SrCu2(TeO3)2Cl2 crystallizes in the monoclinic P2_1 space group. Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(5), two equivalent O(2), two equivalent O(4), and two equivalent Cl(1) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 4-coordinate geometry to one O(3), one O(5), one O(6), one Cl(1), and one Cl(2) atom. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted T-shaped geometry to one O(4), one O(5), and one O(6) atom. In the second Te site, Te(2) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(3), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Sr(1), one Cu(2), and one Te(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Cu(2), and one Te(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Cu(1), one Cu(2), and one Te(2) atom. In the fourth O site, O(4) is bonded to two equivalent Sr(1), one Cu(2), and one Te(1) atom to form distorted corner-sharing OSr2CuTe tetrahedra. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one Cu(1), and one Te(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Cu(1), one Te(1), and one Te(2) atom. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a T-shaped geometry to two equivalent Sr(1) and one Cu(1) atom. In the second Cl site, Cl(2) is bonded in a distorted single-bond geometry to one Cu(1) atom.
SrCu2(TeO3)2Cl2 crystallizes in the monoclinic P2_1 space group. Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(5), two equivalent O(2), two equivalent O(4), and two equivalent Cl(1) atoms. The Sr(1)-O(1) bond length is 2.48 Å. The Sr(1)-O(5) bond length is 2.82 Å. There is one shorter (2.67 Å) and one longer (2.77 Å) Sr(1)-O(2) bond length. There is one shorter (2.67 Å) and one longer (2.88 Å) Sr(1)-O(4) bond length. There is one shorter (2.96 Å) and one longer (3.05 Å) Sr(1)-Cl(1) bond length. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 4-coordinate geometry to one O(3), one O(5), one O(6), one Cl(1), and one Cl(2) atom. The Cu(1)-O(3) bond length is 1.97 Å. The Cu(1)-O(5) bond length is 1.96 Å. The Cu(1)-O(6) bond length is 2.01 Å. The Cu(1)-Cl(1) bond length is 2.94 Å. The Cu(1)-Cl(2) bond length is 2.30 Å. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(4) atom. The Cu(2)-O(1) bond length is 1.97 Å. The Cu(2)-O(2) bond length is 2.00 Å. The Cu(2)-O(3) bond length is 1.95 Å. The Cu(2)-O(4) bond length is 1.97 Å. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted T-shaped geometry to one O(4), one O(5), and one O(6) atom. The Te(1)-O(4) bond length is 1.92 Å. The Te(1)-O(5) bond length is 1.90 Å. The Te(1)-O(6) bond length is 1.91 Å. In the second Te site, Te(2) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(3), and one O(6) atom. The Te(2)-O(1) bond length is 1.93 Å. The Te(2)-O(2) bond length is 1.94 Å. The Te(2)-O(3) bond length is 1.94 Å. The Te(2)-O(6) bond length is 2.36 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Sr(1), one Cu(2), and one Te(2) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Sr(1), one Cu(2), and one Te(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Cu(1), one Cu(2), and one Te(2) atom. In the fourth O site, O(4) is bonded to two equivalent Sr(1), one Cu(2), and one Te(1) atom to form distorted corner-sharing OSr2CuTe tetrahedra. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one Cu(1), and one Te(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Cu(1), one Te(1), and one Te(2) atom. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a T-shaped geometry to two equivalent Sr(1) and one Cu(1) atom. In the second Cl site, Cl(2) is bonded in a distorted single-bond geometry to one Cu(1) atom.