The crystal structure described by Er5Pt2Sb crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded to four equivalent Pt(1) and two equivalent Sb(1) atoms to form distorted corner-sharing ErSb2Pt4 octahedra. The corner-sharing octahedral tilt angles range from 0-48°. In the second Er site, Er(2) is bonded in a 5-coordinate geometry to three equivalent Pt(1) and two equivalent Sb(1) atoms. Pt(1) is bonded in a 8-coordinate geometry to two equivalent Er(1) and six equivalent Er(2) atoms. Sb(1) is bonded in a distorted q6 geometry to two equivalent Er(1) and eight equivalent Er(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er5SbPt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.652
_cell_length_b   8.652
_cell_length_c   8.652
_cell_angle_alpha   127.585
_cell_angle_beta   127.585
_cell_angle_gamma   77.298
_symmetry_Int_Tables_number   1
_cell_volume   394.647
_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
  Er  Er0  1  0.000  0.000  0.000  1.0
  Er  Er1  1  0.500  0.500  0.000  1.0
  Er  Er2  1  0.795  0.295  0.813  1.0
  Er  Er3  1  0.205  0.705  0.187  1.0
  Er  Er4  1  0.482  0.982  0.187  1.0
  Er  Er5  1  0.295  0.482  0.500  1.0
  Er  Er6  1  0.018  0.205  0.500  1.0
  Er  Er7  1  0.518  0.018  0.813  1.0
  Er  Er8  1  0.705  0.518  0.500  1.0
  Er  Er9  1  0.982  0.795  0.500  1.0
  Sb  Sb10  1  0.250  0.250  0.000  1.0
  Sb  Sb11  1  0.750  0.750  0.000  1.0
  Pt  Pt12  1  0.139  0.639  0.779  1.0
  Pt  Pt13  1  0.861  0.361  0.221  1.0
  Pt  Pt14  1  0.639  0.861  0.500  1.0
  Pt  Pt15  1  0.361  0.139  0.500  1.0
[/CIF]
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The crystal structure described by Er5Pt2Sb crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded to four equivalent Pt(1) and two equivalent Sb(1) atoms to form distorted corner-sharing ErSb2Pt4 octahedra. The corner-sharing octahedral tilt angles range from 0-48°. In the second Er site, Er(2) is bonded in a 5-coordinate geometry to three equivalent Pt(1) and two equivalent Sb(1) atoms. Pt(1) is bonded in a 8-coordinate geometry to two equivalent Er(1) and six equivalent Er(2) atoms. Sb(1) is bonded in a distorted q6 geometry to two equivalent Er(1) and eight equivalent Er(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er5SbPt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.652
_cell_length_b   8.652
_cell_length_c   8.652
_cell_angle_alpha   127.585
_cell_angle_beta   127.585
_cell_angle_gamma   77.298
_symmetry_Int_Tables_number   1
_cell_volume   394.647
_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
  Er  Er0  1  0.000  0.000  0.000  1.0
  Er  Er1  1  0.500  0.500  0.000  1.0
  Er  Er2  1  0.795  0.295  0.813  1.0
  Er  Er3  1  0.205  0.705  0.187  1.0
  Er  Er4  1  0.482  0.982  0.187  1.0
  Er  Er5  1  0.295  0.482  0.500  1.0
  Er  Er6  1  0.018  0.205  0.500  1.0
  Er  Er7  1  0.518  0.018  0.813  1.0
  Er  Er8  1  0.705  0.518  0.500  1.0
  Er  Er9  1  0.982  0.795  0.500  1.0
  Sb  Sb10  1  0.250  0.250  0.000  1.0
  Sb  Sb11  1  0.750  0.750  0.000  1.0
  Pt  Pt12  1  0.139  0.639  0.779  1.0
  Pt  Pt13  1  0.861  0.361  0.221  1.0
  Pt  Pt14  1  0.639  0.861  0.500  1.0
  Pt  Pt15  1  0.361  0.139  0.500  1.0
[/CIF]
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