Materials Data on HfFeGe by Materials Project
HfFeGe crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. Hf is bonded in a 11-coordinate geometry to six equivalent Fe and five Ge atoms. There are two shorter (2.91 Å) and four longer (3.01 Å) Hf–Fe bond lengths. There are four shorter (2.71 Å) and one longer (2.72 Å) Hf–Ge bond lengths. Fe is bonded in a 12-coordinate geometry to six equivalent Hf, two equivalent Fe, and four Ge atoms. Both Fe–Fe bond lengths are 2.71 Å. There are two shorter (2.43 Å) and two longer (2.54 Å) Fe–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a distorted q6 geometry to three equivalent Hf and six equivalent Fe atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to six equivalent Hf and three equivalent Fe atoms.