Materials Data on Tb2AlCo2 by Materials Project

Tb2Co2Al crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Tb is bonded in a 10-coordinate geometry to six equivalent Co and four equivalent Al atoms. There are four shorter (2.91 Å) and two longer (2.93 Å) Tb–Co bond lengths. There are two shorter (3.21 Å) and two longer (3.24 Å) Tb–Al bond lengths. Co is bonded in a 9-coordinate geometry to six equivalent Tb, one Co, and two equivalent Al atoms. The Co–Co bond length is 2.44 Å. Both Co–Al bond lengths are 2.52 Å. Al is bonded to eight equivalent Tb and four equivalent Co atoms to form a mixture of distorted edge and face-sharing AlTb8Co4 cuboctahedra.