Hf(Ni2As)2 crystallizes in the tetragonal P4_2/mnm space group. Hf(1) is bonded to twelve equivalent Ni(1) and six equivalent As(1) atoms to form distorted face-sharing HfNi12As6 octahedra. Ni(1) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Hf(1) and three equivalent As(1) atoms. As(1) is bonded in a 9-coordinate geometry to three equivalent Hf(1) and six equivalent Ni(1) atoms.
Hf(Ni2As)2 crystallizes in the tetragonal P4_2/mnm space group. Hf(1) is bonded to twelve equivalent Ni(1) and six equivalent As(1) atoms to form distorted face-sharing HfNi12As6 octahedra. There are four shorter (3.06 Å) and eight longer (3.10 Å) Hf(1)-Ni(1) bond lengths. There are two shorter (2.80 Å) and four longer (2.83 Å) Hf(1)-As(1) bond lengths. Ni(1) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Hf(1) and three equivalent As(1) atoms. There is one shorter (2.32 Å) and two longer (2.34 Å) Ni(1)-As(1) bond lengths. As(1) is bonded in a 9-coordinate geometry to three equivalent Hf(1) and six equivalent Ni(1) atoms.