ISSN:
0044-2313
Keywords:
Lead, rare earth, aluminium, oxide
;
crystal structure
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Crystal Chemistry of the Lead Lanthanide Oxoaluminates. On Pb2HoAl3O8 and Pb2LuAl3O8.Single crystals of (I) Pb2HoAl3O8 and (II) Pb2LuAl3O8 were prepared by flux technique and investigated by X-ray methods. It crystallizes with cubic symmetry, space group Oh4-P42/n 3 2/m, (I): a = 9.4164(13) Å, (II): a = 9.3486(8) Å, Z = 4. The new structure type shows AlO4 tetrahedra, LnO8 hexagonal bipyramids and one sided coordinated Pb2+ within heterocubane units. The crystal chemical relationships to other lead oxides containing heterocubane Pb4O4 units are discussed.
Notes:
Mit Schmelzmitteltechnik wurden Einkristalle von (I) Pb2HoAl3O8 und (II) Pb2LuAl3O8 dargestellt. Die röntgenographische Untersuchung führte zu kubischer Symmetrie, Raumgruppe Oh4-P42/n 3 2/m, Zellabmessungen (I): a = 9,4164(13) Å, (II): a = 9,3486(8) Å, Z = 4. Der neue Strukturtyp zeigt AlO4-Tetraeder, hexagonale LnO8-Bipyramiden und einseitig koordinierte Pb2+-Ionen in Heterokubaneinheiten. Die kristallchemischen Beziehungen zu anderen Oxiden des Bleis mit Pb4O4-Baugruppen werden diskutiert.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19936191022
