Materials Data on Hf2Te by Materials Project

Abstract

Hf2Te crystallizes in the monoclinic C2/m space group. The structure is two-dimensional and consists of one Hf2Te sheet oriented in the (0, 0, 1) direction. there are four inequivalent Hf sites. In the first Hf site, Hf is bonded in a 2-coordinate geometry to two Te atoms. There are one shorter (3.13 Å) and one longer (3.16 Å) Hf–Te bond lengths. In the second Hf site, Hf is bonded to five Te atoms to form distorted edge-sharing HfTe5 trigonal bipyramids. All Hf–Te bond lengths are 2.92 Å. In the third Hf site, Hf is bonded in a 3-coordinate geometry to three Te atoms. There are two shorter (2.94 Å) and one longer (3.04 Å) Hf–Te bond lengths. In the fourth Hf site, Hf is bonded in a 2-coordinate geometry to two equivalent Te atoms. Both Hf–Te bond lengths are 2.95 Å. There are two inequivalent Te sites. In the first Te site, Te is bonded in a 6-coordinate geometry to six Hf atoms. In the second Te site, Te is bonded in a distorted hexagonal planar geometry to six Hf atoms.