Materials Data on Tl3AgTe2 by Materials Project
AgTl3Te2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ag1+ is bonded in a 7-coordinate geometry to four Tl1+ and four Te2- atoms. There are a spread of Ag–Tl bond distances ranging from 3.32–3.68 Å. There are a spread of Ag–Te bond distances ranging from 2.86–3.09 Å. There are three inequivalent Tl1+ sites. In the first Tl1+ site, Tl1+ is bonded in a 3-coordinate geometry to two equivalent Tl1+ and four Te2- atoms. There are one shorter (3.70 Å) and one longer (3.79 Å) Tl–Tl bond lengths. There are a spread of Tl–Te bond distances ranging from 3.32–3.81 Å. In the second Tl1+ site, Tl1+ is bonded in a 4-coordinate geometry to two equivalent Ag1+, three Tl1+, and five Te2- atoms. The Tl–Tl bond length is 3.76 Å. There are a spread of Tl–Te bond distances ranging from 3.35–3.75 Å. In the third Tl1+ site, Tl1+ is bonded in a 2-coordinate geometry to two equivalent Ag1+, one Tl1+, and five Te2- atoms. There are a spread of Tl–Te bond distances ranging from 3.29–3.83 Å. There are two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 9-coordinate geometry to one Ag1+ and seven Tl1+ atoms. In the second Te2- site, Te2- is bonded in a 10-coordinate geometry to three equivalent Ag1+ and seven Tl1+ atoms.