TlSrLa(AsO4)2 is Zircon-derived structured and crystallizes in the trigonal P3_2 space group. The structure consists of three 7440-28-0 atoms inside a SrLa(AsO4)2 framework. In the SrLa(AsO4)2 framework, Sr(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted SrO8 hexagonal bipyramids that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, edges with four equivalent La(1)O8 hexagonal bipyramids,  an edgeedge with one As(1)O4 tetrahedra, and  an edgeedge with one As(2)O4 tetrahedra. La(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted LaO8 hexagonal bipyramids that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, edges with four equivalent Sr(1)O8 hexagonal bipyramids,  an edgeedge with one As(1)O4 tetrahedra, and  an edgeedge with one As(2)O4 tetrahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(2), one O(3), one O(5), and one O(7) atom to form AsO4 tetrahedra that share corners with two equivalent Sr(1)O8 hexagonal bipyramids, corners with two equivalent La(1)O8 hexagonal bipyramids,  an edgeedge with one Sr(1)O8 hexagonal bipyramid, and  an edgeedge with one La(1)O8 hexagonal bipyramid. In the second As site, As(2) is bonded to one O(1), one O(4), one O(6), and one O(8) atom to form AsO4 tetrahedra that share corners with two equivalent Sr(1)O8 hexagonal bipyramids, corners with two equivalent La(1)O8 hexagonal bipyramids,  an edgeedge with one Sr(1)O8 hexagonal bipyramid, and  an edgeedge with one La(1)O8 hexagonal bipyramid. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(2) atom.
TlSrLa(AsO4)2 is Zircon-derived structured and crystallizes in the trigonal P3_2 space group. The structure consists of three 7440-28-0 atoms inside a SrLa(AsO4)2 framework. In the SrLa(AsO4)2 framework, Sr(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted SrO8 hexagonal bipyramids that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, edges with four equivalent La(1)O8 hexagonal bipyramids,  an edgeedge with one As(1)O4 tetrahedra, and  an edgeedge with one As(2)O4 tetrahedra. The Sr(1)-O(1) bond length is 2.52 Å. The Sr(1)-O(2) bond length is 2.80 Å. The Sr(1)-O(3) bond length is 2.54 Å. The Sr(1)-O(4) bond length is 2.81 Å. The Sr(1)-O(5) bond length is 2.52 Å. The Sr(1)-O(6) bond length is 2.84 Å. The Sr(1)-O(7) bond length is 2.78 Å. The Sr(1)-O(8) bond length is 2.54 Å. La(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted LaO8 hexagonal bipyramids that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, edges with four equivalent Sr(1)O8 hexagonal bipyramids,  an edgeedge with one As(1)O4 tetrahedra, and  an edgeedge with one As(2)O4 tetrahedra. The La(1)-O(1) bond length is 2.73 Å. The La(1)-O(2) bond length is 2.46 Å. The La(1)-O(3) bond length is 2.62 Å. The La(1)-O(4) bond length is 2.49 Å. The La(1)-O(5) bond length is 2.71 Å. The La(1)-O(6) bond length is 2.45 Å. The La(1)-O(7) bond length is 2.49 Å. The La(1)-O(8) bond length is 2.64 Å. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(2), one O(3), one O(5), and one O(7) atom to form AsO4 tetrahedra that share corners with two equivalent Sr(1)O8 hexagonal bipyramids, corners with two equivalent La(1)O8 hexagonal bipyramids,  an edgeedge with one Sr(1)O8 hexagonal bipyramid, and  an edgeedge with one La(1)O8 hexagonal bipyramid. The As(1)-O(2) bond length is 1.72 Å. The As(1)-O(3) bond length is 1.73 Å. The As(1)-O(5) bond length is 1.72 Å. The As(1)-O(7) bond length is 1.73 Å. In the second As site, As(2) is bonded to one O(1), one O(4), one O(6), and one O(8) atom to form AsO4 tetrahedra that share corners with two equivalent Sr(1)O8 hexagonal bipyramids, corners with two equivalent La(1)O8 hexagonal bipyramids,  an edgeedge with one Sr(1)O8 hexagonal bipyramid, and  an edgeedge with one La(1)O8 hexagonal bipyramid. The As(2)-O(1) bond length is 1.72 Å. The As(2)-O(4) bond length is 1.73 Å. The As(2)-O(6) bond length is 1.72 Å. The As(2)-O(8) bond length is 1.73 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Sr(1), one La(1), and one As(2) atom.