Te2(PO4)3 crystallizes in the trigonal R-3 space group. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with two equivalent Te(1)O6 octahedra and corners with two equivalent Te(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 31-52°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to three equivalent O(3) and three equivalent O(4) atoms to form distorted TeO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra. In the second Te site, Te(2) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form TeO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(2) is bonded in a bent 150 degrees geometry to one P(1) and one Te(2) atom. In the second O site, O(3) is bonded in a bent 120 degrees geometry to one P(1) and one Te(1) atom. In the third O site, O(4) is bonded in a distorted single-bond geometry to one P(1) and one Te(1) atom. In the fourth O site, O(1) is bonded in a distorted bent 150 degrees geometry to one P(1) and one Te(2) atom.
Te2(PO4)3 crystallizes in the trigonal R-3 space group. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with two equivalent Te(1)O6 octahedra and corners with two equivalent Te(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 31-52°. The P(1)-O(1) bond length is 1.56 Å. The P(1)-O(2) bond length is 1.54 Å. The P(1)-O(3) bond length is 1.55 Å. The P(1)-O(4) bond length is 1.50 Å. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to three equivalent O(3) and three equivalent O(4) atoms to form distorted TeO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra. All Te(1)-O(3) bond lengths are 2.00 Å. All Te(1)-O(4) bond lengths are 2.34 Å. In the second Te site, Te(2) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form TeO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra. All Te(2)-O(1) bond lengths are 2.00 Å. All Te(2)-O(2) bond lengths are 2.06 Å. There are four inequivalent O sites. In the first O site, O(2) is bonded in a bent 150 degrees geometry to one P(1) and one Te(2) atom. In the second O site, O(3) is bonded in a bent 120 degrees geometry to one P(1) and one Te(1) atom. In the third O site, O(4) is bonded in a distorted single-bond geometry to one P(1) and one Te(1) atom. In the fourth O site, O(1) is bonded in a distorted bent 150 degrees geometry to one P(1) and one Te(2) atom.