Single-Crystal Synthesis and Structure Refinement of Na_0.44MnO₂

Abstract:

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.

• Periodical: Solid State Phenomena (Volume 170)
• Pages: 198-202
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.170.198
• Online since: April 2011
• Authors: Junji Akimoto, Hiroshi Hayakawa, Norihito Kijima, Junji Awaka, Fuji Funabiki
• Keywords: Crystal Growth, Single-Crystal X-Ray Diffraction, Sodium Manganese Oxide, Structure Refinement

References

[1] J. -P. Parant, R. Olazcuaga, M. Devalette, C. Fouassier, P. Hagenmuller, J. Solid State Chem. 3, 1 (1971).

DOI: 10.1016/0022-4596(71)90001-6

[2] M. M. Doeff, T. J. Richardson, L. Kepley, J. Electrochem. Soc. 143, 2507 (1996).

[3] F. Sauvage, L. Laffont, J. -M. Tarascon, E. Baudrin, Inorg. Chem. 46, 3289 (2007).

[4] J. Akimoto, J. Awaka, Y. Takahashi, N. Kijima, M. Tabuchi, A. Nakashima, H. Sakaebe, K. Tatsumi, Electrochem. Solid-State Lett. 8, A554 (2005).

DOI: 10.1149/1.2035750

[5] J. Awaka, J. Akimoto, H. Hayakawa, Y. Takahashi, N. Kijima, M. Tabuchi, H. Sakaebe, K. Tatsumi, J. Power Sources 174, 1218 (2007).

DOI: 10.1016/j.jpowsour.2007.06.042

[6] F. Funabiki, H. Hayakawa, N. Kijima, J. Akimoto, Electrochem. Solid-State Lett. 12 (2009) F35.

DOI: 10.1149/1.3212681

[7] W. G. Mumme, Acta Crystallogr. Sect. B 24, 1114 (1968).

[8] J. Akimoto, J. Awaka, N. Kijima, Y. Takahashi, Y. Maruta, K. Tokiwa, T. Watanabe, J. Solid State Chem. 179, 169 (2006).

DOI: 10.1016/j.jssc.2005.10.020