The structure described by CeMg2 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded in a 12-coordinate geometry to seven equivalent Mg(1) and five equivalent Ce(1) atoms. Ce(1) is bonded to ten equivalent Mg(1) and two equivalent Ce(1) atoms to form a mixture of edge and face-sharing CeCe2Mg10 cuboctahedra. is represented by the CIF card [CIF]
data_CeMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.956
_cell_length_b   5.956
_cell_length_c   5.126
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.210
_symmetry_Int_Tables_number   1
_cell_volume   157.153
_cell_formula_units_Z   2
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  0.629  0.629  0.750  1.0
  Ce  Ce1  1  0.371  0.371  0.250  1.0
  Mg  Mg2  1  0.973  0.317  0.750  1.0
  Mg  Mg3  1  0.317  0.973  0.750  1.0
  Mg  Mg4  1  0.683  0.027  0.250  1.0
  Mg  Mg5  1  0.027  0.683  0.250  1.0
[/CIF]
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The structure described by CeMg2 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded in a 12-coordinate geometry to seven equivalent Mg(1) and five equivalent Ce(1) atoms. Ce(1) is bonded to ten equivalent Mg(1) and two equivalent Ce(1) atoms to form a mixture of edge and face-sharing CeCe2Mg10 cuboctahedra. is represented by the CIF card [CIF]
data_CeMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.956
_cell_length_b   5.956
_cell_length_c   5.126
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.210
_symmetry_Int_Tables_number   1
_cell_volume   157.153
_cell_formula_units_Z   2
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  0.629  0.629  0.750  1.0
  Ce  Ce1  1  0.371  0.371  0.250  1.0
  Mg  Mg2  1  0.973  0.317  0.750  1.0
  Mg  Mg3  1  0.317  0.973  0.750  1.0
  Mg  Mg4  1  0.683  0.027  0.250  1.0
  Mg  Mg5  1  0.027  0.683  0.250  1.0
[/CIF]
.