The structure described by Mg6YW crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Y(1), and two equivalent W(1) atoms to form distorted MgY2Mg8W2 cuboctahedra that share corners with four equivalent Mg(2)Y2Mg10 cuboctahedra, corners with ten equivalent Mg(1)Y2Mg8W2 cuboctahedra, edges with two equivalent Mg(2)Y2Mg10 cuboctahedra, edges with two equivalent Mg(1)Y2Mg8W2 cuboctahedra, edges with four equivalent W(1)Y2Mg10 cuboctahedra, faces with two equivalent Mg(2)Y2Mg10 cuboctahedra, faces with two equivalent W(1)Y2Mg10 cuboctahedra, and faces with four equivalent Mg(1)Y2Mg8W2 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Y(1) atoms to form distorted MgY2Mg10 cuboctahedra that share corners with six equivalent Mg(2)Y2Mg10 cuboctahedra, corners with eight equivalent Mg(1)Y2Mg8W2 cuboctahedra, edges with four equivalent Mg(1)Y2Mg8W2 cuboctahedra, faces with two equivalent Mg(2)Y2Mg10 cuboctahedra, faces with four equivalent Mg(1)Y2Mg8W2 cuboctahedra, and faces with six equivalent W(1)Y2Mg10 cuboctahedra. In the third Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Y(1), and two equivalent W(1) atoms. In the fourth Mg site, Mg(4) is bonded in a distorted linear geometry to two equivalent Mg(2), four equivalent Mg(1), four equivalent Mg(3), and two equivalent W(1) atoms. Y(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Mg(2), four equivalent Mg(1), four equivalent Mg(3), and two equivalent W(1) atoms. W(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Y(1) atoms to form WY2Mg10 cuboctahedra that share corners with six equivalent W(1)Y2Mg10 cuboctahedra, edges with eight equivalent Mg(1)Y2Mg8W2 cuboctahedra, faces with two equivalent W(1)Y2Mg10 cuboctahedra, faces with four equivalent Mg(1)Y2Mg8W2 cuboctahedra, and faces with six equivalent Mg(2)Y2Mg10 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_YMg6W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.025
_cell_length_b   6.248
_cell_length_c   6.441
_cell_angle_alpha   119.013
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   176.823
_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  1.000  0.337  0.150  1.0
  Mg  Mg1  1  1.000  0.813  0.150  1.0
  Mg  Mg2  1  1.000  0.329  0.658  1.0
  Mg  Mg3  1  0.500  0.179  0.855  1.0
  Mg  Mg4  1  0.500  0.675  0.855  1.0
  Mg  Mg5  1  0.500  0.172  0.344  1.0
  W  W6  1  0.500  0.685  0.369  1.0
  Y  Y7  1  1.000  0.810  0.619  1.0
[/CIF]
.
The structure described by Mg6YW crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Y(1), and two equivalent W(1) atoms to form distorted MgY2Mg8W2 cuboctahedra that share corners with four equivalent Mg(2)Y2Mg10 cuboctahedra, corners with ten equivalent Mg(1)Y2Mg8W2 cuboctahedra, edges with two equivalent Mg(2)Y2Mg10 cuboctahedra, edges with two equivalent Mg(1)Y2Mg8W2 cuboctahedra, edges with four equivalent W(1)Y2Mg10 cuboctahedra, faces with two equivalent Mg(2)Y2Mg10 cuboctahedra, faces with two equivalent W(1)Y2Mg10 cuboctahedra, and faces with four equivalent Mg(1)Y2Mg8W2 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Y(1) atoms to form distorted MgY2Mg10 cuboctahedra that share corners with six equivalent Mg(2)Y2Mg10 cuboctahedra, corners with eight equivalent Mg(1)Y2Mg8W2 cuboctahedra, edges with four equivalent Mg(1)Y2Mg8W2 cuboctahedra, faces with two equivalent Mg(2)Y2Mg10 cuboctahedra, faces with four equivalent Mg(1)Y2Mg8W2 cuboctahedra, and faces with six equivalent W(1)Y2Mg10 cuboctahedra. In the third Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Y(1), and two equivalent W(1) atoms. In the fourth Mg site, Mg(4) is bonded in a distorted linear geometry to two equivalent Mg(2), four equivalent Mg(1), four equivalent Mg(3), and two equivalent W(1) atoms. Y(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Mg(2), four equivalent Mg(1), four equivalent Mg(3), and two equivalent W(1) atoms. W(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Y(1) atoms to form WY2Mg10 cuboctahedra that share corners with six equivalent W(1)Y2Mg10 cuboctahedra, edges with eight equivalent Mg(1)Y2Mg8W2 cuboctahedra, faces with two equivalent W(1)Y2Mg10 cuboctahedra, faces with four equivalent Mg(1)Y2Mg8W2 cuboctahedra, and faces with six equivalent Mg(2)Y2Mg10 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_YMg6W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.025
_cell_length_b   6.248
_cell_length_c   6.441
_cell_angle_alpha   119.013
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   176.823
_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  1.000  0.337  0.150  1.0
  Mg  Mg1  1  1.000  0.813  0.150  1.0
  Mg  Mg2  1  1.000  0.329  0.658  1.0
  Mg  Mg3  1  0.500  0.179  0.855  1.0
  Mg  Mg4  1  0.500  0.675  0.855  1.0
  Mg  Mg5  1  0.500  0.172  0.344  1.0
  W  W6  1  0.500  0.685  0.369  1.0
  Y  Y7  1  1.000  0.810  0.619  1.0
[/CIF]
.