Materials Data on Pr2CdSb4 by Materials Project
Pr2CdSb4 crystallizes in the tetragonal P-4m2 space group. The structure is three-dimensional. Pr3+ is bonded in a 8-coordinate geometry to eight Sb2- atoms. There are four shorter (3.27 Å) and four longer (3.38 Å) Pr–Sb bond lengths. Cd2+ is bonded to four equivalent Sb2- atoms to form corner-sharing CdSb4 tetrahedra. All Cd–Sb bond lengths are 2.89 Å. There are two inequivalent Sb2- sites. In the first Sb2- site, Sb2- is bonded in a 8-coordinate geometry to four equivalent Pr3+ and four equivalent Sb2- atoms. All Sb–Sb bond lengths are 3.11 Å. In the second Sb2- site, Sb2- is bonded to four equivalent Pr3+ and two equivalent Cd2+ atoms to form a mixture of distorted edge, face, and corner-sharing SbPr4Cd2 pentagonal pyramids.
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