The structure described by Er2NiCu crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 7-coordinate geometry to four equivalent Ni(1) and three equivalent Cu(1) atoms. In the second Er site, Er(2) is bonded in a 7-coordinate geometry to three equivalent Ni(1) and four equivalent Cu(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to three equivalent Er(2), four equivalent Er(1), and two equivalent Cu(1) atoms. Cu(1) is bonded in a 9-coordinate geometry to three equivalent Er(1), four equivalent Er(2), and two equivalent Ni(1) atoms. is represented by the CIF card [CIF]
data_Er2CuNi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.308
_cell_length_b   5.308
_cell_length_c   4.340
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   139.995
_symmetry_Int_Tables_number   1
_cell_volume   78.597
_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
  Er  Er0  1  0.861  0.139  0.500  1.0
  Er  Er1  1  0.139  0.861  0.000  1.0
  Cu  Cu2  1  0.572  0.428  0.500  1.0
  Ni  Ni3  1  0.428  0.572  0.000  1.0
[/CIF]
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The structure described by Er2NiCu crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 7-coordinate geometry to four equivalent Ni(1) and three equivalent Cu(1) atoms. In the second Er site, Er(2) is bonded in a 7-coordinate geometry to three equivalent Ni(1) and four equivalent Cu(1) atoms. Ni(1) is bonded in a 9-coordinate geometry to three equivalent Er(2), four equivalent Er(1), and two equivalent Cu(1) atoms. Cu(1) is bonded in a 9-coordinate geometry to three equivalent Er(1), four equivalent Er(2), and two equivalent Ni(1) atoms. is represented by the CIF card [CIF]
data_Er2CuNi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.308
_cell_length_b   5.308
_cell_length_c   4.340
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   139.995
_symmetry_Int_Tables_number   1
_cell_volume   78.597
_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
  Er  Er0  1  0.861  0.139  0.500  1.0
  Er  Er1  1  0.139  0.861  0.000  1.0
  Cu  Cu2  1  0.572  0.428  0.500  1.0
  Ni  Ni3  1  0.428  0.572  0.000  1.0
[/CIF]
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