Rb2U3MnO11 crystallizes in the trigonal R-3c space group. Rb(1) is bonded in a 10-coordinate geometry to one O(3), three equivalent O(2), and six equivalent O(1) atoms. U(1) is bonded in a 7-coordinate geometry to two equivalent O(1), two equivalent O(3), and three equivalent O(2) atoms. Mn(1) is bonded in an octahedral geometry to six equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Rb(1), one U(1), and one Mn(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent Rb(1) and three equivalent U(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(1) and three equivalent U(1) atoms.
Rb2U3MnO11 crystallizes in the trigonal R-3c space group. Rb(1) is bonded in a 10-coordinate geometry to one O(3), three equivalent O(2), and six equivalent O(1) atoms. The Rb(1)-O(3) bond length is 3.01 Å. All Rb(1)-O(2) bond lengths are 3.43 Å. There are three shorter (2.89 Å) and three longer (2.92 Å) Rb(1)-O(1) bond lengths. U(1) is bonded in a 7-coordinate geometry to two equivalent O(1), two equivalent O(3), and three equivalent O(2) atoms. Both U(1)-O(1) bond lengths are 1.94 Å. Both U(1)-O(3) bond lengths are 2.24 Å. There are two shorter (2.24 Å) and one longer (2.64 Å) U(1)-O(2) bond length. Mn(1) is bonded in an octahedral geometry to six equivalent O(1) atoms. All Mn(1)-O(1) bond lengths are 2.24 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Rb(1), one U(1), and one Mn(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent Rb(1) and three equivalent U(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(1) and three equivalent U(1) atoms.