DOI: 10.17188/1282979
title: Materials Data on Ag9Te4Br3 by Materials Project

description: Ag9Te4Br3 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are nine inequivalent Ag+1.22+ sites. In the first Ag+1.22+ site, Ag+1.22+ is bonded in a 2-coordinate geometry to two Te2- and two Br1- atoms. There are one shorter (2.73 Å) and one longer (2.86 Å) Ag–Te bond lengths. There are one shorter (2.67 Å) and one longer (2.94 Å) Ag–Br bond lengths. In the second Ag+1.22+ site, Ag+1.22+ is bonded in a 4-coordinate geometry to two Ag+1.22+ and four Te2- atoms. There are one shorter (2.90 Å) and one longer (2.97 Å) Ag–Ag bond lengths. There are a spread of Ag–Te bond distances ranging from 2.87–2.92 Å. In the third Ag+1.22+ site, Ag+1.22+ is bonded in a 4-coordinate geometry to one Ag+1.22+, two Te2-, and two Br1- atoms. The Ag–Ag bond length is 2.99 Å. There are one shorter (2.81 Å) and one longer (2.88 Å) Ag–Te bond lengths. There are one shorter (2.82 Å) and one longer (3.05 Å) Ag–Br bond lengths. In the fourth Ag+1.22+ site, Ag+1.22+ is bonded in a 1-coordinate geometry to two Ag+1.22+, three Te2-, and one Br1- atom. The Ag–Ag bond length is 3.00 Å. There are a spread of Ag–Te bond distances ranging from 2.83–3.05 Å. The Ag–Br bond length is 2.78 Å. In the fifth Ag+1.22+ site, Ag+1.22+ is bonded in a 1-coordinate geometry to one Ag+1.22+, three Te2-, and one Br1- atom. The Ag–Ag bond length is 2.94 Å. There are a spread of Ag–Te bond distances ranging from 2.83–3.02 Å. The Ag–Br bond length is 2.74 Å. In the sixth Ag+1.22+ site, Ag+1.22+ is bonded in a 4-coordinate geometry to four Ag+1.22+, three Te2-, and one Br1- atom. There are one shorter (2.88 Å) and one longer (2.93 Å) Ag–Ag bond lengths. There are a spread of Ag–Te bond distances ranging from 2.89–2.92 Å. The Ag–Br bond length is 3.15 Å. In the seventh Ag+1.22+ site, Ag+1.22+ is bonded in a 4-coordinate geometry to two Ag+1.22+, one Te2-, and three Br1- atoms. The Ag–Ag bond length is 2.92 Å. The Ag–Te bond length is 2.78 Å. There are a spread of Ag–Br bond distances ranging from 2.74–2.87 Å. In the eighth Ag+1.22+ site, Ag+1.22+ is bonded in a 2-coordinate geometry to four Ag+1.22+, three Te2-, and one Br1- atom. There are a spread of Ag–Te bond distances ranging from 2.86–3.26 Å. The Ag–Br bond length is 2.99 Å. In the ninth Ag+1.22+ site, Ag+1.22+ is bonded in a 1-coordinate geometry to two Te2- and three Br1- atoms. There are one shorter (2.78 Å) and one longer (2.88 Å) Ag–Te bond lengths. There are one shorter (2.73 Å) and two longer (3.19 Å) Ag–Br bond lengths. There are four inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 6-coordinate geometry to six Ag+1.22+ atoms. In the second Te2- site, Te2- is bonded in a 5-coordinate geometry to five Ag+1.22+ atoms. In the third Te2- site, Te2- is bonded in a 6-coordinate geometry to six Ag+1.22+ atoms. In the fourth Te2- site, Te2- is bonded in a 6-coordinate geometry to six Ag+1.22+ atoms. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted rectangular see-saw-like geometry to four Ag+1.22+ atoms. In the second Br1- site, Br1- is bonded in a 2-coordinate geometry to five Ag+1.22+ atoms. In the third Br1- site, Br1- is bonded in a 5-coordinate geometry to five Ag+1.22+ atoms.