Materials Data on PmTa3 by Materials Project
PmTa3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pm is bonded in a distorted body-centered cubic geometry to fourteen Ta atoms. There are eight shorter (3.00 Å) and six longer (3.46 Å) Pm–Ta bond lengths. There are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a 8-coordinate geometry to four equivalent Pm and four equivalent Ta atoms. All Ta–Ta bond lengths are 3.00 Å. In the second Ta site, Ta is bonded in a 8-coordinate geometry to six equivalent Pm and eight equivalent Ta atoms.
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