The crystal structure described by Mg2La3(WO6)2 crystallizes in the tetragonal P-4m2 space group. Mg(1) is bonded to one O(1), one O(2), and four equivalent O(3) atoms to form MgO6 octahedra that share corners with six equivalent W(1)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-10°. There are three inequivalent La sites. In the first La site, La(1) is bonded to four equivalent O(1) and eight equivalent O(3) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra, faces with four equivalent La(2)O12 cuboctahedra, faces with four equivalent Mg(1)O6 octahedra, and faces with four equivalent W(1)O6 octahedra. In the second La site, La(2) is bonded to four equivalent O(1) and eight equivalent O(3) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(2)O12 cuboctahedra, corners with eight equivalent La(3)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with four equivalent Mg(1)O6 octahedra, and faces with four equivalent W(1)O6 octahedra. In the third La site, La(3) is bonded to four equivalent O(2) and eight equivalent O(3) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(3)O12 cuboctahedra, corners with eight equivalent La(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with four equivalent Mg(1)O6 octahedra, and faces with four equivalent W(1)O6 octahedra. W(1) is bonded to one O(1), one O(2), and four equivalent O(3) atoms to form WO6 octahedra that share corners with six equivalent Mg(1)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-10°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Mg(1), two equivalent La(1), two equivalent La(2), and one W(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Mg(1), two equivalent La(3), and one W(1) atom. In the third O site, O(3) is bonded to one Mg(1), one La(1), one La(2), one La(3), and one W(1) atom to form a mixture of distorted face, corner, and edge-sharing OLa3MgW square pyramids. is represented by the CIF file [CIF]
data_La3Mg2(WO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.645
_cell_length_b   5.645
_cell_length_c   7.916
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   252.271
_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
  La  La0  1  0.000  0.000  0.000  1.0
  La  La1  1  0.500  0.500  0.000  1.0
  La  La2  1  0.000  0.000  0.500  1.0
  Mg  Mg3  1  0.500  0.000  0.747  1.0
  Mg  Mg4  1  0.000  0.500  0.253  1.0
  W  W5  1  0.500  0.000  0.257  1.0
  W  W6  1  0.000  0.500  0.743  1.0
  O  O7  1  0.500  0.000  0.005  1.0
  O  O8  1  0.000  0.500  0.995  1.0
  O  O9  1  0.500  0.000  0.494  1.0
  O  O10  1  0.000  0.500  0.506  1.0
  O  O11  1  0.765  0.243  0.765  1.0
  O  O12  1  0.235  0.757  0.765  1.0
  O  O13  1  0.243  0.765  0.235  1.0
  O  O14  1  0.757  0.235  0.235  1.0
  O  O15  1  0.765  0.757  0.765  1.0
  O  O16  1  0.235  0.243  0.765  1.0
  O  O17  1  0.757  0.765  0.235  1.0
  O  O18  1  0.243  0.235  0.235  1.0
[/CIF]
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The crystal structure described by Mg2La3(WO6)2 crystallizes in the tetragonal P-4m2 space group. Mg(1) is bonded to one O(1), one O(2), and four equivalent O(3) atoms to form MgO6 octahedra that share corners with six equivalent W(1)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-10°. There are three inequivalent La sites. In the first La site, La(1) is bonded to four equivalent O(1) and eight equivalent O(3) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, faces with two equivalent La(3)O12 cuboctahedra, faces with four equivalent La(2)O12 cuboctahedra, faces with four equivalent Mg(1)O6 octahedra, and faces with four equivalent W(1)O6 octahedra. In the second La site, La(2) is bonded to four equivalent O(1) and eight equivalent O(3) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(2)O12 cuboctahedra, corners with eight equivalent La(3)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with four equivalent Mg(1)O6 octahedra, and faces with four equivalent W(1)O6 octahedra. In the third La site, La(3) is bonded to four equivalent O(2) and eight equivalent O(3) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(3)O12 cuboctahedra, corners with eight equivalent La(2)O12 cuboctahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with four equivalent Mg(1)O6 octahedra, and faces with four equivalent W(1)O6 octahedra. W(1) is bonded to one O(1), one O(2), and four equivalent O(3) atoms to form WO6 octahedra that share corners with six equivalent Mg(1)O6 octahedra, faces with two equivalent La(1)O12 cuboctahedra, faces with two equivalent La(2)O12 cuboctahedra, and faces with two equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-10°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Mg(1), two equivalent La(1), two equivalent La(2), and one W(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Mg(1), two equivalent La(3), and one W(1) atom. In the third O site, O(3) is bonded to one Mg(1), one La(1), one La(2), one La(3), and one W(1) atom to form a mixture of distorted face, corner, and edge-sharing OLa3MgW square pyramids. is represented by the CIF file [CIF]
data_La3Mg2(WO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.645
_cell_length_b   5.645
_cell_length_c   7.916
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   252.271
_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
  La  La0  1  0.000  0.000  0.000  1.0
  La  La1  1  0.500  0.500  0.000  1.0
  La  La2  1  0.000  0.000  0.500  1.0
  Mg  Mg3  1  0.500  0.000  0.747  1.0
  Mg  Mg4  1  0.000  0.500  0.253  1.0
  W  W5  1  0.500  0.000  0.257  1.0
  W  W6  1  0.000  0.500  0.743  1.0
  O  O7  1  0.500  0.000  0.005  1.0
  O  O8  1  0.000  0.500  0.995  1.0
  O  O9  1  0.500  0.000  0.494  1.0
  O  O10  1  0.000  0.500  0.506  1.0
  O  O11  1  0.765  0.243  0.765  1.0
  O  O12  1  0.235  0.757  0.765  1.0
  O  O13  1  0.243  0.765  0.235  1.0
  O  O14  1  0.757  0.235  0.235  1.0
  O  O15  1  0.765  0.757  0.765  1.0
  O  O16  1  0.235  0.243  0.765  1.0
  O  O17  1  0.757  0.765  0.235  1.0
  O  O18  1  0.243  0.235  0.235  1.0
[/CIF]
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