Materials Data on Sm3(Si3Pd10)2 by Materials Project

Abstract

Sm3(Pd10Si3)2 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a distorted tetrahedral geometry to four equivalent Pd atoms. All Sm–Pd bond lengths are 2.89 Å. In the second Sm site, Sm is bonded in a distorted cuboctahedral geometry to twelve equivalent Pd atoms. All Sm–Pd bond lengths are 3.03 Å. There are two inequivalent Pd sites. In the first Pd site, Pd is bonded to one Sm and three equivalent Si atoms to form a mixture of corner and edge-sharing PdSmSi3 tetrahedra. All Pd–Si bond lengths are 2.49 Å. In the second Pd site, Pd is bonded in a 2-coordinate geometry to one Sm and two equivalent Si atoms. Both Pd–Si bond lengths are 2.44 Å. Si is bonded in a 8-coordinate geometry to eight Pd atoms.