Rb2RuO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one O(2), three equivalent O(1), and six equivalent O(3) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to two equivalent O(1), three equivalent O(2), and four equivalent O(3) atoms. Ru(1) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Rb(2), three equivalent Rb(1), and one Ru(1) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to one Rb(1), three equivalent Rb(2), and one Ru(1) atom. In the third O site, O(3) is bonded in a 1-coordinate geometry to two equivalent Rb(2), three equivalent Rb(1), and one Ru(1) atom.
Rb2RuO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to one O(2), three equivalent O(1), and six equivalent O(3) atoms. The Rb(1)-O(2) bond length is 2.78 Å. There are two shorter (3.12 Å) and one longer (3.30 Å) Rb(1)-O(1) bond length. There are a spread of Rb(1)-O(3) bond distances ranging from 3.08-3.47 Å. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to two equivalent O(1), three equivalent O(2), and four equivalent O(3) atoms. There is one shorter (2.91 Å) and one longer (2.93 Å) Rb(2)-O(1) bond length. There is one shorter (3.08 Å) and two longer (3.41 Å) Rb(2)-O(2) bond lengths. There are two shorter (2.85 Å) and two longer (2.94 Å) Rb(2)-O(3) bond lengths. Ru(1) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(3) atoms. The Ru(1)-O(1) bond length is 1.79 Å. The Ru(1)-O(2) bond length is 1.77 Å. Both Ru(1)-O(3) bond lengths are 1.78 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Rb(2), three equivalent Rb(1), and one Ru(1) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to one Rb(1), three equivalent Rb(2), and one Ru(1) atom. In the third O site, O(3) is bonded in a 1-coordinate geometry to two equivalent Rb(2), three equivalent Rb(1), and one Ru(1) atom.