The material described by MgWTe3O12 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(11), one O(4), one O(7), one O(8), and one O(9) atom to form distorted MgO6 pentagonal pyramids that share  a cornercorner with one Te(1)O6 octahedra, corners with two equivalent Te(2)O6 octahedra,  an edgeedge with one W(1)O6 octahedra, edges with two equivalent Te(3)O6 octahedra, and  a faceface with one Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-60°. W(1) is bonded to one O(10), one O(11), one O(2), one O(3), one O(5), and one O(8) atom to form WO6 octahedra that share corners with two equivalent Te(1)O6 octahedra, corners with four equivalent Te(2)O6 octahedra, and  an edgeedge with one Mg(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 27-37°. There are three inequivalent Te sites. In the first Te site, Te(1) is bonded to one O(1), one O(11), one O(12), one O(2), one O(4), and one O(9) atom to form TeO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with four equivalent Te(3)O6 octahedra,  a cornercorner with one Mg(1)O6 pentagonal pyramid, and  a faceface with one Mg(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 30-48°. In the second Te site, Te(2) is bonded to one O(10), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form TeO6 octahedra that share corners with two equivalent Te(3)O6 octahedra, corners with four equivalent W(1)O6 octahedra, and corners with two equivalent Mg(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 27-41°. In the third Te site, Te(3) is bonded to one O(1), one O(12), one O(4), one O(6), one O(7), and one O(9) atom to form TeO6 octahedra that share corners with two equivalent Te(2)O6 octahedra, corners with four equivalent Te(1)O6 octahedra, and edges with two equivalent Mg(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 35-48°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a T-shaped geometry to one Mg(1), one Te(1), and one Te(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one W(1) and one Te(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one W(1) and one Te(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mg(1), one Te(1), and one Te(3) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one W(1) and one Te(2) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Te(2) and one Te(3) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Mg(1), one Te(2), and one Te(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(1), and one Te(2) atom. In the ninth O site, O(9) is bonded in a T-shaped geometry to one Mg(1), one Te(1), and one Te(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one W(1) and one Te(2) atom. In the eleventh O site, O(11) is bonded in a T-shaped geometry to one Mg(1), one W(1), and one Te(1) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Te(1) and one Te(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgTe3WO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.485
_cell_length_b   11.054
_cell_length_c   9.733
_cell_angle_alpha   28.662
_cell_angle_beta   51.814
_cell_angle_gamma   57.151
_symmetry_Int_Tables_number   1
_cell_volume   222.468
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mg  Mg0  1  0.305  0.002  0.282  1.0
  Te  Te1  1  0.501  0.995  0.510  1.0
  Te  Te2  1  0.499  0.504  0.498  1.0
  Te  Te3  1  0.973  0.502  0.019  1.0
  W  W4  1  0.021  0.999  0.991  1.0
  O  O5  1  0.367  0.273  0.163  1.0
  O  O6  1  0.255  0.109  0.640  1.0
  O  O7  1  0.157  0.289  0.759  1.0
  O  O8  1  0.877  0.155  0.273  1.0
  O  O9  1  0.343  0.793  0.150  1.0
  O  O10  1  0.744  0.391  0.375  1.0
  O  O11  1  0.251  0.639  0.593  1.0
  O  O12  1  0.628  0.209  0.855  1.0
  O  O13  1  0.148  0.831  0.701  1.0
  O  O14  1  0.844  0.723  0.220  1.0
  O  O15  1  0.731  0.907  0.329  1.0
  O  O16  1  0.600  0.686  0.872  1.0
[/CIF]
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The material described by MgWTe3O12 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(11), one O(4), one O(7), one O(8), and one O(9) atom to form distorted MgO6 pentagonal pyramids that share  a cornercorner with one Te(1)O6 octahedra, corners with two equivalent Te(2)O6 octahedra,  an edgeedge with one W(1)O6 octahedra, edges with two equivalent Te(3)O6 octahedra, and  a faceface with one Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-60°. W(1) is bonded to one O(10), one O(11), one O(2), one O(3), one O(5), and one O(8) atom to form WO6 octahedra that share corners with two equivalent Te(1)O6 octahedra, corners with four equivalent Te(2)O6 octahedra, and  an edgeedge with one Mg(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 27-37°. There are three inequivalent Te sites. In the first Te site, Te(1) is bonded to one O(1), one O(11), one O(12), one O(2), one O(4), and one O(9) atom to form TeO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with four equivalent Te(3)O6 octahedra,  a cornercorner with one Mg(1)O6 pentagonal pyramid, and  a faceface with one Mg(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 30-48°. In the second Te site, Te(2) is bonded to one O(10), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form TeO6 octahedra that share corners with two equivalent Te(3)O6 octahedra, corners with four equivalent W(1)O6 octahedra, and corners with two equivalent Mg(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 27-41°. In the third Te site, Te(3) is bonded to one O(1), one O(12), one O(4), one O(6), one O(7), and one O(9) atom to form TeO6 octahedra that share corners with two equivalent Te(2)O6 octahedra, corners with four equivalent Te(1)O6 octahedra, and edges with two equivalent Mg(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 35-48°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a T-shaped geometry to one Mg(1), one Te(1), and one Te(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one W(1) and one Te(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one W(1) and one Te(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mg(1), one Te(1), and one Te(3) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one W(1) and one Te(2) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Te(2) and one Te(3) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Mg(1), one Te(2), and one Te(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(1), and one Te(2) atom. In the ninth O site, O(9) is bonded in a T-shaped geometry to one Mg(1), one Te(1), and one Te(3) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one W(1) and one Te(2) atom. In the eleventh O site, O(11) is bonded in a T-shaped geometry to one Mg(1), one W(1), and one Te(1) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Te(1) and one Te(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgTe3WO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.485
_cell_length_b   11.054
_cell_length_c   9.733
_cell_angle_alpha   28.662
_cell_angle_beta   51.814
_cell_angle_gamma   57.151
_symmetry_Int_Tables_number   1
_cell_volume   222.468
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mg  Mg0  1  0.305  0.002  0.282  1.0
  Te  Te1  1  0.501  0.995  0.510  1.0
  Te  Te2  1  0.499  0.504  0.498  1.0
  Te  Te3  1  0.973  0.502  0.019  1.0
  W  W4  1  0.021  0.999  0.991  1.0
  O  O5  1  0.367  0.273  0.163  1.0
  O  O6  1  0.255  0.109  0.640  1.0
  O  O7  1  0.157  0.289  0.759  1.0
  O  O8  1  0.877  0.155  0.273  1.0
  O  O9  1  0.343  0.793  0.150  1.0
  O  O10  1  0.744  0.391  0.375  1.0
  O  O11  1  0.251  0.639  0.593  1.0
  O  O12  1  0.628  0.209  0.855  1.0
  O  O13  1  0.148  0.831  0.701  1.0
  O  O14  1  0.844  0.723  0.220  1.0
  O  O15  1  0.731  0.907  0.329  1.0
  O  O16  1  0.600  0.686  0.872  1.0
[/CIF]
.