K3Te(PO7)2 crystallizes in the triclinic P-1 space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(13), one O(14), one O(3), and two equivalent O(2) atoms. In the second K site, K(2) is bonded to one O(12), one O(4), one O(5), two equivalent O(6), and two equivalent O(8) atoms to form distorted KO7 pentagonal bipyramids that share corners with two equivalent Te(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra,  an edgeedge with one Te(1)O6 octahedra, and edges with two equivalent K(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 36-42°. In the third K site, K(3) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(14), one O(3), one O(4), and one O(9) atom. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(7), one O(8), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent K(2)O7 pentagonal bipyramids and  a cornercorner with one P(2)O4 tetrahedra. In the second P site, P(2) is bonded to one O(10), one O(11), one O(12), and one O(13) atom to form PO4 tetrahedra that share  a cornercorner with one K(2)O7 pentagonal bipyramid and  a cornercorner with one P(1)O4 tetrahedra. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form TeO6 octahedra that share corners with four equivalent K(2)O7 pentagonal bipyramids and edges with two equivalent K(2)O7 pentagonal bipyramids. In the second Te site, Te(2) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one K(3), and one Te(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent K(1) and one Te(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one K(3), and one Te(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one K(2), one K(3), and one Te(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one K(2) and one Te(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent K(2) and one Te(1) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one P(1) and one O(14) atom. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to two equivalent K(2) and one P(1) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to one K(3) and one P(1) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one K(3), one P(1), and one P(2) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one K(1), one K(3), and one P(2) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one K(2), one K(3), and one P(2) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one K(1) and one P(2) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one K(1), one K(3), and one O(7) atom.
K3Te(PO7)2 crystallizes in the triclinic P-1 space group. There are three inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(13), one O(14), one O(3), and two equivalent O(2) atoms. The K(1)-O(1) bond length is 2.90 Å. The K(1)-O(11) bond length is 2.77 Å. The K(1)-O(13) bond length is 2.81 Å. The K(1)-O(14) bond length is 3.18 Å. The K(1)-O(3) bond length is 2.85 Å. There is one shorter (2.81 Å) and one longer (3.07 Å) K(1)-O(2) bond length. In the second K site, K(2) is bonded to one O(12), one O(4), one O(5), two equivalent O(6), and two equivalent O(8) atoms to form distorted KO7 pentagonal bipyramids that share corners with two equivalent Te(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra,  an edgeedge with one Te(1)O6 octahedra, and edges with two equivalent K(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 36-42°. The K(2)-O(12) bond length is 3.02 Å. The K(2)-O(4) bond length is 2.85 Å. The K(2)-O(5) bond length is 2.80 Å. There is one shorter (2.88 Å) and one longer (2.95 Å) K(2)-O(6) bond length. There is one shorter (2.70 Å) and one longer (2.86 Å) K(2)-O(8) bond length. In the third K site, K(3) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(14), one O(3), one O(4), and one O(9) atom. The K(3)-O(1) bond length is 2.79 Å. The K(3)-O(10) bond length is 3.20 Å. The K(3)-O(11) bond length is 2.89 Å. The K(3)-O(12) bond length is 2.97 Å. The K(3)-O(14) bond length is 3.12 Å. The K(3)-O(3) bond length is 2.89 Å. The K(3)-O(4) bond length is 2.80 Å. The K(3)-O(9) bond length is 2.67 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(7), one O(8), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent K(2)O7 pentagonal bipyramids and  a cornercorner with one P(2)O4 tetrahedra. The P(1)-O(10) bond length is 1.63 Å. The P(1)-O(7) bond length is 1.57 Å. The P(1)-O(8) bond length is 1.52 Å. The P(1)-O(9) bond length is 1.51 Å. In the second P site, P(2) is bonded to one O(10), one O(11), one O(12), and one O(13) atom to form PO4 tetrahedra that share  a cornercorner with one K(2)O7 pentagonal bipyramid and  a cornercorner with one P(1)O4 tetrahedra. The P(2)-O(10) bond length is 1.67 Å. The P(2)-O(11) bond length is 1.52 Å. The P(2)-O(12) bond length is 1.52 Å. The P(2)-O(13) bond length is 1.52 Å. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form TeO6 octahedra that share corners with four equivalent K(2)O7 pentagonal bipyramids and edges with two equivalent K(2)O7 pentagonal bipyramids. Both Te(1)-O(4) bond lengths are 1.92 Å. Both Te(1)-O(5) bond lengths are 1.93 Å. Both Te(1)-O(6) bond lengths are 1.93 Å. In the second Te site, Te(2) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Both Te(2)-O(1) bond lengths are 1.93 Å. Both Te(2)-O(2) bond lengths are 1.93 Å. Both Te(2)-O(3) bond lengths are 1.93 Å. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one K(3), and one Te(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent K(1) and one Te(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one K(3), and one Te(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one K(2), one K(3), and one Te(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one K(2) and one Te(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent K(2) and one Te(1) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one P(1) and one O(14) atom. The O(7)-O(14) bond length is 1.99 Å. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to two equivalent K(2) and one P(1) atom. In the ninth O site, O(9) is bonded in a distorted linear geometry to one K(3) and one P(1) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one K(3), one P(1), and one P(2) atom. In the eleventh O site, O(11) is bonded in a distorted single-bond geometry to one K(1), one K(3), and one P(2) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one K(2), one K(3), and one P(2) atom. In the thirteenth O site, O(13) is bonded in a distorted single-bond geometry to one K(1) and one P(2) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one K(1), one K(3), and one O(7) atom.