Materials Data on NdSm(MnGe)4 by Materials Project
SmNd(MnGe)4 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Sm is bonded in a 8-coordinate geometry to eight equivalent Ge atoms. All Sm–Ge bond lengths are 3.13 Å. Nd is bonded in a 8-coordinate geometry to eight equivalent Ge atoms. All Nd–Ge bond lengths are 3.13 Å. Mn is bonded to four Ge atoms to form a mixture of corner and edge-sharing MnGe4 tetrahedra. All Mn–Ge bond lengths are 2.43 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Nd, four equivalent Mn, and one Ge atom. The Ge–Ge bond length is 2.71 Å. In the second Ge site, Ge is bonded in a 9-coordinate geometry to four equivalent Sm, four equivalent Mn, and one Ge atom. The Ge–Ge bond length is 2.67 Å.