Materials Data on Ho5NiBi2 by Materials Project

Abstract

Ho5NiBi2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are four inequivalent Ho sites. In the first Ho site, Ho is bonded to one Ni and four equivalent Bi atoms to form a mixture of distorted corner, edge, and face-sharing HoNiBi4 trigonal bipyramids. The Ho–Ni bond length is 2.75 Å. There are two shorter (3.15 Å) and two longer (3.16 Å) Ho–Bi bond lengths. In the second Ho site, Ho is bonded in a 5-coordinate geometry to one Ni and four equivalent Bi atoms. The Ho–Ni bond length is 2.75 Å. There are two shorter (3.23 Å) and two longer (3.28 Å) Ho–Bi bond lengths. In the third Ho site, Ho is bonded to one Ni and four equivalent Bi atoms to form a mixture of distorted corner, edge, and face-sharing HoNiBi4 square pyramids. The Ho–Ni bond length is 2.99 Å. There are two shorter (3.12 Å) and two longer (3.14 Å) Ho–Bi bond lengths. In the fourth Ho site, Ho is bonded in a 4-coordinate geometry to two equivalent Ni and two equivalent Bi atoms. There are one shorter (2.77 Å) and one longer (2.83 Å) Ho–Ni bond lengths. There are one shorter (3.26 Å) and one longer (3.28 Å) Ho–Bi bond lengths. Ni is bonded to seven Ho atoms to form distorted edge-sharing NiHo7 pentagonal bipyramids. Bi is bonded in a 8-coordinate geometry to eight Ho atoms.