Materials Data on B8Ru11 by Materials Project
Ru11B8 crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. there are six inequivalent Ru+2.18+ sites. In the first Ru+2.18+ site, Ru+2.18+ is bonded in a 5-coordinate geometry to five B3- atoms. There are a spread of Ru–B bond distances ranging from 2.23–2.76 Å. In the second Ru+2.18+ site, Ru+2.18+ is bonded in a square co-planar geometry to four equivalent B3- atoms. All Ru–B bond lengths are 2.25 Å. In the third Ru+2.18+ site, Ru+2.18+ is bonded in a 6-coordinate geometry to six B3- atoms. There are two shorter (2.29 Å) and four longer (2.32 Å) Ru–B bond lengths. In the fourth Ru+2.18+ site, Ru+2.18+ is bonded in a trigonal non-coplanar geometry to three B3- atoms. There are two shorter (2.12 Å) and one longer (2.19 Å) Ru–B bond lengths. In the fifth Ru+2.18+ site, Ru+2.18+ is bonded in a 7-coordinate geometry to seven B3- atoms. There are a spread of Ru–B bond distances ranging from 2.21–2.46 Å. In the sixth Ru+2.18+ site, Ru+2.18+ is bonded in a 4-coordinate geometry to four B3- atoms. There are a spread of Ru–B bond distances ranging from 2.15–2.53 Å. There are four inequivalent B3- sites. In the first B3- site, B3- is bonded in a 7-coordinate geometry to seven Ru+2.18+ atoms. In the second B3- site, B3- is bonded in a 7-coordinate geometry to six Ru+2.18+ and two equivalent B3- atoms. Both B–B bond lengths are 1.80 Å. In the third B3- site, B3- is bonded in a 2-coordinate geometry to eight Ru+2.18+ and one B3- atom. The B–B bond length is 2.01 Å. In the fourth B3- site, B3- is bonded in a 9-coordinate geometry to six Ru+2.18+ and three B3- atoms.