Materials Data on Rb by Materials Project

Abstract

Rb is Magnesium tetraboride-derived structured and crystallizes in the orthorhombic C222_1 space group. The structure is three-dimensional. there are seven inequivalent Rb sites. In the first Rb site, Rb is bonded in a 9-coordinate geometry to nine Rb atoms. There are a spread of Rb–Rb bond distances ranging from 4.84–5.08 Å. In the second Rb site, Rb is bonded in a 7-coordinate geometry to seven Rb atoms. There are a spread of Rb–Rb bond distances ranging from 4.69–5.05 Å. In the third Rb site, Rb is bonded in a 4-coordinate geometry to ten Rb atoms. There are a spread of Rb–Rb bond distances ranging from 4.86–5.21 Å. In the fourth Rb site, Rb is bonded in a 8-coordinate geometry to eight Rb atoms. There are a spread of Rb–Rb bond distances ranging from 4.80–5.07 Å. In the fifth Rb site, Rb is bonded in a 8-coordinate geometry to eight Rb atoms. There are a spread of Rb–Rb bond distances ranging from 4.43–5.00 Å. In the sixth Rb site, Rb is bonded in a 5-coordinate geometry to nine Rb atoms. The Rb–Rb bond length is 4.83 Å. In the seventh Rb site, Rb is bonded to eight Rb atoms to form distorted corner-sharing RbRb8 hexagonal bipyramids. The Rb–Rb bond length is 4.30 Å.