Crystal structure of a layered phosphate molybdate K2Gd(PO4)(MoO4)

Crystal structure of a layered phosphate molybdate K2Gd(PO4)(MoO4)

The title compound dipotassium gadolinium(III) phosphate(V) molybdate(VI), K2Gd(PO4)(MoO4), was synthesized from a high-temperature melt starting from GdF3 as a source of gadolinium. Its structure is isotypic with other MI2MIII(MVIO4)(PO4) compounds, where MI = Na, K or Cs, and MIII = rare-earth cat...

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Bibliographic Details
Main Authors: Valeriia Zozulia, Kateryna Terebilenko, Artem Voinalovych, Vadim Potaskalov, Mykola Slobodyanik
Format: Article
Language:English
Published: International Union of Crystallography 2024-02-01
Series:Acta Crystallographica Section E: Crystallographic Communications
Subjects:
crystal structure
molybdate
phosphate
gadolinium
triangular dodecahedron
Online Access:http://scripts.iucr.org/cgi-bin/paper?S2056989023011106
Description
Summary:The title compound dipotassium gadolinium(III) phosphate(V) molybdate(VI), K2Gd(PO4)(MoO4), was synthesized from a high-temperature melt starting from GdF3 as a source of gadolinium. Its structure is isotypic with other MI2MIII(MVIO4)(PO4) compounds, where MI = Na, K or Cs, and MIII = rare-earth cation, MVI = Mo or W. The three-dimensional framework is built up from [Gd(PO4)(MoO4)] anionic sheets, which are organized by adhesion of [GdPO4] layers and [MoO4] tetrahedra stacked above and below these layers. The interstitial space is occupied by K cations having eightfold oxygen coordination. The polyhedron of GdO8 was estimated to be a triangular dodecahedron by the continuous shape measurement method.
ISSN:2056-9890

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