Rb2Cu3(P2O7)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), two equivalent O(6), and two equivalent O(7) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(2) and two equivalent O(7) atoms. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(3), one O(4), and one O(6) atom. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(5), and one O(7) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form corner-sharing PO4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a distorted bent 120 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(6) is bonded in a distorted bent 150 degrees geometry to two equivalent Rb(1), one Cu(2), and one P(2) atom. In the third O site, O(7) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one Cu(1), and one P(1) atom. In the fourth O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Cu(2), and one P(1) atom. In the fifth O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Cu(1), and one P(2) atom. In the sixth O site, O(3) is bonded in a 2-coordinate geometry to one Rb(1), one Cu(2), and one P(1) atom. In the seventh O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Cu(2), and one P(2) atom.
Rb2Cu3(P2O7)2 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), two equivalent O(6), and two equivalent O(7) atoms. The Rb(1)-O(1) bond length is 3.17 Å. The Rb(1)-O(2) bond length is 3.09 Å. The Rb(1)-O(3) bond length is 2.95 Å. The Rb(1)-O(4) bond length is 3.10 Å. There is one shorter (3.35 Å) and one longer (3.36 Å) Rb(1)-O(6) bond length. There is one shorter (3.03 Å) and one longer (3.09 Å) Rb(1)-O(7) bond length. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(2) and two equivalent O(7) atoms. Both Cu(1)-O(2) bond lengths are 1.97 Å. Both Cu(1)-O(7) bond lengths are 1.97 Å. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(3), one O(4), and one O(6) atom. The Cu(2)-O(1) bond length is 1.98 Å. The Cu(2)-O(3) bond length is 1.96 Å. The Cu(2)-O(4) bond length is 1.98 Å. The Cu(2)-O(6) bond length is 1.97 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(5), and one O(7) atom to form corner-sharing PO4 tetrahedra. The P(1)-O(1) bond length is 1.53 Å. The P(1)-O(3) bond length is 1.53 Å. The P(1)-O(5) bond length is 1.64 Å. The P(1)-O(7) bond length is 1.54 Å. In the second P site, P(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form corner-sharing PO4 tetrahedra. The P(2)-O(2) bond length is 1.54 Å. The P(2)-O(4) bond length is 1.54 Å. The P(2)-O(5) bond length is 1.64 Å. The P(2)-O(6) bond length is 1.52 Å. There are seven inequivalent O sites. In the first O site, O(5) is bonded in a distorted bent 120 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(6) is bonded in a distorted bent 150 degrees geometry to two equivalent Rb(1), one Cu(2), and one P(2) atom. In the third O site, O(7) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one Cu(1), and one P(1) atom. In the fourth O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Cu(2), and one P(1) atom. In the fifth O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Cu(1), and one P(2) atom. In the sixth O site, O(3) is bonded in a 2-coordinate geometry to one Rb(1), one Cu(2), and one P(1) atom. In the seventh O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Cu(2), and one P(2) atom.