Materials Data on Tb(NbSn)6 by Materials Project
Tb(NbSn)6 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Tb is bonded to eight Sn atoms to form distorted edge-sharing TbSn8 hexagonal bipyramids. There are two shorter (3.18 Å) and six longer (3.36 Å) Tb–Sn bond lengths. Nb is bonded in a 12-coordinate geometry to six Sn atoms. There are a spread of Nb–Sn bond distances ranging from 2.92–3.01 Å. There are three inequivalent Sn sites. In the first Sn site, Sn is bonded in a 6-coordinate geometry to six equivalent Nb atoms. In the second Sn site, Sn is bonded in a 12-coordinate geometry to three equivalent Tb and six equivalent Nb atoms. In the third Sn site, Sn is bonded in a 8-coordinate geometry to one Tb, six equivalent Nb, and one Sn atom. The Sn–Sn bond length is 3.25 Å.