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

Rodion V Panin; Nellie R Khasanova; Catherine Bougerol; Walter Schnelle; Gustaaf Van Tendeloo; Evgeny V Antipov

doi:10.1021/ic902187a

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

Inorg Chem. 2010 Feb 15;49(4):1295-7. doi: 10.1021/ic902187a.

Authors

Rodion V Panin¹, Nellie R Khasanova, Catherine Bougerol, Walter Schnelle, Gustaaf Van Tendeloo, Evgeny V Antipov

Affiliation

¹ Department of Chemistry, Moscow State University, Moscow 119991, Russia.

PMID: 20067297
DOI: 10.1021/ic902187a

Abstract

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.