Materials Data on Bi9Rh2Br3 by Materials Project
Rh4Bi18BrRh2Bi9Br(Br)7 crystallizes in the monoclinic P2_1/m space group. The structure is one-dimensional and consists of fourteen hydrobromic acid molecules; one Rh2Bi9Br ribbon oriented in the (0, 1, 0) direction; and two Rh4Bi18Br ribbons oriented in the (0, 1, 0) direction. In the Rh2Bi9Br ribbon, Rh is bonded in a 8-coordinate geometry to eight Bi atoms. There are a spread of Rh–Bi bond distances ranging from 2.80–2.90 Å. There are six inequivalent Bi sites. In the first Bi site, Bi is bonded in a distorted single-bond geometry to one Rh atom. In the second Bi site, Bi is bonded in a 7-coordinate geometry to two equivalent Rh atoms. In the third Bi site, Bi is bonded in a 7-coordinate geometry to two equivalent Rh atoms. In the fourth Bi site, Bi is bonded in a distorted L-shaped geometry to two equivalent Rh atoms. In the fifth Bi site, Bi is bonded in a 3-coordinate geometry to two equivalent Rh and one Br atom. The Bi–Br bond length is 3.37 Å. In the sixth Bi site, Bi is bonded in a distorted L-shaped geometry to two equivalent Rh atoms. Br is bonded in a 1-coordinate geometry to one Bi atom. In each Rh4Bi18Br ribbon, there are two inequivalent Rh sites. In the first Rh site, Rh is bonded in a 8-coordinate geometry to eight Bi atoms. There are a spread of Rh–Bi bond distances ranging from 2.80–2.90 Å. In the second Rh site, Rh is bonded in a 8-coordinate geometry to eight Bi atoms. There are a spread of Rh–Bi bond distances ranging from 2.81–2.92 Å. There are twelve inequivalent Bi sites. In the first Bi site, Bi is bonded in an L-shaped geometry to two equivalent Rh atoms. In the second Bi site, Bi is bonded in a distorted single-bond geometry to one Rh atom. In the third Bi site, Bi is bonded in a distorted single-bond geometry to one Rh atom. In the fourth Bi site, Bi is bonded in a 6-coordinate geometry to two Rh atoms. In the fifth Bi site, Bi is bonded in a distorted L-shaped geometry to two equivalent Rh atoms. In the sixth Bi site, Bi is bonded in an L-shaped geometry to two equivalent Rh atoms. In the seventh Bi site, Bi is bonded in a 6-coordinate geometry to two Rh atoms. In the eighth Bi site, Bi is bonded in a 6-coordinate geometry to two Rh atoms. In the ninth Bi site, Bi is bonded in a distorted L-shaped geometry to two equivalent Rh atoms. In the tenth Bi site, Bi is bonded in a distorted L-shaped geometry to two equivalent Rh atoms. In the eleventh Bi site, Bi is bonded in a 2-coordinate geometry to two Rh atoms. In the twelfth Bi site, Bi is bonded in a distorted trigonal non-coplanar geometry to two equivalent Rh and one Br atom. The Bi–Br bond length is 3.30 Å. Br is bonded in a single-bond geometry to one Bi atom.