Ordering of Pd(2+) and Pd(4+) in the mixed-valent palladate KPd(2)O(3)

A new potassium palladate KPd(2)O(3) was synthesized by the reaction of KO(2) and PdO at elevated oxygen pressure. Its crystal structure was solved from powder X-ray diffraction data in the space group R3m (a = 6.0730(1) A, c = 18.7770(7) A, and Z = 6). KPd(2)O(3) represents a new structure type, co...

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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
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Sprache:eng
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Zusammenfassung:A new potassium palladate KPd(2)O(3) was synthesized by the reaction of KO(2) and PdO at elevated oxygen pressure. Its crystal structure was solved from powder X-ray diffraction data in the space group R3m (a = 6.0730(1) A, c = 18.7770(7) A, and Z = 6). KPd(2)O(3) represents a new structure type, consisting of an alternating sequence of K(+) and Pd(2)O(3)(-) layers with ordered Pd(2+) and Pd(4+) ions. The presence of palladium ions in di- and tetravalent low-spin states was confirmed by magnetic susceptibility measurements.
ISSN:1520-510X
DOI:10.1021/ic902187a