Materials Data on RbMg6Co by Materials Project

RbMg6Co crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. Rb is bonded in a 2-coordinate geometry to eight Mg and two equivalent Co atoms. There are a spread of Rb–Mg bond distances ranging from 3.33–4.00 Å. Both Rb–Co bond lengths are 3.71 Å. There are four inequivalent Mg sites. In the first Mg site, Mg is bonded in a distorted single-bond geometry to two equivalent Rb, two equivalent Mg, and one Co atom. Both Mg–Mg bond lengths are 3.17 Å. The Mg–Co bond length is 2.57 Å. In the second Mg site, Mg is bonded in a 2-coordinate geometry to four equivalent Mg and two equivalent Co atoms. All Mg–Mg bond lengths are 3.09 Å. Both Mg–Co bond lengths are 3.27 Å. In the third Mg site, Mg is bonded in a distorted bent 120 degrees geometry to one Rb, two equivalent Mg, and two equivalent Co atoms. Both Mg–Co bond lengths are 2.68 Å. In the fourth Mg site, Mg is bonded in a 2-coordinate geometry to two equivalent Rb and four equivalent Mg atoms. Co is bonded in a 6-coordinate geometry to two equivalent Rb and eight Mg atoms.