Ordering of Pd2+ and Pd4+ in the Mixed-Valent Palladate KPd2O3

Ordering of Pd2+ and Pd4+ in the Mixed-Valent Palladate KPd2O3

A new potassium palladate KPd2O3 was synthesized by the reaction of KO2 and PdO at elevated oxygen pressure. Its crystal structure was solved from powder X-ray diffraction data in the space group R3̅m (a = 6.0730(1) Å, c = 18.7770(7) Å, and Z = 6). KPd2O3 represents a new structure type, consisting...

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Veröffentlicht in:Inorganic chemistry 2010-02, Vol.49 (4), p.1295-1297
Hauptverfasser: Panin, Rodion V, Khasanova, Nellie R, Bougerol, Catherine, Schnelle, Walter, Van Tendeloo, Gustaaf, Antipov, Evgeny V
Format: Artikel
Sprache:eng
Schlagworte:
Condensed Matter
Materials Science
Physics
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Zusammenfassung:A new potassium palladate KPd2O3 was synthesized by the reaction of KO2 and PdO at elevated oxygen pressure. Its crystal structure was solved from powder X-ray diffraction data in the space group R3̅m (a = 6.0730(1) Å, c = 18.7770(7) Å, and Z = 6). KPd2O3 represents a new structure type, consisting of an alternating sequence of K+ and Pd2O3 − layers with ordered Pd2+ and Pd4+ ions. The presence of palladium ions in di- and tetravalent low-spin states was confirmed by magnetic susceptibility measurements.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic902187a