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Journal Article

Ag2Te2O7, a novel silver tellurate of weberite structure type

MPS-Authors
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Klein,  W.
Abteilung Jansen, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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

/persons/resource/persons280381

Peters,  E. M.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons280091

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

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Citation

Klein, W., Curda, J., Peters, E. M., & Jansen, M. (2006). Ag2Te2O7, a novel silver tellurate of weberite structure type. Zeitschrift für anorganische und allgemeine Chemie, 632(8-9), 1508-1513.


Cite as: https://hdl.handle.net/21.11116/0000-000E-FFCB-F
Abstract
Ag2Te2O7 has been synthesized by solid state reaction of Ag2O and TeO2
under elevated oxygen pressure. The compound is diamagnetic and
insulating, and decomposes at 560 degrees C in an Ar atmosphere into
oxygen, Ag2TeO3 and TeO2. Ag2Te2O7 crystallizes orthorhombic in space
group Imma with a = 7.266(2), b = 10.1430(9), c = 7.6021(17) angstrom,
V = 560.3(2) angstrom(3), Z = 4,410 independent reflections, R-1 = 4.65
%, wR(2) = 11.13 %. The crystal structure consists of a
three-dimensional framework of TeO6 octahedra which are linked by
common vertices. Voids of the framework accommodate silver atoms which
are coordinated by eight oxygen atoms. The structure derives from that
one of naturally occurring Weberite, Na(2)MgA1F(7). The relationship to
the pyrochlore structure type is discussed.