The material described by Na4Mg(WO4)2 crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 7-coordinate geometry to one Mg(1), one O(1), one O(3), two equivalent O(2), and two equivalent O(4) atoms. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one Mg(1), one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms. Mg(1) is bonded to two equivalent Na(1), two equivalent Na(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted MgNa4O4 tetrahedra that share corners with four equivalent W(2)O4 tetrahedra. There are two inequivalent W sites. In the first W site, W(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. In the second W site, W(2) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form WO4 tetrahedra that share corners with four equivalent Mg(1)Na4O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(1), two equivalent Na(2), and one W(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(2), two equivalent Na(1), and one W(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(2), one Mg(1), and one W(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Na(2), two equivalent Na(1), one Mg(1), and one W(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na4Mg(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.601
_cell_length_b   6.596
_cell_length_c   6.596
_cell_angle_alpha   60.049
_cell_angle_beta   59.977
_cell_angle_gamma   59.977
_symmetry_Int_Tables_number   1
_cell_volume   203.109
_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
  Na  Na0  1  0.019  0.020  0.441  1.0
  Na  Na1  1  0.019  0.441  0.020  1.0
  Na  Na2  1  0.443  0.019  0.019  1.0
  Na  Na3  1  0.018  0.019  0.019  1.0
  Mg  Mg4  1  0.876  0.874  0.874  1.0
  W  W5  1  0.375  0.375  0.375  1.0
  W  W6  1  0.626  0.624  0.624  1.0
  O  O7  1  0.263  0.262  0.713  1.0
  O  O8  1  0.263  0.713  0.262  1.0
  O  O9  1  0.713  0.263  0.263  1.0
  O  O10  1  0.262  0.263  0.263  1.0
  O  O11  1  0.751  0.752  0.246  1.0
  O  O12  1  0.751  0.246  0.752  1.0
  O  O13  1  0.248  0.750  0.750  1.0
  O  O14  1  0.752  0.750  0.750  1.0
[/CIF]
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The material described by Na4Mg(WO4)2 crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 7-coordinate geometry to one Mg(1), one O(1), one O(3), two equivalent O(2), and two equivalent O(4) atoms. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one Mg(1), one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms. Mg(1) is bonded to two equivalent Na(1), two equivalent Na(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted MgNa4O4 tetrahedra that share corners with four equivalent W(2)O4 tetrahedra. There are two inequivalent W sites. In the first W site, W(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. In the second W site, W(2) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form WO4 tetrahedra that share corners with four equivalent Mg(1)Na4O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(1), two equivalent Na(2), and one W(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(2), two equivalent Na(1), and one W(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(2), one Mg(1), and one W(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Na(2), two equivalent Na(1), one Mg(1), and one W(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na4Mg(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.601
_cell_length_b   6.596
_cell_length_c   6.596
_cell_angle_alpha   60.049
_cell_angle_beta   59.977
_cell_angle_gamma   59.977
_symmetry_Int_Tables_number   1
_cell_volume   203.109
_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
  Na  Na0  1  0.019  0.020  0.441  1.0
  Na  Na1  1  0.019  0.441  0.020  1.0
  Na  Na2  1  0.443  0.019  0.019  1.0
  Na  Na3  1  0.018  0.019  0.019  1.0
  Mg  Mg4  1  0.876  0.874  0.874  1.0
  W  W5  1  0.375  0.375  0.375  1.0
  W  W6  1  0.626  0.624  0.624  1.0
  O  O7  1  0.263  0.262  0.713  1.0
  O  O8  1  0.263  0.713  0.262  1.0
  O  O9  1  0.713  0.263  0.263  1.0
  O  O10  1  0.262  0.263  0.263  1.0
  O  O11  1  0.751  0.752  0.246  1.0
  O  O12  1  0.751  0.246  0.752  1.0
  O  O13  1  0.248  0.750  0.750  1.0
  O  O14  1  0.752  0.750  0.750  1.0
[/CIF]
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