltoxalate) and Nb2O5 in argon-atmosphere up to 1,400 °C. The isolated red-brown single crystals have tetragonal symmetry (a=472.6;c=305.4 pm; space group P42/mnm-D 144h ). Electron probe micro-analysis of the single crystals verifies the composition Co0.33Nb0.67O2. Co2+ and Nb5+ occupy statistically the metal positions of the rutil-type structure. The differences between Co0.5Nb0.5O2 (CoNbO4≡AlNbO4-type) and Co0.38Nb0.67O2 (CoNb2O6) are discussed.

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Literatur

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Authors and Affiliations

  1. Institut für Anorganische Chemie, Christian-Albrechts-Universität Kiel, D-2300, Kiel, Bundesrepublik Deutschland

    Ulrich Lehmann & Hanskarl Müller-Buschbaum

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  1. Ulrich Lehmann
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  2. Hanskarl Müller-Buschbaum
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Lehmann, U., Müller-Buschbaum, H. Ein Beitrag zur Kristallchemie der Kobaltoxoniobate: CoNb2O6 mit Rutilstruktur. Monatshefte für Chemie 111, 1225–1227 (1980). https://doi.org/10.1007/BF00909680

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  • DOI: https://doi.org/10.1007/BF00909680

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