Title of article :
Crystal structures and comparisons of potassium rare-earth molybdates KRE(MoO4)2 (RE = Tb, Dy, Ho, Er, Yb, and Lu)
Author/Authors :
Chong, Saehwa Pacific Northwest National Laboratory, USA , Perry, Samuel Department of Civil and Environmental Engineering and Earth Sciences - University, of Notre Dame, USA , Riley, Brian J. Department of Civil and Environmental Engineering and Earth Sciences - University, of Notre Dame, USA , Nelson, Zayne J. Pacific Northwest National Laboratory, USA
Abstract :
Six potassium rare-earth molybdates KRE(MoO4)2 (RE = Tb, Dy, Ho, Er, Yb, and Lu) were synthesized by flux-assisted growth in K2Mo3O10. 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.
Keywords :
rare-earth molybdate , lanthanide molybdate , single-crystal XRD
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
