Hf(TeSe3)2 crystallizes in the monoclinic P2_1/c space group. Hf(1) is bonded in an octahedral geometry to two equivalent Se(1), two equivalent Se(2), and two equivalent Se(3) atoms. Te(1) is bonded in a trigonal non-coplanar geometry to one Se(1), one Se(2), and one Se(3) atom. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a water-like geometry to one Hf(1) and one Te(1) atom. In the second Se site, Se(2) is bonded in a bent 120 degrees geometry to one Hf(1) and one Te(1) atom. In the third Se site, Se(3) is bonded in a bent 120 degrees geometry to one Hf(1) and one Te(1) atom.
Hf(TeSe3)2 crystallizes in the monoclinic P2_1/c space group. Hf(1) is bonded in an octahedral geometry to two equivalent Se(1), two equivalent Se(2), and two equivalent Se(3) atoms. Both Hf(1)-Se(1) bond lengths are 2.70 Å. Both Hf(1)-Se(2) bond lengths are 2.65 Å. Both Hf(1)-Se(3) bond lengths are 2.68 Å. Te(1) is bonded in a trigonal non-coplanar geometry to one Se(1), one Se(2), and one Se(3) atom. The Te(1)-Se(1) bond length is 2.53 Å. The Te(1)-Se(2) bond length is 2.64 Å. The Te(1)-Se(3) bond length is 2.56 Å. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a water-like geometry to one Hf(1) and one Te(1) atom. In the second Se site, Se(2) is bonded in a bent 120 degrees geometry to one Hf(1) and one Te(1) atom. In the third Se site, Se(3) is bonded in a bent 120 degrees geometry to one Hf(1) and one Te(1) atom.