ON A BARIUM RARE-EARTH OXOZINCATE-PLATINA TE(IV) - BA17YB16ZN8PT4O57

Authors
RABBOW C SFREDDO O MULLERBUSCHBAUM H
Citation
C. Rabbow et al., ON A BARIUM RARE-EARTH OXOZINCATE-PLATINA TE(IV) - BA17YB16ZN8PT4O57, Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 51(2), 1996, pp. 220-224
Citations number
25
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur Naturforschung. B, A journal of chemical sciences → ACNP
ISSN journal
09320776
Volume
51
Issue
2
Year of publication
1996
Pages
220 - 224
Database
ISI
SICI code
0932-0776(1996)51:2<220:OABROT>2.0.ZU;2-R
Abstract
Reactions of BaCO3, ZnO and Yb2O3 mixtures at temperatures up to 1300 degrees C using platinum crucibles led to yellow needles of Ba17Yb16Zn 8Pt4O57. The compound crystallizes with a hitherto unknown tetragonal crystal structure, space group C-4h(5)-I4/m, a = 22.731(1), c = 5.682( 1) Angstrom, Z = 2. The crystal structure is characterized by PtO6 oct ahedra and tetragonal ZnO5 pyramids. Yb3+ shows a mono-capped trigonal prismatic coordination and Ba2+ several different coordination enviro nments (C.N. = 9 to 10, by O2-). The relationship to the Ba(5)Ln(8)M(4 )O(21) type is discussed.