Bi{sub 2/3}Ce{sub 1/3}Rh{sub 2}O{sub 5}: A new mixed-valent Rh oxide with hitherto unknown structure

Journal Article · Tue Jan 15 04:00:00 EST 2008 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2007.11.001· OSTI ID:21043860

Mizoguchi, Hiroshi ^[1]; Ramirez, A P ^[2]; Zakharov, L N; Sleight, A W ^[1]

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1. Department of Chemistry, and OSUMI, Oregon State University, Corvallis, OR 97331-4003 (United States)
2. Bell Laboratories, Alcatel-Lucent, 600 Mountain Avenue, Murray Hill, NJ 07974 (United States)

The new compound Bi{sub 2/3}Ce{sub 1/3}Rh{sub 2}O{sub 5} has been discovered. It is currently the only known compound in the Bi-Ce-Rh-O system, and it crystallizes in a previously unknown structure type. The structure was established from single crystal X-ray diffraction data. Interatomic distances indicate the oxidation states as Bi{sub 2/3}{sup 3+}Ce{sub 1/3}{sup 4+}Rh{sub 2}{sup 3.33+}O{sub 5}. The structure indicates no ordering between Rh{sup 3+} and Rh{sup 4+}. The lack of charge ordering is consistent with the metallic properties determined from electrical conductivity, Seebeck coefficient, and magnetic susceptibility measurements. - Graphical abstract: The new compound Bi{sub 2/3}Ce{sub 1/3}Rh{sub 2}O{sub 5} has been discovered. The structure indicates no ordering between Rh{sup 3+} and Rh{sup 4+}. The lack of charge ordering is consistent with the metallic properties determined from electrical conductivity, Seebeck coefficient, and magnetic susceptibility measurements.

• OSTI ID: 21043860
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 181; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
INTERATOMIC DISTANCES
MAGNETIC SUSCEPTIBILITY
MONOCRYSTALS
RHODIUM IONS
RHODIUM OXIDES
VALENCE
X-RAY DIFFRACTION