The crystal structure described by MgGa4(WO6)2 crystallizes in the orthorhombic Amm2 space group. Mg(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form distorted MgO4 tetrahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent Ga(1)O6 octahedra, and  an edgeedge with one W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-59°. There are two inequivalent W sites. In the first W site, W(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form WO6 octahedra that share corners with two equivalent Mg(1)O4 tetrahedra, edges with two equivalent Ga(1)O6 octahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. In the second W site, W(2) is bonded to one O(5) and four equivalent O(4) atoms to form distorted WO5 square pyramids that share corners with six equivalent Ga(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-50°. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(1), one O(2), one O(5), one O(6), and two equivalent O(4) atoms to form distorted GaO6 octahedra that share corners with three equivalent W(2)O5 square pyramids,  a cornercorner with one Mg(1)O4 tetrahedra,  an edgeedge with one W(1)O6 octahedra, and  an edgeedge with one Ga(1)O6 octahedra. In the second Ga site, Ga(2) is bonded in a 5-coordinate geometry to one O(6), two equivalent O(3), and two equivalent O(4) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a T-shaped geometry to one Mg(1), one W(1), and one Ga(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Ga(1) atoms. In the third O site, O(3) is bonded to one Mg(1), one W(1), and two equivalent Ga(2) atoms to form a mixture of distorted face and corner-sharing OMgGa2W trigonal pyramids. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one W(2), one Ga(1), and one Ga(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one W(2) and two equivalent Ga(1) atoms. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one W(1), one Ga(1), and one Ga(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgGa4(WO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.177
_cell_length_b   5.177
_cell_length_c   9.041
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   79.666
_symmetry_Int_Tables_number   1
_cell_volume   238.341
_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  0.300  0.300  0.000  1.0
  Ga  Ga1  1  0.013  0.013  0.333  1.0
  Ga  Ga2  1  0.013  0.013  0.667  1.0
  Ga  Ga3  1  0.580  0.580  0.176  1.0
  Ga  Ga4  1  0.580  0.580  0.824  1.0
  W  W5  1  0.965  0.965  0.000  1.0
  W  W6  1  0.547  0.547  0.500  1.0
  O  O7  1  0.144  0.144  0.161  1.0
  O  O8  1  0.144  0.144  0.839  1.0
  O  O9  1  0.141  0.141  0.500  1.0
  O  O10  1  0.316  0.679  0.000  1.0
  O  O11  1  0.314  0.687  0.338  1.0
  O  O12  1  0.314  0.687  0.662  1.0
  O  O13  1  0.687  0.314  0.338  1.0
  O  O14  1  0.687  0.314  0.662  1.0
  O  O15  1  0.679  0.316  0.000  1.0
  O  O16  1  0.771  0.771  0.500  1.0
  O  O17  1  0.812  0.812  0.183  1.0
  O  O18  1  0.812  0.812  0.817  1.0
[/CIF]
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The crystal structure described by MgGa4(WO6)2 crystallizes in the orthorhombic Amm2 space group. Mg(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form distorted MgO4 tetrahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent Ga(1)O6 octahedra, and  an edgeedge with one W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 6-59°. There are two inequivalent W sites. In the first W site, W(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form WO6 octahedra that share corners with two equivalent Mg(1)O4 tetrahedra, edges with two equivalent Ga(1)O6 octahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. In the second W site, W(2) is bonded to one O(5) and four equivalent O(4) atoms to form distorted WO5 square pyramids that share corners with six equivalent Ga(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-50°. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(1), one O(2), one O(5), one O(6), and two equivalent O(4) atoms to form distorted GaO6 octahedra that share corners with three equivalent W(2)O5 square pyramids,  a cornercorner with one Mg(1)O4 tetrahedra,  an edgeedge with one W(1)O6 octahedra, and  an edgeedge with one Ga(1)O6 octahedra. In the second Ga site, Ga(2) is bonded in a 5-coordinate geometry to one O(6), two equivalent O(3), and two equivalent O(4) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a T-shaped geometry to one Mg(1), one W(1), and one Ga(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Ga(1) atoms. In the third O site, O(3) is bonded to one Mg(1), one W(1), and two equivalent Ga(2) atoms to form a mixture of distorted face and corner-sharing OMgGa2W trigonal pyramids. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one W(2), one Ga(1), and one Ga(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one W(2) and two equivalent Ga(1) atoms. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one W(1), one Ga(1), and one Ga(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgGa4(WO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.177
_cell_length_b   5.177
_cell_length_c   9.041
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   79.666
_symmetry_Int_Tables_number   1
_cell_volume   238.341
_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  0.300  0.300  0.000  1.0
  Ga  Ga1  1  0.013  0.013  0.333  1.0
  Ga  Ga2  1  0.013  0.013  0.667  1.0
  Ga  Ga3  1  0.580  0.580  0.176  1.0
  Ga  Ga4  1  0.580  0.580  0.824  1.0
  W  W5  1  0.965  0.965  0.000  1.0
  W  W6  1  0.547  0.547  0.500  1.0
  O  O7  1  0.144  0.144  0.161  1.0
  O  O8  1  0.144  0.144  0.839  1.0
  O  O9  1  0.141  0.141  0.500  1.0
  O  O10  1  0.316  0.679  0.000  1.0
  O  O11  1  0.314  0.687  0.338  1.0
  O  O12  1  0.314  0.687  0.662  1.0
  O  O13  1  0.687  0.314  0.338  1.0
  O  O14  1  0.687  0.314  0.662  1.0
  O  O15  1  0.679  0.316  0.000  1.0
  O  O16  1  0.771  0.771  0.500  1.0
  O  O17  1  0.812  0.812  0.183  1.0
  O  O18  1  0.812  0.812  0.817  1.0
[/CIF]
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