The structure described by Eu5Cu2Cd crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 4-coordinate geometry to four equivalent Cu(1) and two equivalent Cd(1) atoms. In the second Eu site, Eu(2) is bonded to three equivalent Cu(1) and two equivalent Cd(1) atoms to form a mixture of distorted face, corner, and edge-sharing EuCd2Cu3 trigonal bipyramids. Cu(1) is bonded in a 9-coordinate geometry to two equivalent Eu(1), six equivalent Eu(2), and one Cu(1) atom. Cd(1) is bonded in a 10-coordinate geometry to two equivalent Eu(1) and eight equivalent Eu(2) atoms. is represented by the CIF file [CIF]
data_Eu5CdCu2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.403
_cell_length_b   9.403
_cell_length_c   9.403
_cell_angle_alpha   128.810
_cell_angle_beta   128.810
_cell_angle_gamma   75.316
_symmetry_Int_Tables_number   1
_cell_volume   491.268
_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
  Eu  Eu0  1  0.500  0.500  0.000  1.0
  Eu  Eu1  1  0.000  0.000  0.000  1.0
  Eu  Eu2  1  0.527  0.027  0.833  1.0
  Eu  Eu3  1  0.193  0.693  0.167  1.0
  Eu  Eu4  1  0.027  0.193  0.500  1.0
  Eu  Eu5  1  0.693  0.527  0.500  1.0
  Eu  Eu6  1  0.473  0.973  0.167  1.0
  Eu  Eu7  1  0.807  0.307  0.833  1.0
  Eu  Eu8  1  0.973  0.807  0.500  1.0
  Eu  Eu9  1  0.307  0.473  0.500  1.0
  Cd  Cd10  1  0.250  0.250  0.000  1.0
  Cd  Cd11  1  0.750  0.750  0.000  1.0
  Cu  Cu12  1  0.115  0.615  0.730  1.0
  Cu  Cu13  1  0.885  0.385  0.270  1.0
  Cu  Cu14  1  0.615  0.885  0.500  1.0
  Cu  Cu15  1  0.385  0.115  0.500  1.0
[/CIF]
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The structure described by Eu5Cu2Cd crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 4-coordinate geometry to four equivalent Cu(1) and two equivalent Cd(1) atoms. In the second Eu site, Eu(2) is bonded to three equivalent Cu(1) and two equivalent Cd(1) atoms to form a mixture of distorted face, corner, and edge-sharing EuCd2Cu3 trigonal bipyramids. Cu(1) is bonded in a 9-coordinate geometry to two equivalent Eu(1), six equivalent Eu(2), and one Cu(1) atom. Cd(1) is bonded in a 10-coordinate geometry to two equivalent Eu(1) and eight equivalent Eu(2) atoms. is represented by the CIF file [CIF]
data_Eu5CdCu2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.403
_cell_length_b   9.403
_cell_length_c   9.403
_cell_angle_alpha   128.810
_cell_angle_beta   128.810
_cell_angle_gamma   75.316
_symmetry_Int_Tables_number   1
_cell_volume   491.268
_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
  Eu  Eu0  1  0.500  0.500  0.000  1.0
  Eu  Eu1  1  0.000  0.000  0.000  1.0
  Eu  Eu2  1  0.527  0.027  0.833  1.0
  Eu  Eu3  1  0.193  0.693  0.167  1.0
  Eu  Eu4  1  0.027  0.193  0.500  1.0
  Eu  Eu5  1  0.693  0.527  0.500  1.0
  Eu  Eu6  1  0.473  0.973  0.167  1.0
  Eu  Eu7  1  0.807  0.307  0.833  1.0
  Eu  Eu8  1  0.973  0.807  0.500  1.0
  Eu  Eu9  1  0.307  0.473  0.500  1.0
  Cd  Cd10  1  0.250  0.250  0.000  1.0
  Cd  Cd11  1  0.750  0.750  0.000  1.0
  Cu  Cu12  1  0.115  0.615  0.730  1.0
  Cu  Cu13  1  0.885  0.385  0.270  1.0
  Cu  Cu14  1  0.615  0.885  0.500  1.0
  Cu  Cu15  1  0.385  0.115  0.500  1.0
[/CIF]
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