DOE OSTI2020
In2Te5 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of two In2Te5 sheets oriented in the (0, 0, 1) direction. there are two inequivalent In2+ sites. In the first In2+ site, In2+ is bonded to four Te+0.80- atoms to form a mixture of edge and corner-sharing InTe4 tetrahedra. There are a spread of In–Te bond distances ranging from 2.78–2.92 Å. In the second In2+ site, In2+ is bonded to four Te+0.80- atoms to form a mixture of edge and corner-sharing InTe4 tetrahedra. There are a spread of In–Te bond distances ranging from 2.78–2.93 Å. There are five inequivalent Te+0.80- sites. In the first Te+0.80- site, Te+0.80- is bonded in a rectangular see-saw-like geometry to four Te+0.80- atoms. There are a spread of Te–Te bond distances ranging from 2.99–3.15 Å. In the second Te+0.80- site, Te+0.80- is bonded in a 3-coordinate geometry to three In2+ atoms. In the third Te+0.80- site, Te+0.80- is bonded in a distorted single-bond geometry to one In2+ and two equivalent Te+0.80- atoms. In the fourth Te+0.80- site, Te+0.80- is bonded in a distorted single-bond geometry to one In2+ and two equivalent Te+0.80- atoms. In the fifth Te+0.80- site, Te+0.80- is bonded in a 3-coordinate geometry to three In2+ atoms.