Materials Data on HoCoSn2 by Materials Project
HoCoSn2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Ho is bonded in a 10-coordinate geometry to four equivalent Co and six Sn atoms. There are two shorter (2.89 Å) and two longer (3.02 Å) Ho–Co bond lengths. There are four shorter (3.10 Å) and two longer (3.26 Å) Ho–Sn bond lengths. Co is bonded in a distorted body-centered cubic geometry to four equivalent Ho and four equivalent Sn atoms. There are two shorter (2.53 Å) and two longer (2.66 Å) Co–Sn bond lengths. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded to two equivalent Ho and two equivalent Sn atoms to form distorted corner-sharing SnHo2Sn2 tetrahedra. Both Sn–Sn bond lengths are 2.91 Å. In the second Sn site, Sn is bonded in a 8-coordinate geometry to four equivalent Ho and four equivalent Co atoms.