Synthesis, characterization, and magnetic properties of new Rh(III) compounds with the K{sub 4}CdCl{sub 6} structure-type: Sr{sub 3}MRhO{sub 6} (M = Sm, Eu, Tb, Dy, Ho, Er, and Yb)

Journal Article · Sat Aug 01 04:00:00 EDT 1998 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1998.7809· OSTI ID:653130

Layland, R C; Kirkland, S L; Loye, H.C. zur ^[1]

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1. Univ. of South Carolina, Columbia, SC (United States). Dept. of Chemistry and Biochemistry

The compounds Sr{sub 3}MRhO{sub 6} (M = Sm, Eu, Tb, Dy, Ho, Er, and Yb) have been synthesized and structurally characterized by Rietveld refinement of powder X-ray diffraction data in the space group R{bar 3}c; Z = 6. The lattice parameters for the series were found to be a = 9.78570(7) and c = 11.4811(1) {angstrom}, a = 9.7837(1) and c = 11.4421(2) {angstrom}, a = 9.7662(2) and c = 11.3812(4) {angstrom}, a = 9.7627(2) and c = 11.3451(2) {angstrom}, a = 9.7591(2) and c = 11.3159(2) {angstrom}, a = 9.7557(2) and c = 11.2919(3) {angstrom}, and a = 9.7390(2) and c = 11.2501(3) {angstrom}, for Sr{sub 3}SmRhO{sub 6}, Sr{sub 3}EuRhO{sub 6}, Sr{sub 3}TbRhO{sub 6}, Sr{sub 3}DyRhO{sub 6}, Sr{sub 3}HoRhO{sub 6}, Sr{sub 3}ErRhO{sub 6}, and Sr{sub 3}YbRhO{sub 6}, respectively. These compounds are isostructural with K{sub 4}CdCl{sub 6}. The structure consists of infinite one-dimensional chains of alternating face-shared RhO{sub 6} octahedra and MO{sub 6} trigonal prisms (M = Sm, Eu, Tb, Dy, Ho, Er, and Yb). The strontium cations are located in a distorted square antiprismatic environment. Magnetic susceptibility data for the compounds Sr{sub 3}MRhO{sub 6} (M = Tb, Dy, Ho, Er, and Yb) obey the Curie law, with the expected {mu}{sub eff} values consistent with an oxidation state of +3 for both Rh and M.

• Sponsoring Organization: National Science Foundation, Washington, DC (United States)
• OSTI ID: 653130
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 139; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTAL STRUCTURE
EXPERIMENTAL DATA
LATTICE PARAMETERS
MAGNETIC SUSCEPTIBILITY
OXIDES
RARE EARTHS
RHODIUM OXIDES
STRONTIUM OXIDES
SYNTHESIS
X-RAY DIFFRACTION