The structure described by CeMg2 is Hexagonal Laves structured and crystallizes in the orthorhombic Cmcm space group. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(3), four equivalent Mg(2), and six equivalent Ce(1) atoms to form a mixture of edge, corner, and face-sharing MgCe6Mg6 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), and six equivalent Ce(1) atoms to form a mixture of edge, corner, and face-sharing MgCe6Mg6 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Mg(1), four equivalent Mg(2), and six equivalent Ce(1) atoms to form a mixture of edge, corner, and face-sharing MgCe6Mg6 cuboctahedra. Ce(1) is bonded in a 16-coordinate geometry to three equivalent Mg(1), three equivalent Mg(3), six equivalent Mg(2), and four equivalent Ce(1) atoms. is represented by the CIF card [CIF]
data_CeMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.302
_cell_length_b   6.302
_cell_length_c   10.618
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.668
_symmetry_Int_Tables_number   1
_cell_volume   366.433
_cell_formula_units_Z   4
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  0.667  0.333  0.569  1.0
  Ce  Ce1  1  0.333  0.667  0.431  1.0
  Ce  Ce2  1  0.333  0.667  0.069  1.0
  Ce  Ce3  1  0.667  0.333  0.931  1.0
  Mg  Mg4  1  0.000  0.000  0.500  1.0
  Mg  Mg5  1  0.000  0.000  0.000  1.0
  Mg  Mg6  1  0.171  0.342  0.750  1.0
  Mg  Mg7  1  0.171  0.829  0.750  1.0
  Mg  Mg8  1  0.658  0.829  0.750  1.0
  Mg  Mg9  1  0.829  0.658  0.250  1.0
  Mg  Mg10  1  0.829  0.171  0.250  1.0
  Mg  Mg11  1  0.342  0.171  0.250  1.0
[/CIF]
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The structure described by CeMg2 is Hexagonal Laves structured and crystallizes in the orthorhombic Cmcm space group. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(3), four equivalent Mg(2), and six equivalent Ce(1) atoms to form a mixture of edge, corner, and face-sharing MgCe6Mg6 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), and six equivalent Ce(1) atoms to form a mixture of edge, corner, and face-sharing MgCe6Mg6 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Mg(1), four equivalent Mg(2), and six equivalent Ce(1) atoms to form a mixture of edge, corner, and face-sharing MgCe6Mg6 cuboctahedra. Ce(1) is bonded in a 16-coordinate geometry to three equivalent Mg(1), three equivalent Mg(3), six equivalent Mg(2), and four equivalent Ce(1) atoms. is represented by the CIF card [CIF]
data_CeMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.302
_cell_length_b   6.302
_cell_length_c   10.618
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.668
_symmetry_Int_Tables_number   1
_cell_volume   366.433
_cell_formula_units_Z   4
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  0.667  0.333  0.569  1.0
  Ce  Ce1  1  0.333  0.667  0.431  1.0
  Ce  Ce2  1  0.333  0.667  0.069  1.0
  Ce  Ce3  1  0.667  0.333  0.931  1.0
  Mg  Mg4  1  0.000  0.000  0.500  1.0
  Mg  Mg5  1  0.000  0.000  0.000  1.0
  Mg  Mg6  1  0.171  0.342  0.750  1.0
  Mg  Mg7  1  0.171  0.829  0.750  1.0
  Mg  Mg8  1  0.658  0.829  0.750  1.0
  Mg  Mg9  1  0.829  0.658  0.250  1.0
  Mg  Mg10  1  0.829  0.171  0.250  1.0
  Mg  Mg11  1  0.342  0.171  0.250  1.0
[/CIF]
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