Crystal structures and comparisons of potassium rare-earth molybdates KRE(MoO(4))(2) (RE = Tb, Dy, Ho, Er, Yb, and Lu)

Six potassium rare-earth molybdates KRE(MoO(4))(2) (RE = Tb, Dy, Ho, Er, Yb, and Lu) were synthesized by flux-assisted growth in K(2)Mo(3)O(10). The crystal structures were determined using single-crystal X-ray diffraction data. The synthesized molybdates crystallize with the ortho­rhom­bic Pbcn spa...

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Detalles Bibliográficos
Autores principales: Chong, Saehwa, Perry, Samuel, Riley, Brian J., Nelson, Zayne J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2020
Materias:
Research Communications
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7784660/
https://www.ncbi.nlm.nih.gov/pubmed/33520272
http://dx.doi.org/10.1107/S205698902001542X
Descripción
Sumario:Six potassium rare-earth molybdates KRE(MoO(4))(2) (RE = Tb, Dy, Ho, Er, Yb, and Lu) were synthesized by flux-assisted growth in K(2)Mo(3)O(10). The crystal structures were determined using single-crystal X-ray diffraction data. The synthesized molybdates crystallize with the ortho­rhom­bic Pbcn space group (No. 60). Trendlines for unit-cell parameters were calculated using data from the current study. The unit-cell parameters a and c increase linearly whereas b decreases with larger RE cations, based on crystal radii. The unit-cell volumes increase linearly and the densities decrease linearly with larger RE cations. The average distances between the RE cations and the nearest O atoms increase with larger cations whereas the average distances of Mo—O and K—O do not show specific trends.

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