Potassium barium bismuth oxide
First published: 30 June 2004
Monique Tillard, e-mail: [email protected]
Abstract
KBa4Bi3O crystallizes in the centrosymmetric tetragonal space group I4/mcm. In this compound, bismuth is present as two anionic species, i.e. Bi24− dumbbells [Bi—Bi 3.113 (3) Å] and isolated Bi3−. Atom Bi1 (Bi3−) lies inside a bicapped square antiprism (2 × K and 8 × Ba). Atom Bi2, which forms the Bi24− dumbbell, sits inside a bicapped distorted trigonal prism (2 × K and 6 × Ba). O atoms occupy tetrahedral voids between Ba atoms.
