Sr{sub 4}PbPt{sub 4}O{sub 11}, the first platinum oxide containing Pt{sub 2}{sup 6+} ions
- Unite de Catalyse et de Chimie du Solide, equipe de Chimie du Solide (CNRS UMR 8181) ENSC Lille-UST Lille, BP 90108, 59652 Villeneuve d'Ascq cedex (France)
We report the synthesis and crystal structure of the new compound Sr{sub 4}PbPt{sub 4}O{sub 11}, containing platinum in highly unusual square pyramidal coordination. The crystals were obtained in molten lead oxide. The structure was solved by X-ray single crystal diffraction techniques on a twinned sample, the final R factors are R=0.0260 and wR=0.0262. The symmetry is triclinic, space group P1-bar , with a=5.6705(6)A, b=9.9852(5)A, c=10.0889(5)A, {alpha}=90.421(3){sup o}, {beta}=89.773(8){sup o}, {gamma}=90.140(9){sup o} and Z=2. The structure is built from dumbell-shaped Pt{sub 2}O{sub 9} entities formed by a dinuclear metal-metal bonded Pt{sub 2}{sup 6+} ion with asymmetric environments of the two Pt atoms, classical PtO{sub 4} square plane and unusual PtO{sub 5} square pyramid. Successive Pt{sub 2}O{sub 9} entities deduced from 90{sup o} rotations are connected through the oxygens of the PtO{sub 4} basal squares to form [Pt{sub 4}O{sub 10}{sup 8-}]{sub {approx}} columns further connected through Pb{sup 2+} and Sr{sup 2+} ions. Raman spectroscopy confirmed the peculiar platinum coordination environment.
- OSTI ID:
- 20905355
- Journal Information:
- Journal of Solid State Chemistry, Vol. 179, Issue 7; Other Information: DOI: 10.1016/j.jssc.2006.04.009; PII: S0022-4596(06)00202-7; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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