Rb2Cu(SO7)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 7-coordinate geometry to one O(1), one O(4), one O(5), two equivalent O(2), and two equivalent O(7) atoms. Cu(1) is bonded in an octahedral geometry to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(4), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one S(1) atom. In the second O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1) and one S(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one S(1) atom. In the fourth O site, O(3) is bonded in a 2-coordinate geometry to one Cu(1) and one O(5) atom. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to one Rb(1), one S(1), and one O(6) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to one Rb(1), one Cu(1), and one O(3) atom. In the seventh O site, O(6) is bonded in a bent 120 degrees geometry to one Cu(1) and one O(4) atom.
Rb2Cu(SO7)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 7-coordinate geometry to one O(1), one O(4), one O(5), two equivalent O(2), and two equivalent O(7) atoms. The Rb(1)-O(1) bond length is 2.87 Å. The Rb(1)-O(4) bond length is 3.10 Å. The Rb(1)-O(5) bond length is 3.15 Å. There is one shorter (3.08 Å) and one longer (3.35 Å) Rb(1)-O(2) bond length. There is one shorter (2.91 Å) and one longer (3.01 Å) Rb(1)-O(7) bond length. Cu(1) is bonded in an octahedral geometry to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. Both Cu(1)-O(3) bond lengths are 1.85 Å. Both Cu(1)-O(5) bond lengths are 1.86 Å. Both Cu(1)-O(6) bond lengths are 2.55 Å. S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(4), and one O(7) atom. The S(1)-O(1) bond length is 1.44 Å. The S(1)-O(2) bond length is 1.46 Å. The S(1)-O(4) bond length is 1.85 Å. The S(1)-O(7) bond length is 1.46 Å. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one S(1) atom. In the second O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1) and one S(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one S(1) atom. In the fourth O site, O(3) is bonded in a 2-coordinate geometry to one Cu(1) and one O(5) atom. The O(3)-O(5) bond length is 1.36 Å. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to one Rb(1), one S(1), and one O(6) atom. The O(4)-O(6) bond length is 1.32 Å. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to one Rb(1), one Cu(1), and one O(3) atom. In the seventh O site, O(6) is bonded in a bent 120 degrees geometry to one Cu(1) and one O(4) atom.