The material described by MgCuAl(WO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form distorted MgO6 octahedra that share corners with two equivalent W(2)O6 octahedra, corners with four equivalent W(1)O6 octahedra, edges with two equivalent Al(1)O6 octahedra, and  a faceface with one W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-64°. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form WO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra, corners with four equivalent Al(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-64°. In the second W site, W(2) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted WO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with four equivalent Al(1)O6 octahedra, edges with two equivalent W(1)O6 octahedra, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-60°. Cu(1) is bonded in a trigonal planar geometry to one O(2), one O(6), and one O(7) atom. Al(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form AlO6 octahedra that share corners with four equivalent W(1)O6 octahedra, corners with four equivalent W(2)O6 octahedra, and edges with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-57°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(1), and one Al(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one W(1), one Cu(1), and one Al(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(1), and one W(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal pyramidal geometry to one Mg(1), one W(1), one W(2), and one Al(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(2), and one Al(1) atom. In the sixth O site, O(6) is bonded in a distorted see-saw-like geometry to one Mg(1), one W(2), one Cu(1), and one Al(1) atom. In the seventh O site, O(7) is bonded in a distorted see-saw-like geometry to one Mg(1), one W(1), one W(2), and one Cu(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Al(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgAlCu(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.184
_cell_length_b   5.776
_cell_length_c   5.757
_cell_angle_alpha   108.545
_cell_angle_beta   118.118
_cell_angle_gamma   89.545
_symmetry_Int_Tables_number   1
_cell_volume   142.080
_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  0.068  0.947  0.013  1.0
  Al  Al1  1  0.603  0.678  0.072  1.0
  Cu  Cu2  1  0.257  0.509  0.319  1.0
  W  W3  1  0.851  0.344  0.573  1.0
  W  W4  1  0.366  0.034  0.607  1.0
  O  O5  1  0.186  0.624  0.860  1.0
  O  O6  1  0.633  0.507  0.318  1.0
  O  O7  1  0.109  0.132  0.788  1.0
  O  O8  1  0.540  0.002  0.340  1.0
  O  O9  1  0.619  0.882  0.857  1.0
  O  O10  1  0.022  0.775  0.283  1.0
  O  O11  1  0.093  0.236  0.370  1.0
  O  O12  1  0.648  0.378  0.816  1.0
[/CIF]
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The material described by MgCuAl(WO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(7) atom to form distorted MgO6 octahedra that share corners with two equivalent W(2)O6 octahedra, corners with four equivalent W(1)O6 octahedra, edges with two equivalent Al(1)O6 octahedra, and  a faceface with one W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-64°. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom to form WO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra, corners with four equivalent Al(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-64°. In the second W site, W(2) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted WO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with four equivalent Al(1)O6 octahedra, edges with two equivalent W(1)O6 octahedra, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-60°. Cu(1) is bonded in a trigonal planar geometry to one O(2), one O(6), and one O(7) atom. Al(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom to form AlO6 octahedra that share corners with four equivalent W(1)O6 octahedra, corners with four equivalent W(2)O6 octahedra, and edges with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-57°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(1), and one Al(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one W(1), one Cu(1), and one Al(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(1), and one W(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal pyramidal geometry to one Mg(1), one W(1), one W(2), and one Al(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(2), and one Al(1) atom. In the sixth O site, O(6) is bonded in a distorted see-saw-like geometry to one Mg(1), one W(2), one Cu(1), and one Al(1) atom. In the seventh O site, O(7) is bonded in a distorted see-saw-like geometry to one Mg(1), one W(1), one W(2), and one Cu(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Al(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgAlCu(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.184
_cell_length_b   5.776
_cell_length_c   5.757
_cell_angle_alpha   108.545
_cell_angle_beta   118.118
_cell_angle_gamma   89.545
_symmetry_Int_Tables_number   1
_cell_volume   142.080
_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  0.068  0.947  0.013  1.0
  Al  Al1  1  0.603  0.678  0.072  1.0
  Cu  Cu2  1  0.257  0.509  0.319  1.0
  W  W3  1  0.851  0.344  0.573  1.0
  W  W4  1  0.366  0.034  0.607  1.0
  O  O5  1  0.186  0.624  0.860  1.0
  O  O6  1  0.633  0.507  0.318  1.0
  O  O7  1  0.109  0.132  0.788  1.0
  O  O8  1  0.540  0.002  0.340  1.0
  O  O9  1  0.619  0.882  0.857  1.0
  O  O10  1  0.022  0.775  0.283  1.0
  O  O11  1  0.093  0.236  0.370  1.0
  O  O12  1  0.648  0.378  0.816  1.0
[/CIF]
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