Acta Cryst. (2008). E64, i28  [ doi:10.1107/S1600536808010386 ]

Dipraseodymium(III) pyroborate molybdate(VI), Pr₂(B₂O₅)(MoO₄)

P. Held and P. Becker

Abstract: Single crystals of triclinic Pr₂(B₂O₅)(MoO₄) were prepared from an incongruently melting flux in the system Pr₂O₃-MoO₃-B₂O₃ in a platinum crucible in an atmosphere of air. In the crystal structure, distorted edge-sharing [PrO₈] square antiprisms form a three-dimensional framework. These are further linked by isolated [MoO₄] tetrahedra and isolated pyroborate groups [B₂O₅], the latter consisting of two independent trigonal [BO₃] groups sharing one O atom. The [MoO₄] tetrahedra and the [B₂O₅] groups are arranged in alternating layers parallel to the ab plane.

Online 3 May 2008

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