Ho2Ni2Al crystallizes in the orthorhombic Immm space group. Ho(1) is bonded in a 6-coordinate geometry to six equivalent Ni(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Ho(1), one Ni(1), and two equivalent Al(1) atoms. Al(1) is bonded to four equivalent Ni(1) atoms to form distorted edge-sharing AlNi4 cuboctahedra.
Ho2Ni2Al crystallizes in the orthorhombic Immm space group. Ho(1) is bonded in a 6-coordinate geometry to six equivalent Ni(1) atoms. There are two shorter (2.83 Å) and four longer (2.94 Å) Ho(1)-Ni(1) bond lengths. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Ho(1), one Ni(1), and two equivalent Al(1) atoms. The Ni(1)-Ni(1) bond length is 2.49 Å. Both Ni(1)-Al(1) bond lengths are 2.52 Å. Al(1) is bonded to four equivalent Ni(1) atoms to form distorted edge-sharing AlNi4 cuboctahedra.