The structure described by Mg6CeW 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 Ce(1), and two equivalent W(1) atoms to form distorted MgCe2Mg8W2 cuboctahedra that share corners with four equivalent W(1)Ce2Mg10 cuboctahedra, corners with ten equivalent Mg(1)Ce2Mg8W2 cuboctahedra, edges with two equivalent Mg(1)Ce2Mg8W2 cuboctahedra, edges with two equivalent W(1)Ce2Mg10 cuboctahedra, edges with four equivalent Mg(3)Ce2Mg10 cuboctahedra, faces with two equivalent Mg(3)Ce2Mg10 cuboctahedra, faces with two equivalent W(1)Ce2Mg10 cuboctahedra, and faces with four equivalent Mg(1)Ce2Mg8W2 cuboctahedra. In the second Mg site, Mg(2) is bonded in a 2-coordinate geometry to two equivalent Mg(1), two equivalent Mg(3), and two equivalent W(1) atoms. In the third Mg site, Mg(3) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ce(1) atoms to form distorted MgCe2Mg10 cuboctahedra that share corners with six equivalent Mg(3)Ce2Mg10 cuboctahedra, edges with eight equivalent Mg(1)Ce2Mg8W2 cuboctahedra, faces with two equivalent Mg(3)Ce2Mg10 cuboctahedra, faces with four equivalent Mg(1)Ce2Mg8W2 cuboctahedra, and faces with six equivalent W(1)Ce2Mg10 cuboctahedra. In the fourth Mg site, Mg(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Mg(3), four equivalent Mg(1), and two equivalent W(1) atoms. Ce(1) is bonded in a distorted linear geometry to two equivalent Mg(3), four equivalent Mg(1), and two equivalent W(1) atoms. W(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ce(1) atoms to form distorted WCe2Mg10 cuboctahedra that share corners with six equivalent W(1)Ce2Mg10 cuboctahedra, corners with eight equivalent Mg(1)Ce2Mg8W2 cuboctahedra, edges with four equivalent Mg(1)Ce2Mg8W2 cuboctahedra, faces with two equivalent W(1)Ce2Mg10 cuboctahedra, faces with four equivalent Mg(1)Ce2Mg8W2 cuboctahedra, and faces with six equivalent Mg(3)Ce2Mg10 cuboctahedra. is represented by the CIF file [CIF]
data_CeMg6W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.169
_cell_length_b   5.791
_cell_length_c   6.575
_cell_angle_alpha   116.128
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   176.707
_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
  Ce  Ce0  1  0.500  0.178  0.355  1.0
  Mg  Mg1  1  0.500  0.676  0.851  1.0
  Mg  Mg2  1  0.500  0.176  0.851  1.0
  Mg  Mg3  1  1.000  0.821  0.163  1.0
  Mg  Mg4  1  0.000  0.342  0.163  1.0
  Mg  Mg5  1  0.000  0.336  0.673  1.0
  Mg  Mg6  1  0.000  0.803  0.606  1.0
  W  W7  1  0.500  0.668  0.337  1.0
[/CIF]
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The structure described by Mg6CeW 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 Ce(1), and two equivalent W(1) atoms to form distorted MgCe2Mg8W2 cuboctahedra that share corners with four equivalent W(1)Ce2Mg10 cuboctahedra, corners with ten equivalent Mg(1)Ce2Mg8W2 cuboctahedra, edges with two equivalent Mg(1)Ce2Mg8W2 cuboctahedra, edges with two equivalent W(1)Ce2Mg10 cuboctahedra, edges with four equivalent Mg(3)Ce2Mg10 cuboctahedra, faces with two equivalent Mg(3)Ce2Mg10 cuboctahedra, faces with two equivalent W(1)Ce2Mg10 cuboctahedra, and faces with four equivalent Mg(1)Ce2Mg8W2 cuboctahedra. In the second Mg site, Mg(2) is bonded in a 2-coordinate geometry to two equivalent Mg(1), two equivalent Mg(3), and two equivalent W(1) atoms. In the third Mg site, Mg(3) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ce(1) atoms to form distorted MgCe2Mg10 cuboctahedra that share corners with six equivalent Mg(3)Ce2Mg10 cuboctahedra, edges with eight equivalent Mg(1)Ce2Mg8W2 cuboctahedra, faces with two equivalent Mg(3)Ce2Mg10 cuboctahedra, faces with four equivalent Mg(1)Ce2Mg8W2 cuboctahedra, and faces with six equivalent W(1)Ce2Mg10 cuboctahedra. In the fourth Mg site, Mg(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Mg(3), four equivalent Mg(1), and two equivalent W(1) atoms. Ce(1) is bonded in a distorted linear geometry to two equivalent Mg(3), four equivalent Mg(1), and two equivalent W(1) atoms. W(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ce(1) atoms to form distorted WCe2Mg10 cuboctahedra that share corners with six equivalent W(1)Ce2Mg10 cuboctahedra, corners with eight equivalent Mg(1)Ce2Mg8W2 cuboctahedra, edges with four equivalent Mg(1)Ce2Mg8W2 cuboctahedra, faces with two equivalent W(1)Ce2Mg10 cuboctahedra, faces with four equivalent Mg(1)Ce2Mg8W2 cuboctahedra, and faces with six equivalent Mg(3)Ce2Mg10 cuboctahedra. is represented by the CIF file [CIF]
data_CeMg6W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.169
_cell_length_b   5.791
_cell_length_c   6.575
_cell_angle_alpha   116.128
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   176.707
_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
  Ce  Ce0  1  0.500  0.178  0.355  1.0
  Mg  Mg1  1  0.500  0.676  0.851  1.0
  Mg  Mg2  1  0.500  0.176  0.851  1.0
  Mg  Mg3  1  1.000  0.821  0.163  1.0
  Mg  Mg4  1  0.000  0.342  0.163  1.0
  Mg  Mg5  1  0.000  0.336  0.673  1.0
  Mg  Mg6  1  0.000  0.803  0.606  1.0
  W  W7  1  0.500  0.668  0.337  1.0
[/CIF]
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