The structure described by MgCeCu crystallizes in the hexagonal P-62m space group. Mg(1) is bonded in a 4-coordinate geometry to six equivalent Ce(1), two equivalent Cu(1), and two equivalent Cu(2) atoms. Ce(1) is bonded in a 11-coordinate geometry to six equivalent Mg(1), one Cu(2), and four equivalent Cu(1) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(2) is bonded in a 9-coordinate geometry to six equivalent Mg(1) and three equivalent Ce(1) atoms. In the second Cu site, Cu(1) is bonded in a 9-coordinate geometry to three equivalent Mg(1) and six equivalent Ce(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_CeMgCu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.679
_cell_length_b   7.679
_cell_length_c   4.167
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   212.755
_cell_formula_units_Z   3
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  0.579  0.000  0.000  1.0
  Ce  Ce1  1  0.000  0.579  0.000  1.0
  Ce  Ce2  1  0.421  0.421  0.000  1.0
  Mg  Mg3  1  0.238  0.000  0.500  1.0
  Mg  Mg4  1  0.000  0.238  0.500  1.0
  Mg  Mg5  1  0.762  0.762  0.500  1.0
  Cu  Cu6  1  0.333  0.667  0.500  1.0
  Cu  Cu7  1  0.667  0.333  0.500  1.0
  Cu  Cu8  1  0.000  0.000  0.000  1.0
[/CIF]
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The structure described by MgCeCu crystallizes in the hexagonal P-62m space group. Mg(1) is bonded in a 4-coordinate geometry to six equivalent Ce(1), two equivalent Cu(1), and two equivalent Cu(2) atoms. Ce(1) is bonded in a 11-coordinate geometry to six equivalent Mg(1), one Cu(2), and four equivalent Cu(1) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(2) is bonded in a 9-coordinate geometry to six equivalent Mg(1) and three equivalent Ce(1) atoms. In the second Cu site, Cu(1) is bonded in a 9-coordinate geometry to three equivalent Mg(1) and six equivalent Ce(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_CeMgCu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.679
_cell_length_b   7.679
_cell_length_c   4.167
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   212.755
_cell_formula_units_Z   3
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  0.579  0.000  0.000  1.0
  Ce  Ce1  1  0.000  0.579  0.000  1.0
  Ce  Ce2  1  0.421  0.421  0.000  1.0
  Mg  Mg3  1  0.238  0.000  0.500  1.0
  Mg  Mg4  1  0.000  0.238  0.500  1.0
  Mg  Mg5  1  0.762  0.762  0.500  1.0
  Cu  Cu6  1  0.333  0.667  0.500  1.0
  Cu  Cu7  1  0.667  0.333  0.500  1.0
  Cu  Cu8  1  0.000  0.000  0.000  1.0
[/CIF]
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