Single crystals of Ba0,5Bi0,9V8O16, have been prepared with CO2-LASER techniques. The compound crystallizes with tetragonal symmetry, space group C4h5- I4/m. a = 9.943(2). c = 2.893(2) Å. Z = 1 and belongs to the Hollandite family. The two different tunnel positions are occupied by Ba2+ and Bi2+. As a result of this Ba2+ shows a cuboctahedral and Bi3+ a square pyramidal BiO4+s2 coordination if the lone pair of bismuth is included.
Received: 1995-8-22
Published Online: 2014-6-2
Published in Print: 1996-7-1
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