The material described by Mg2WPb4TeO12 crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(3), one O(5), one O(7), one O(9), and two equivalent O(2) atoms to form MgO6 octahedra that share corners with two equivalent Te(1)O6 octahedra and corners with four equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-8°. In the second Mg site, Mg(2) is bonded to one O(10), one O(4), one O(6), one O(8), and two equivalent O(1) atoms to form MgO6 octahedra that share corners with two equivalent W(1)O6 octahedra and corners with four equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-8°. W(1) is bonded to one O(3), one O(5), one O(7), one O(9), and two equivalent O(1) atoms to form WO6 octahedra that share corners with two equivalent Mg(2)O6 octahedra and corners with four equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-8°. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(2), one O(6), and one O(7) atom. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(5), and one O(8) atom. Te(1) is bonded to one O(10), one O(4), one O(6), one O(8), and two equivalent O(2) atoms to form TeO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra and corners with four equivalent Mg(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-8°. There are ten inequivalent O sites. In the first O site, O(7) is bonded in a 4-coordinate geometry to one Mg(1), one W(1), and two equivalent Pb(1) atoms. In the second O site, O(8) is bonded in a distorted linear geometry to one Mg(2), two equivalent Pb(2), and one Te(1) atom. In the third O site, O(9) is bonded in a linear geometry to one Mg(1) and one W(1) atom. In the fourth O site, O(10) is bonded in a linear geometry to one Mg(2), two equivalent Pb(1), and one Te(1) atom. In the fifth O site, O(1) is bonded in a distorted linear geometry to one Mg(2), one W(1), one Pb(1), and one Pb(2) atom. In the sixth O site, O(2) is bonded in a distorted linear geometry to one Mg(1), one Pb(1), one Pb(2), and one Te(1) atom. In the seventh O site, O(3) is bonded in a linear geometry to one Mg(1) and one W(1) atom. In the eighth O site, O(4) is bonded in a linear geometry to one Mg(2) and one Te(1) atom. In the ninth O site, O(5) is bonded in a distorted linear geometry to one Mg(1), one W(1), and two equivalent Pb(2) atoms. In the tenth O site, O(6) is bonded in a distorted linear geometry to one Mg(2), two equivalent Pb(1), and one Te(1) atom. is represented by the CIF file [CIF]
data_Mg2TePb4WO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.732
_cell_length_b   8.081
_cell_length_c   11.480
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   531.717
_cell_formula_units_Z   2
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  0.995  0.500  0.376  1.0
  Mg  Mg1  1  0.005  0.500  0.876  1.0
  Mg  Mg2  1  0.508  0.000  0.623  1.0
  Mg  Mg3  1  0.492  0.000  0.123  1.0
  Te  Te4  1  0.003  0.000  0.877  1.0
  Te  Te5  1  0.997  0.000  0.377  1.0
  Pb  Pb6  1  0.974  0.252  0.133  1.0
  Pb  Pb7  1  0.026  0.748  0.633  1.0
  Pb  Pb8  1  0.522  0.753  0.868  1.0
  Pb  Pb9  1  0.478  0.247  0.368  1.0
  Pb  Pb10  1  0.522  0.247  0.868  1.0
  Pb  Pb11  1  0.478  0.753  0.368  1.0
  Pb  Pb12  1  0.974  0.748  0.133  1.0
  Pb  Pb13  1  0.026  0.252  0.633  1.0
  W  W14  1  0.494  0.500  0.122  1.0
  W  W15  1  0.506  0.500  0.622  1.0
  O  O16  1  0.508  0.742  0.129  1.0
  O  O17  1  0.492  0.258  0.629  1.0
  O  O18  1  0.992  0.240  0.871  1.0
  O  O19  1  0.008  0.760  0.371  1.0
  O  O20  1  0.992  0.760  0.871  1.0
  O  O21  1  0.008  0.240  0.371  1.0
  O  O22  1  0.508  0.258  0.129  1.0
  O  O23  1  0.492  0.742  0.629  1.0
  O  O24  1  0.252  0.500  0.008  1.0
  O  O25  1  0.748  0.500  0.508  1.0
  O  O26  1  0.250  0.000  0.991  1.0
  O  O27  1  0.750  0.000  0.491  1.0
  O  O28  1  0.271  0.500  0.250  1.0
  O  O29  1  0.729  0.500  0.750  1.0
  O  O30  1  0.228  0.000  0.750  1.0
  O  O31  1  0.772  0.000  0.250  1.0
  O  O32  1  0.757  0.500  0.238  1.0
  O  O33  1  0.243  0.500  0.738  1.0
  O  O34  1  0.745  0.000  0.763  1.0
  O  O35  1  0.255  0.000  0.263  1.0
  O  O36  1  0.734  0.500  0.001  1.0
  O  O37  1  0.266  0.500  0.501  1.0
  O  O38  1  0.768  0.000  0.999  1.0
  O  O39  1  0.232  0.000  0.499  1.0
[/CIF]
.
