The structure described by MgFe2(WO4)2 crystallizes in the monoclinic P2 space group. Mg(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form MgO6 octahedra that share corners with four equivalent Fe(2)O6 octahedra, edges with two equivalent W(1)O6 octahedra, edges with two equivalent W(2)O6 octahedra, and faces with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-49°. There are two inequivalent W sites. In the first W site, W(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form WO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-49°. In the second W site, W(2) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form WO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-53°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form distorted FeO6 octahedra that share corners with four equivalent W(1)O6 octahedra, corners with four equivalent W(2)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and faces with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-52°. In the second Fe site, Fe(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form FeO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra, corners with four equivalent W(1)O6 octahedra, corners with four equivalent W(2)O6 octahedra, and edges with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-53°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one W(2), one Fe(1), and one Fe(2) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one W(1), one Fe(1), and one Fe(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Fe(2) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Mg(1), one W(1), one W(2), and one Fe(1) atom. is represented by the CIF file [CIF]
data_MgFe2(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.880
_cell_length_b   5.183
_cell_length_c   5.922
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   88.490
_symmetry_Int_Tables_number   1
_cell_volume   149.739
_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  0.000  0.750  0.388  1.0
  Fe  Fe1  1  0.500  0.750  0.346  1.0
  Fe  Fe2  1  0.500  0.250  0.630  1.0
  W  W3  1  0.000  0.750  0.859  1.0
  W  W4  1  0.000  0.250  0.145  1.0
  O  O5  1  0.746  0.415  0.381  1.0
  O  O6  1  0.254  0.085  0.381  1.0
  O  O7  1  0.254  0.587  0.623  1.0
  O  O8  1  0.746  0.913  0.623  1.0
  O  O9  1  0.779  0.434  0.877  1.0
  O  O10  1  0.221  0.066  0.877  1.0
  O  O11  1  0.221  0.590  0.123  1.0
  O  O12  1  0.779  0.910  0.123  1.0
[/CIF]
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The structure described by MgFe2(WO4)2 crystallizes in the monoclinic P2 space group. Mg(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form MgO6 octahedra that share corners with four equivalent Fe(2)O6 octahedra, edges with two equivalent W(1)O6 octahedra, edges with two equivalent W(2)O6 octahedra, and faces with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-49°. There are two inequivalent W sites. In the first W site, W(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form WO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-49°. In the second W site, W(2) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form WO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-53°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form distorted FeO6 octahedra that share corners with four equivalent W(1)O6 octahedra, corners with four equivalent W(2)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, and faces with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-52°. In the second Fe site, Fe(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form FeO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra, corners with four equivalent W(1)O6 octahedra, corners with four equivalent W(2)O6 octahedra, and edges with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-53°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one W(2), one Fe(1), and one Fe(2) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one W(1), one Fe(1), and one Fe(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Fe(2) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Mg(1), one W(1), one W(2), and one Fe(1) atom. is represented by the CIF file [CIF]
data_MgFe2(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.880
_cell_length_b   5.183
_cell_length_c   5.922
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   88.490
_symmetry_Int_Tables_number   1
_cell_volume   149.739
_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  0.000  0.750  0.388  1.0
  Fe  Fe1  1  0.500  0.750  0.346  1.0
  Fe  Fe2  1  0.500  0.250  0.630  1.0
  W  W3  1  0.000  0.750  0.859  1.0
  W  W4  1  0.000  0.250  0.145  1.0
  O  O5  1  0.746  0.415  0.381  1.0
  O  O6  1  0.254  0.085  0.381  1.0
  O  O7  1  0.254  0.587  0.623  1.0
  O  O8  1  0.746  0.913  0.623  1.0
  O  O9  1  0.779  0.434  0.877  1.0
  O  O10  1  0.221  0.066  0.877  1.0
  O  O11  1  0.221  0.590  0.123  1.0
  O  O12  1  0.779  0.910  0.123  1.0
[/CIF]
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