
Zeitschrift fur Anorganische und Allgemeine Chemie p. 2697 - 2700 (2002)
Update date:2022-08-11
Topics:
Sofin, Mikhail
Peters, Eva Maria
Jansen, Martin
Rb2Co2O3 was prepared via the azide/nitrate route. Mixtures of the precursors Co3O4, RbN3 and RbNO3 in the molar ratios 6:17:1 were heated in a special regime up to 450°C and annealed at this temperature for 50 h in silver crucibles. Single crystals have been grown by subsequent annealing of prepared powder at 450°C for 500 h in silver crucibles, which were sealed in glass ampoules under dried Ar. According to the X-ray analysis of the crystal structure (Pnma, Z = 8, 11.729(2), 6.058 (1), 8.004(1) A) cobalt is trigonal planar coordinated by oxygen atoms. The CoO3-units share through all corners and build up an infinite two-dimensional ∞2Co2O3-network.
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