DOI: 10.17188/1266103
title: Materials Data on Rb4(BSe)9 by Materials Project

description: Rb4(BSe)9 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are four inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 9-coordinate geometry to one B+0.33- and eight Se+0.11- atoms. The Rb–B bond length is 3.69 Å. There are a spread of Rb–Se bond distances ranging from 3.56–3.97 Å. In the second Rb1+ site, Rb1+ is bonded in a 7-coordinate geometry to seven Se+0.11- atoms. There are a spread of Rb–Se bond distances ranging from 3.52–3.71 Å. In the third Rb1+ site, Rb1+ is bonded in a 8-coordinate geometry to eight Se+0.11- atoms. There are a spread of Rb–Se bond distances ranging from 3.47–3.88 Å. In the fourth Rb1+ site, Rb1+ is bonded in a 8-coordinate geometry to eight Se+0.11- atoms. There are a spread of Rb–Se bond distances ranging from 3.70–4.14 Å. There are nine inequivalent B+0.33- sites. In the first B+0.33- site, B+0.33- is bonded in a distorted single-bond geometry to five B+0.33- and one Se+0.11- atom. There are a spread of B–B bond distances ranging from 1.77–1.79 Å. The B–Se bond length is 2.01 Å. In the second B+0.33- site, B+0.33- is bonded in a 1-coordinate geometry to five B+0.33- and one Se+0.11- atom. There is two shorter (1.78 Å) and two longer (1.80 Å) B–B bond length. The B–Se bond length is 2.02 Å. In the third B+0.33- site, B+0.33- is bonded in a distorted single-bond geometry to five B+0.33- and one Se+0.11- atom. There is one shorter (1.77 Å) and two longer (1.78 Å) B–B bond length. The B–Se bond length is 2.01 Å. In the fourth B+0.33- site, B+0.33- is bonded in a 1-coordinate geometry to five B+0.33- and one Se+0.11- atom. There is one shorter (1.78 Å) and one longer (1.79 Å) B–B bond length. The B–Se bond length is 2.02 Å. In the fifth B+0.33- site, B+0.33- is bonded in a 1-coordinate geometry to five B+0.33- and one Se+0.11- atom. The B–B bond length is 1.78 Å. The B–Se bond length is 2.02 Å. In the sixth B+0.33- site, B+0.33- is bonded in a distorted single-bond geometry to five B+0.33- and one Se+0.11- atom. The B–Se bond length is 2.01 Å. In the seventh B+0.33- site, B+0.33- is bonded in a trigonal planar geometry to three Se+0.11- atoms. There are a spread of B–Se bond distances ranging from 1.92–2.00 Å. In the eighth B+0.33- site, B+0.33- is bonded in a trigonal planar geometry to one Rb1+ and three Se+0.11- atoms. There are a spread of B–Se bond distances ranging from 1.92–2.00 Å. In the ninth B+0.33- site, B+0.33- is bonded in a trigonal planar geometry to three Se+0.11- atoms. There are a spread of B–Se bond distances ranging from 1.91–2.00 Å. There are nine inequivalent Se+0.11- sites. In the first Se+0.11- site, Se+0.11- is bonded in a distorted water-like geometry to three Rb1+ and two B+0.33- atoms. In the second Se+0.11- site, Se+0.11- is bonded in a distorted water-like geometry to three Rb1+ and two B+0.33- atoms. In the third Se+0.11- site, Se+0.11- is bonded in a distorted L-shaped geometry to two Rb1+ and two B+0.33- atoms. In the fourth Se+0.11- site, Se+0.11- is bonded in a distorted water-like geometry to three Rb1+ and two B+0.33- atoms. In the fifth Se+0.11- site, Se+0.11- is bonded in a distorted water-like geometry to three Rb1+ and two B+0.33- atoms. In the sixth Se+0.11- site, Se+0.11- is bonded in a distorted L-shaped geometry to two Rb1+ and two B+0.33- atoms. In the seventh Se+0.11- site, Se+0.11- is bonded in a distorted single-bond geometry to five Rb1+ and one B+0.33- atom. In the eighth Se+0.11- site, Se+0.11- is bonded in a distorted single-bond geometry to five Rb1+ and one B+0.33- atom. In the ninth Se+0.11- site, Se+0.11- is bonded in a distorted single-bond geometry to five Rb1+ and one B+0.33- atom.