RbU3TiTe9 crystallizes in the monoclinic P2_1/m space group. Rb(1) is bonded to two equivalent Te(1), two equivalent Te(2), two equivalent Te(7), three equivalent Te(3), and three equivalent Te(5) atoms to form RbTe12 cuboctahedra that share corners with two equivalent Rb(1)Te12 cuboctahedra, corners with four equivalent Ti(1)Te6 octahedra, edges with two equivalent Rb(1)Te12 cuboctahedra, faces with two equivalent Rb(1)Te12 cuboctahedra, and faces with four equivalent Ti(1)Te6 octahedra. The corner-sharing octahedral tilt angles are 18°. There are three inequivalent U sites. In the first U site, U(1) is bonded in a 8-coordinate geometry to one Te(3), one Te(5), two equivalent Te(1), two equivalent Te(2), and two equivalent Te(7) atoms. In the second U site, U(2) is bonded in a 8-coordinate geometry to one Te(4), two equivalent Te(1), two equivalent Te(2), and three equivalent Te(6) atoms. In the third U site, U(3) is bonded in a 8-coordinate geometry to one Te(6), two equivalent Te(1), two equivalent Te(2), and three equivalent Te(4) atoms. Ti(1) is bonded to two equivalent Te(3), two equivalent Te(5), and two equivalent Te(7) atoms to form TiTe6 octahedra that share corners with four equivalent Rb(1)Te12 cuboctahedra, faces with four equivalent Rb(1)Te12 cuboctahedra, and faces with two equivalent Ti(1)Te6 octahedra. There are seven inequivalent Te sites. In the first Te site, Te(1) is bonded in a 6-coordinate geometry to one Rb(1), one U(1), one U(2), one U(3), and two equivalent Te(1) atoms. In the second Te site, Te(2) is bonded in a 6-coordinate geometry to one Rb(1), one U(1), one U(2), one U(3), and two equivalent Te(2) atoms. In the third Te site, Te(3) is bonded to three equivalent Rb(1), one U(1), and two equivalent Ti(1) atoms to form a mixture of distorted edge, face, and corner-sharing TeRb3UTi2 octahedra. The corner-sharing octahedral tilt angles range from 0-77°. In the fourth Te site, Te(4) is bonded to one U(2) and three equivalent U(3) atoms to form a mixture of distorted edge and corner-sharing TeU4 trigonal pyramids. In the fifth Te site, Te(5) is bonded to three equivalent Rb(1), one U(1), and two equivalent Ti(1) atoms to form a mixture of distorted edge, face, and corner-sharing TeRb3UTi2 octahedra. The corner-sharing octahedral tilt angles range from 0-77°. In the sixth Te site, Te(6) is bonded to one U(3) and three equivalent U(2) atoms to form a mixture of distorted edge and corner-sharing TeU4 trigonal pyramids. In the seventh Te site, Te(7) is bonded in a 4-coordinate geometry to two equivalent Rb(1), two equivalent U(1), and two equivalent Ti(1) atoms.
RbU3TiTe9 crystallizes in the monoclinic P2_1/m space group. Rb(1) is bonded to two equivalent Te(1), two equivalent Te(2), two equivalent Te(7), three equivalent Te(3), and three equivalent Te(5) atoms to form RbTe12 cuboctahedra that share corners with two equivalent Rb(1)Te12 cuboctahedra, corners with four equivalent Ti(1)Te6 octahedra, edges with two equivalent Rb(1)Te12 cuboctahedra, faces with two equivalent Rb(1)Te12 cuboctahedra, and faces with four equivalent Ti(1)Te6 octahedra. The corner-sharing octahedral tilt angles are 18°. Both Rb(1)-Te(1) bond lengths are 4.06 Å. Both Rb(1)-Te(2) bond lengths are 4.07 Å. Both Rb(1)-Te(7) bond lengths are 4.22 Å. There are two shorter (3.98 Å) and one longer (4.04 Å) Rb(1)-Te(3) bond length. There are two shorter (3.98 Å) and one longer (4.04 Å) Rb(1)-Te(5) bond length. There are three inequivalent U sites. In the first U site, U(1) is bonded in a 8-coordinate geometry to one Te(3), one Te(5), two equivalent Te(1), two equivalent Te(2), and two equivalent Te(7) atoms. The U(1)-Te(3) bond length is 3.08 Å. The U(1)-Te(5) bond length is 3.08 Å. Both U(1)-Te(1) bond lengths are 3.24 Å. Both U(1)-Te(2) bond lengths are 3.24 Å. Both U(1)-Te(7) bond lengths are 3.28 Å. In the second U site, U(2) is bonded in a 8-coordinate geometry to one Te(4), two equivalent Te(1), two equivalent Te(2), and three equivalent Te(6) atoms. The U(2)-Te(4) bond length is 3.07 Å. Both U(2)-Te(1) bond lengths are 3.21 Å. Both U(2)-Te(2) bond lengths are 3.20 Å. There is one shorter (3.06 Å) and two longer (3.26 Å) U(2)-Te(6) bond lengths. In the third U site, U(3) is bonded in a 8-coordinate geometry to one Te(6), two equivalent Te(1), two equivalent Te(2), and three equivalent Te(4) atoms. The U(3)-Te(6) bond length is 3.14 Å. Both U(3)-Te(1) bond lengths are 3.20 Å. Both U(3)-Te(2) bond lengths are 3.20 Å. There is one shorter (3.15 Å) and two longer (3.32 Å) U(3)-Te(4) bond lengths. Ti(1) is bonded to two equivalent Te(3), two equivalent Te(5), and two equivalent Te(7) atoms to form TiTe6 octahedra that share corners with four equivalent Rb(1)Te12 cuboctahedra, faces with four equivalent Rb(1)Te12 cuboctahedra, and faces with two equivalent Ti(1)Te6 octahedra. Both Ti(1)-Te(3) bond lengths are 2.81 Å. Both Ti(1)-Te(5) bond lengths are 2.81 Å. Both Ti(1)-Te(7) bond lengths are 2.81 Å. There are seven inequivalent Te sites. In the first Te site, Te(1) is bonded in a 6-coordinate geometry to one Rb(1), one U(1), one U(2), one U(3), and two equivalent Te(1) atoms. There is one shorter (3.09 Å) and one longer (3.13 Å) Te(1)-Te(1) bond length. In the second Te site, Te(2) is bonded in a 6-coordinate geometry to one Rb(1), one U(1), one U(2), one U(3), and two equivalent Te(2) atoms. There is one shorter (3.10 Å) and one longer (3.12 Å) Te(2)-Te(2) bond length. In the third Te site, Te(3) is bonded to three equivalent Rb(1), one U(1), and two equivalent Ti(1) atoms to form a mixture of distorted edge, face, and corner-sharing TeRb3UTi2 octahedra. The corner-sharing octahedral tilt angles range from 0-77°. In the fourth Te site, Te(4) is bonded to one U(2) and three equivalent U(3) atoms to form a mixture of distorted edge and corner-sharing TeU4 trigonal pyramids. In the fifth Te site, Te(5) is bonded to three equivalent Rb(1), one U(1), and two equivalent Ti(1) atoms to form a mixture of distorted edge, face, and corner-sharing TeRb3UTi2 octahedra. The corner-sharing octahedral tilt angles range from 0-77°. In the sixth Te site, Te(6) is bonded to one U(3) and three equivalent U(2) atoms to form a mixture of distorted edge and corner-sharing TeU4 trigonal pyramids. In the seventh Te site, Te(7) is bonded in a 4-coordinate geometry to two equivalent Rb(1), two equivalent U(1), and two equivalent Ti(1) atoms.