Materials Data on Cs3Au2Br11 by Materials Project

Cs3Au2Br11 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 11-coordinate geometry to eleven Br1- atoms. There are a spread of Cs–Br bond distances ranging from 3.77–4.25 Å. In the second Cs1+ site, Cs1+ is bonded in a 10-coordinate geometry to ten Br1- atoms. There are a spread of Cs–Br bond distances ranging from 3.72–4.18 Å. In the third Cs1+ site, Cs1+ is bonded in a 10-coordinate geometry to ten Br1- atoms. There are a spread of Cs–Br bond distances ranging from 3.72–4.23 Å. There are two inequivalent Au4+ sites. In the first Au4+ site, Au4+ is bonded in a rectangular see-saw-like geometry to four Br1- atoms. All Au–Br bond lengths are 2.48 Å. In the second Au4+ site, Au4+ is bonded in a rectangular see-saw-like geometry to four Br1- atoms. There are a spread of Au–Br bond distances ranging from 2.47–2.49 Å. There are eleven inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 1-coordinate geometry to three Cs1+ and one Au4+ atom. In the second Br1- site, Br1- is bonded in a 4-coordinate geometry to three Cs1+ and one Br1- atom. The Br–Br bond length is 2.58 Å. In the third Br1- site, Br1- is bonded in a 1-coordinate geometry to three Cs1+ and one Au4+ atom. In the fourth Br1- site, Br1- is bonded in a 3-coordinate geometry to two Cs1+ and one Br1- atom. The Br–Br bond length is 2.59 Å. In the fifth Br1- site, Br1- is bonded in a 1-coordinate geometry to three Cs1+ and one Au4+ atom. In the sixth Br1- site, Br1- is bonded in a 4-coordinate geometry to three Cs1+ and one Au4+ atom. In the seventh Br1- site, Br1- is bonded to three Cs1+ and one Au4+ atom to form distorted edge-sharing BrCs3Au tetrahedra. In the eighth Br1- site, Br1- is bonded in a 4-coordinate geometry to three equivalent Cs1+ and one Au4+ atom. In the ninth Br1- site, Br1- is bonded in a 1-coordinate geometry to four Cs1+ and one Au4+ atom. In the tenth Br1- site, Br1- is bonded in a distorted T-shaped geometry to two Cs1+ and one Au4+ atom. In the eleventh Br1- site, Br1- is bonded in a 4-coordinate geometry to two equivalent Cs1+ and two Br1- atoms.