Materials Data on HoFeRu by Materials Project
HoRuFe crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Ho is bonded in a 12-coordinate geometry to six equivalent Ru and six equivalent Fe atoms. There are four shorter (3.01 Å) and two longer (3.03 Å) Ho–Ru bond lengths. There are two shorter (2.96 Å) and four longer (3.10 Å) Ho–Fe bond lengths. Ru is bonded to six equivalent Ho, two equivalent Ru, and four equivalent Fe atoms to form distorted RuHo6Fe4Ru2 cuboctahedra that share corners with eight equivalent FeHo6Fe2Ru4 cuboctahedra, corners with ten equivalent RuHo6Fe4Ru2 cuboctahedra, edges with six equivalent RuHo6Fe4Ru2 cuboctahedra, faces with six equivalent RuHo6Fe4Ru2 cuboctahedra, and faces with twelve equivalent FeHo6Fe2Ru4 cuboctahedra. Both Ru–Ru bond lengths are 2.67 Å. All Ru–Fe bond lengths are 2.58 Å. Fe is bonded to six equivalent Ho, four equivalent Ru, and two equivalent Fe atoms to form FeHo6Fe2Ru4 cuboctahedra that share corners with eight equivalent RuHo6Fe4Ru2 cuboctahedra, corners with ten equivalent FeHo6Fe2Ru4 cuboctahedra, edges with six equivalent FeHo6Fe2Ru4 cuboctahedra, faces with six equivalent FeHo6Fe2Ru4 cuboctahedra, and faces with twelve equivalent RuHo6Fe4Ru2 cuboctahedra. Both Fe–Fe bond lengths are 2.54 Å.