2017.01

Ba₂VO₄Br

Robert Haberkorn^*, Jessica Bauer, Guido Kickelbick

IUCrData 2/2 (2017) x170219

Article first published online: 17 Feb 2017

DOI: 10.1107/S241431461700219X

Abstract

Single crystals of dibarium vanadate(V) bromide, Ba₂VO₄Br, were grown from a melt of Ba₃(VO₄)₂ and BaBr₂. Ba₂VO₄Br crystallizes in the space group Pbcm and is isotypic with the structure of chlorspodiosite, Ca₂PO₄Cl. Although the ionic radii in chlorspodiosite are different from those in dibarium vanadate bromide, the structures are very similar to one another. The V atom is coordinated by four O atoms, forming a slightly distorted tetra­hedron. The Ba atoms occupy two different sites and are coordinated by six O atoms and three or four Br atoms, depending on the site occupied.