Title of article
Crystal structures and comparisons of huntite aluminum borates REAl3(BO3)4 (RE = Tb, Dy and Ho)
Author/Authors
Chong, Saehwa Pacific Northwest National Laboratory, USA , Riley, Brian J. Pacific Northwest National Laboratory, USA , Nelson, Zayne J. Pacific Northwest National Laboratory, USA , Perry, Samuel N. Department of Civil and Environmental Engineering and Earth Sciences - University of Notre Dame, USA
Pages
11
From page
1
To page
11
Abstract
Three huntite-type aluminoborates of stoichiometry REAl3(BO3)4 (RE = Tb, Dy and Ho), namely, terbium/dysprosium/holmium trialuminium tetrakis(borate), were synthesized by slow cooling within a K2Mo3O10 flux with spontaneous crystallization. The crystal structures were determined using single-crystal X-ray diffraction (SC-XRD) data. The synthesized borates are isostructural to the huntite [CaMg3(CO3)4] structure and crystallized within the trigonal R32 space group. The structural parameters were compared to literature data of other huntite REAl3(BO3)4 crystals within the R32 space group. All three borates fit well into the trends calculated from the literature data. The unit-cell parameters and volumes increase linearly with larger RE cations whereas the densities decrease. All of the crystals studied were refined as inversion twins.
Keywords
huntite borate , lanthanide aluminum borate , single-crystal XRD
Journal title
Acta Crystallographica Section E: Crystallographic Communications
Serial Year
2020
Record number
2624347
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