Rb2MgO2 is Bixbyite (Mn,Fe)2O4-like structured and crystallizes in the orthorhombic Pbcn space group. Rb(1) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms. Mg(1) is bonded to four equivalent O(1) atoms to form distorted edge-sharing MgO4 tetrahedra. O(1) is bonded in a 2-coordinate geometry to four equivalent Rb(1) and two equivalent Mg(1) atoms.
Rb2MgO2 is Bixbyite (Mn,Fe)2O4-like structured and crystallizes in the orthorhombic Pbcn space group. Rb(1) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms. There are a spread of Rb(1)-O(1) bond distances ranging from 2.81-3.19 Å. Mg(1) is bonded to four equivalent O(1) atoms to form distorted edge-sharing MgO4 tetrahedra. There are two shorter (2.01 Å) and two longer (2.06 Å) Mg(1)-O(1) bond lengths. O(1) is bonded in a 2-coordinate geometry to four equivalent Rb(1) and two equivalent Mg(1) atoms.