Rb2U3(TeO7)2 crystallizes in the triclinic P-1 space group. Rb(1) is bonded in a 6-coordinate geometry to one O(3), one O(5), two equivalent O(6), and two equivalent O(7) atoms. There are two inequivalent U sites. In the first U site, U(1) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(7) atoms to form a mixture of distorted edge and corner-sharing UO6 octahedra. In the second U site, U(2) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted UO7 pentagonal bipyramids that share  a cornercorner with one U(1)O6 octahedra,  an edgeedge with one U(1)O6 octahedra, and  an edgeedge with one U(2)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 47°. Te(1) is bonded in a 3-coordinate geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one U(1), one U(2), and one Te(1) atom. In the second O site, O(2) is bonded in a linear geometry to one U(2) and one Te(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(1), one U(2), and two equivalent Te(1) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one U(1) and two equivalent U(2) atoms. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(1) and one U(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one U(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one U(1) atom.
Rb2U3(TeO7)2 crystallizes in the triclinic P-1 space group. Rb(1) is bonded in a 6-coordinate geometry to one O(3), one O(5), two equivalent O(6), and two equivalent O(7) atoms. The Rb(1)-O(3) bond length is 2.99 Å. The Rb(1)-O(5) bond length is 2.94 Å. There is one shorter (2.92 Å) and one longer (3.00 Å) Rb(1)-O(6) bond length. There is one shorter (2.90 Å) and one longer (3.08 Å) Rb(1)-O(7) bond length. There are two inequivalent U sites. In the first U site, U(1) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(7) atoms to form a mixture of distorted edge and corner-sharing UO6 octahedra. Both U(1)-O(1) bond lengths are 2.34 Å. Both U(1)-O(4) bond lengths are 2.23 Å. Both U(1)-O(7) bond lengths are 1.85 Å. In the second U site, U(2) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted UO7 pentagonal bipyramids that share  a cornercorner with one U(1)O6 octahedra,  an edgeedge with one U(1)O6 octahedra, and  an edgeedge with one U(2)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 47°. The U(2)-O(1) bond length is 2.49 Å. The U(2)-O(2) bond length is 2.27 Å. The U(2)-O(3) bond length is 2.46 Å. The U(2)-O(5) bond length is 1.84 Å. The U(2)-O(6) bond length is 1.86 Å. There is one shorter (2.28 Å) and one longer (2.36 Å) U(2)-O(4) bond length. Te(1) is bonded in a 3-coordinate geometry to one O(1), one O(2), and two equivalent O(3) atoms. The Te(1)-O(1) bond length is 1.91 Å. The Te(1)-O(2) bond length is 1.89 Å. There is one shorter (1.91 Å) and one longer (2.69 Å) Te(1)-O(3) bond length. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one U(1), one U(2), and one Te(1) atom. In the second O site, O(2) is bonded in a linear geometry to one U(2) and one Te(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(1), one U(2), and two equivalent Te(1) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one U(1) and two equivalent U(2) atoms. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(1) and one U(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one U(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to two equivalent Rb(1) and one U(1) atom.