Materials Data on Rb2Mg by Materials Project

Abstract

Rb2Mg crystallizes in the monoclinic C2/m space group. The structure is two-dimensional and consists of two Rb2Mg sheets oriented in the (1, 0, 0) direction. there are two inequivalent Rb sites. In the first Rb site, Rb is bonded in a 9-coordinate geometry to four equivalent Mg atoms. There are two shorter (4.28 Å) and two longer (4.30 Å) Rb–Mg bond lengths. In the second Rb site, Rb is bonded in a 4-coordinate geometry to four equivalent Mg atoms. There are two shorter (4.01 Å) and two longer (4.04 Å) Rb–Mg bond lengths. Mg is bonded in a 9-coordinate geometry to eight Rb and one Mg atom. The Mg–Mg bond length is 3.18 Å.