Single-Crystal Synthesis and Structure Refinement of Na0.44MnO2
Single crystals of Na0.44MnO2 (=Na4Mn9O18) have been synthesized by a flux method at 1173 K for the first time. The crystal structure of Na0.44MnO2 has been refined by single-crystal X-ray diffraction method. The framework structure consists of double and triple rutile-type chains of edge-sharing MnO6 octahedra and a single chain of edge-sharing MnO5. The Mn-O bond distance and bond valence analyses revealed the manganese valence Mn3+/Mn4+ ordering in the Na0.44MnO2 structure.
J.-L. Bobet, B. Chevalier and D. Fruchart
J. Akimoto et al., "Single-Crystal Synthesis and Structure Refinement of Na0.44MnO2", Solid State Phenomena, Vol. 170, pp. 198-202, 2011