The material described by Mg2WPb4TeO12 crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(3), one O(5), one O(7), one O(9), and two equivalent O(2) atoms to form MgO6 octahedra that share corners with two equivalent Te(1)O6 octahedra and corners with four equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-8°. In the second Mg site, Mg(2) is bonded to one O(10), one O(4), one O(6), one O(8), and two equivalent O(1) atoms to form MgO6 octahedra that share corners with two equivalent W(1)O6 octahedra and corners with four equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-8°. W(1) is bonded to one O(3), one O(5), one O(7), one O(9), and two equivalent O(1) atoms to form WO6 octahedra that share corners with two equivalent Mg(2)O6 octahedra and corners with four equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-8°. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(2), one O(6), and one O(7) atom. In the second Pb site, Pb(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(5), and one O(8) atom. Te(1) is bonded to one O(10), one O(4), one O(6), one O(8), and two equivalent O(2) atoms to form TeO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra and corners with four equivalent Mg(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-8°. There are ten inequivalent O sites. In the first O site, O(7) is bonded in a 4-coordinate geometry to one Mg(1), one W(1), and two equivalent Pb(1) atoms. In the second O site, O(8) is bonded in a distorted linear geometry to one Mg(2), two equivalent Pb(2), and one Te(1) atom. In the third O site, O(9) is bonded in a linear geometry to one Mg(1) and one W(1) atom. In the fourth O site, O(10) is bonded in a linear geometry to one Mg(2), two equivalent Pb(1), and one Te(1) atom. In the fifth O site, O(1) is bonded in a distorted linear geometry to one Mg(2), one W(1), one Pb(1), and one Pb(2) atom. In the sixth O site, O(2) is bonded in a distorted linear geometry to one Mg(1), one Pb(1), one Pb(2), and one Te(1) atom. In the seventh O site, O(3) is bonded in a linear geometry to one Mg(1) and one W(1) atom. In the eighth O site, O(4) is bonded in a linear geometry to one Mg(2) and one Te(1) atom. In the ninth O site, O(5) is bonded in a distorted linear geometry to one Mg(1), one W(1), and two equivalent Pb(2) atoms. In the tenth O site, O(6) is bonded in a distorted linear geometry to one Mg(2), two equivalent Pb(1), and one Te(1) atom. is represented by the CIF file [CIF]
data_Mg2TePb4WO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.732
_cell_length_b   8.081
_cell_length_c   11.480
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   531.717
_cell_formula_units_Z   2
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  0.995  0.500  0.376  1.0
  Mg  Mg1  1  0.005  0.500  0.876  1.0
  Mg  Mg2  1  0.508  0.000  0.623  1.0
  Mg  Mg3  1  0.492  0.000  0.123  1.0
  Te  Te4  1  0.003  0.000  0.877  1.0
  Te  Te5  1  0.997  0.000  0.377  1.0
  Pb  Pb6  1  0.974  0.252  0.133  1.0
  Pb  Pb7  1  0.026  0.748  0.633  1.0
  Pb  Pb8  1  0.522  0.753  0.868  1.0
  Pb  Pb9  1  0.478  0.247  0.368  1.0
  Pb  Pb10  1  0.522  0.247  0.868  1.0
  Pb  Pb11  1  0.478  0.753  0.368  1.0
  Pb  Pb12  1  0.974  0.748  0.133  1.0
  Pb  Pb13  1  0.026  0.252  0.633  1.0
  W  W14  1  0.494  0.500  0.122  1.0
  W  W15  1  0.506  0.500  0.622  1.0
  O  O16  1  0.508  0.742  0.129  1.0
  O  O17  1  0.492  0.258  0.629  1.0
  O  O18  1  0.992  0.240  0.871  1.0
  O  O19  1  0.008  0.760  0.371  1.0
  O  O20  1  0.992  0.760  0.871  1.0
  O  O21  1  0.008  0.240  0.371  1.0
  O  O22  1  0.508  0.258  0.129  1.0
  O  O23  1  0.492  0.742  0.629  1.0
  O  O24  1  0.252  0.500  0.008  1.0
  O  O25  1  0.748  0.500  0.508  1.0
  O  O26  1  0.250  0.000  0.991  1.0
  O  O27  1  0.750  0.000  0.491  1.0
  O  O28  1  0.271  0.500  0.250  1.0
  O  O29  1  0.729  0.500  0.750  1.0
  O  O30  1  0.228  0.000  0.750  1.0
  O  O31  1  0.772  0.000  0.250  1.0
  O  O32  1  0.757  0.500  0.238  1.0
  O  O33  1  0.243  0.500  0.738  1.0
  O  O34  1  0.745  0.000  0.763  1.0
  O  O35  1  0.255  0.000  0.263  1.0
  O  O36  1  0.734  0.500  0.001  1.0
  O  O37  1  0.266  0.500  0.501  1.0
  O  O38  1  0.768  0.000  0.999  1.0
  O  O39  1  0.232  0.000  0.499  1.0
[/CIF]
.