Home Synthese und Kristallstruktur eines Barium-Zink-Vanadyl-phosphats BaZn(VO)(PO4)2 mit [(VO)PO4]-Schichten / Synthesis and Crystal Structure of a Barium-Zinc-Vanadyl-Phosphate BaZn(VO)(PO4)2 Containing [(VO)PO4] Layers
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Synthese und Kristallstruktur eines Barium-Zink-Vanadyl-phosphats BaZn(VO)(PO4)2 mit [(VO)PO4]-Schichten / Synthesis and Crystal Structure of a Barium-Zinc-Vanadyl-Phosphate BaZn(VO)(PO4)2 Containing [(VO)PO4] Layers

  • S. Meyer and Hk. Müller-Buschbaum
Published/Copyright: June 2, 2014
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Abstract

Single crystals of BaZn (VO)(PO4)2 have been prepared by solid state reactions of prereacted BaCO3 and P2O5 mixtures with ZnO, V2O3 and V2O5 in evacuated quartz tubes. X-ray investigations led to orthorhombic symmetry, space group D2h15 -Pbca, a = 8.814(1), b = 9.039(1), c = 18.538(1) A, Z = 8 . The crystal structure is characterized by layers of PO4 tetrahedra and square VO1+5 pyramids, connected by corrugated layers of PO4 and ZnO4 tetrahedra. The resulting tunnel structure is filled by Ba2+ ions. The short distance of the V4+ center to the apical oxygen atom of the square VO5 pyramids is a typical feature of vanadyl groups.

Received: 1996-11-20
Published Online: 2014-6-2
Published in Print: 1997-3-1

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