The compound described by MgEu6WO12 crystallizes in the trigonal R-3 space group. Mg(1) is bonded in an octahedral geometry to six equivalent O(2) atoms. Eu(1) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. W(1) is bonded in an octahedral geometry to six equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Eu(1) and one W(1) atom to form a mixture of distorted edge and corner-sharing OEu3W trigonal pyramids. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to one Mg(1) and three equivalent Eu(1) atoms. is represented by the CIF file [CIF]
data_Eu6MgWO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.712
_cell_length_b   6.712
_cell_length_c   6.711
_cell_angle_alpha   95.562
_cell_angle_beta   95.541
_cell_angle_gamma   95.557
_symmetry_Int_Tables_number   1
_cell_volume   297.775
_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
  Eu  Eu0  1  0.413  0.902  0.718  1.0
  Eu  Eu1  1  0.282  0.587  0.098  1.0
  Eu  Eu2  1  0.098  0.282  0.587  1.0
  Eu  Eu3  1  0.902  0.718  0.413  1.0
  Eu  Eu4  1  0.718  0.413  0.902  1.0
  Eu  Eu5  1  0.587  0.098  0.282  1.0
  Mg  Mg6  1  0.500  0.500  0.500  1.0
  W  W7  1  1.000  1.000  1.000  1.0
  O  O8  1  0.042  0.937  0.715  1.0
  O  O9  1  0.285  0.958  0.063  1.0
  O  O10  1  0.198  0.560  0.421  1.0
  O  O11  1  0.579  0.802  0.441  1.0
  O  O12  1  0.063  0.285  0.958  1.0
  O  O13  1  0.440  0.579  0.802  1.0
  O  O14  1  0.560  0.421  0.198  1.0
  O  O15  1  0.937  0.715  0.042  1.0
  O  O16  1  0.421  0.198  0.560  1.0
  O  O17  1  0.802  0.440  0.579  1.0
  O  O18  1  0.715  0.042  0.937  1.0
  O  O19  1  0.958  0.063  0.285  1.0
[/CIF]
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The compound described by MgEu6WO12 crystallizes in the trigonal R-3 space group. Mg(1) is bonded in an octahedral geometry to six equivalent O(2) atoms. Eu(1) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. W(1) is bonded in an octahedral geometry to six equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Eu(1) and one W(1) atom to form a mixture of distorted edge and corner-sharing OEu3W trigonal pyramids. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to one Mg(1) and three equivalent Eu(1) atoms. is represented by the CIF file [CIF]
data_Eu6MgWO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.712
_cell_length_b   6.712
_cell_length_c   6.711
_cell_angle_alpha   95.562
_cell_angle_beta   95.541
_cell_angle_gamma   95.557
_symmetry_Int_Tables_number   1
_cell_volume   297.775
_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
  Eu  Eu0  1  0.413  0.902  0.718  1.0
  Eu  Eu1  1  0.282  0.587  0.098  1.0
  Eu  Eu2  1  0.098  0.282  0.587  1.0
  Eu  Eu3  1  0.902  0.718  0.413  1.0
  Eu  Eu4  1  0.718  0.413  0.902  1.0
  Eu  Eu5  1  0.587  0.098  0.282  1.0
  Mg  Mg6  1  0.500  0.500  0.500  1.0
  W  W7  1  1.000  1.000  1.000  1.0
  O  O8  1  0.042  0.937  0.715  1.0
  O  O9  1  0.285  0.958  0.063  1.0
  O  O10  1  0.198  0.560  0.421  1.0
  O  O11  1  0.579  0.802  0.441  1.0
  O  O12  1  0.063  0.285  0.958  1.0
  O  O13  1  0.440  0.579  0.802  1.0
  O  O14  1  0.560  0.421  0.198  1.0
  O  O15  1  0.937  0.715  0.042  1.0
  O  O16  1  0.421  0.198  0.560  1.0
  O  O17  1  0.802  0.440  0.579  1.0
  O  O18  1  0.715  0.042  0.937  1.0
  O  O19  1  0.958  0.063  0.285  1.0
[/CIF]
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