Materials Data on Ho(CrGe)6 by Materials Project
Ho(CrGe)6 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Ho is bonded to eight Ge atoms to form distorted edge-sharing HoGe8 hexagonal bipyramids. There are two shorter (2.88 Å) and six longer (2.95 Å) Ho–Ge bond lengths. Cr is bonded in a 12-coordinate geometry to six Ge atoms. There are a spread of Cr–Ge bond distances ranging from 2.55–2.68 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 12-coordinate geometry to three equivalent Ho and six equivalent Cr atoms. In the second Ge site, Ge is bonded in a 6-coordinate geometry to six equivalent Cr atoms. In the third Ge site, Ge is bonded in a 8-coordinate geometry to one Ho, six equivalent Cr, and one Ge atom. The Ge–Ge bond length is 2.57 Å.