K2(TeO4)3 crystallizes in the orthorhombic Fdd2 space group. K(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), one O(5), one O(6), two equivalent O(1), and two equivalent O(2) atoms. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(6) atoms to form corner-sharing TeO6 octahedra. The corner-sharing octahedral tilt angles range from 48-50°. In the second Te site, Te(2) is bonded to one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form a mixture of edge and corner-sharing TeO6 octahedra. The corner-sharing octahedral tilt angles range from 48-50°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one Te(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent K(1) and one Te(2) atom. In the third O site, O(3) is bonded in a distorted water-like geometry to one K(1) and one Te(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one K(1) and two equivalent Te(2) atoms. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Te(1), and one Te(2) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one K(1), one Te(1), and one Te(2) atom.
K2(TeO4)3 crystallizes in the orthorhombic Fdd2 space group. K(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), one O(5), one O(6), two equivalent O(1), and two equivalent O(2) atoms. The K(1)-O(3) bond length is 2.89 Å. The K(1)-O(4) bond length is 2.84 Å. The K(1)-O(5) bond length is 2.88 Å. The K(1)-O(6) bond length is 3.09 Å. There is one shorter (3.00 Å) and one longer (3.12 Å) K(1)-O(1) bond length. There is one shorter (2.72 Å) and one longer (3.05 Å) K(1)-O(2) bond length. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent O(1), two equivalent O(5), and two equivalent O(6) atoms to form corner-sharing TeO6 octahedra. The corner-sharing octahedral tilt angles range from 48-50°. Both Te(1)-O(1) bond lengths are 1.90 Å. Both Te(1)-O(5) bond lengths are 2.01 Å. Both Te(1)-O(6) bond lengths are 1.98 Å. In the second Te site, Te(2) is bonded to one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form a mixture of edge and corner-sharing TeO6 octahedra. The corner-sharing octahedral tilt angles range from 48-50°. The Te(2)-O(2) bond length is 1.88 Å. The Te(2)-O(3) bond length is 1.91 Å. The Te(2)-O(5) bond length is 2.03 Å. The Te(2)-O(6) bond length is 1.99 Å. There is one shorter (1.98 Å) and one longer (2.01 Å) Te(2)-O(4) bond length. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1) and one Te(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent K(1) and one Te(2) atom. In the third O site, O(3) is bonded in a distorted water-like geometry to one K(1) and one Te(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one K(1) and two equivalent Te(2) atoms. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Te(1), and one Te(2) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one K(1), one Te(1), and one Te(2) atom.