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Eine neue darstellungsmethode für monoklines silber(I,III)oxid (AgO), einkristallzüchtung und röntgenstrukturanalyse

Authors
Journal
Journal of the Less Common Metals
0022-5088
Publisher
Elsevier
Publication Date
Volume
137
Identifiers
DOI: 10.1016/0022-5088(88)90080-x
Disciplines
  • Chemistry
  • Earth Science

Abstract

Abstract A new route for the synthesis of monoclinic AgO has been developed, yielding, for the first time, coarse crystalline samples which apparently do not show deviations from the ideal composition. On electrolysis of aqueous AgF solutions, ( c Ag+ = 0.03 M, platinum electrodes, 0.65–0.70 V, current density of 100–200 A m −2, 96 °C) AgO forms at the anode as crystals of 1.0 × 0.2 × 0.05 mm in size. The crystal structure has been refined using single-crystal diffractometer data ( P2 1/c; a = 5.8592(19), b = 3.4842(10), c = 5.4995(13) A ̊ , β = 107.506(24)°; Z = 4; 739 independent reflections, R = 0.04) and confirmed to have the empirical formula Ag +Ag 3+O 2. The thermal stability recorded by differential thermal and thermogravimetric analysis techniques is improved over samples prepared previously by chemical oxidation.

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