Materials Data on Tb(Ni2As)2 by Materials Project

TbNi4As2 crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Tb is bonded to twelve equivalent Ni and six equivalent As atoms to form distorted face-sharing TbNi12As6 octahedra. There are four shorter (3.18 Å) and eight longer (3.21 Å) Tb–Ni bond lengths. There are two shorter (2.90 Å) and four longer (2.92 Å) Tb–As bond lengths. Ni is bonded in a 3-coordinate geometry to three equivalent Tb and three equivalent As atoms. There are two shorter (2.40 Å) and one longer (2.41 Å) Ni–As bond lengths. As is bonded in a 9-coordinate geometry to three equivalent Tb and six equivalent Ni atoms.