Ho(Ni2As)2 crystallizes in the tetragonal P4_2/mnm space group. Ho(1) is bonded to six equivalent As(1) atoms to form a mixture of distorted edge and corner-sharing HoAs6 octahedra. The corner-sharing octahedral tilt angles are 40°. Ni(1) is bonded in a 3-coordinate geometry to three equivalent As(1) atoms. As(1) is bonded in a 9-coordinate geometry to three equivalent Ho(1) and six equivalent Ni(1) atoms.
Ho(Ni2As)2 crystallizes in the tetragonal P4_2/mnm space group. Ho(1) is bonded to six equivalent As(1) atoms to form a mixture of distorted edge and corner-sharing HoAs6 octahedra. The corner-sharing octahedral tilt angles are 40°. There are two shorter (2.86 Å) and four longer (2.90 Å) Ho(1)-As(1) bond lengths. Ni(1) is bonded in a 3-coordinate geometry to three equivalent As(1) atoms. There are two shorter (2.37 Å) and one longer (2.39 Å) Ni(1)-As(1) bond length. As(1) is bonded in a 9-coordinate geometry to three equivalent Ho(1) and six equivalent Ni(1) atoms.