Materials Data on ScTc3 by Materials Project
ScTc3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Sc3+ is bonded in a distorted body-centered cubic geometry to fourteen Tc1- atoms. There are eight shorter (2.72 Å) and six longer (3.14 Å) Sc–Tc bond lengths. There are two inequivalent Tc1- sites. In the first Tc1- site, Tc1- is bonded to four equivalent Sc3+ and four equivalent Tc1- atoms to form a mixture of distorted corner, edge, and face-sharing TcSc4Tc4 tetrahedra. All Tc–Tc bond lengths are 2.72 Å. In the second Tc1- site, Tc1- is bonded in a 8-coordinate geometry to six equivalent Sc3+ and eight equivalent Tc1- atoms.
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