NaTb3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. Na(1) is bonded in a distorted body-centered cubic geometry to six equivalent Tb(2) and eight equivalent Tb(1) atoms. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a distorted body-centered cubic geometry to four equivalent Na(1) and four equivalent Tb(2) atoms. In the second Tb site, Tb(2) is bonded in a 14-coordinate geometry to six equivalent Na(1) and eight equivalent Tb(1) atoms.
NaTb3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. Na(1) is bonded in a distorted body-centered cubic geometry to six equivalent Tb(2) and eight equivalent Tb(1) atoms. All Na(1)-Tb(2) bond lengths are 3.99 Å. All Na(1)-Tb(1) bond lengths are 3.46 Å. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a distorted body-centered cubic geometry to four equivalent Na(1) and four equivalent Tb(2) atoms. All Tb(1)-Tb(2) bond lengths are 3.46 Å. In the second Tb site, Tb(2) is bonded in a 14-coordinate geometry to six equivalent Na(1) and eight equivalent Tb(1) atoms.