The crystal structure described by ErPt2Sn crystallizes in the hexagonal P6_3/mmc space group. Er(1) is bonded in a 8-coordinate geometry to eight equivalent Pt(1) atoms. Pt(1) is bonded in a 7-coordinate geometry to four equivalent Er(1) and three equivalent Sn(1) atoms. Sn(1) is bonded to six equivalent Pt(1) atoms to form distorted edge-sharing SnPt6 cuboctahedra. is represented by the CIF file [CIF]
data_ErSnPt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.510
_cell_length_b   4.510
_cell_length_c   9.011
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   158.751
_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  0.667  0.333  0.750  1.0
  Er  Er1  1  0.333  0.667  0.250  1.0
  Sn  Sn2  1  0.000  0.000  0.500  1.0
  Sn  Sn3  1  0.000  0.000  0.000  1.0
  Pt  Pt4  1  0.667  0.333  0.089  1.0
  Pt  Pt5  1  0.333  0.667  0.911  1.0
  Pt  Pt6  1  0.333  0.667  0.589  1.0
  Pt  Pt7  1  0.667  0.333  0.411  1.0
[/CIF]
.
The crystal structure described by ErPt2Sn crystallizes in the hexagonal P6_3/mmc space group. Er(1) is bonded in a 8-coordinate geometry to eight equivalent Pt(1) atoms. Pt(1) is bonded in a 7-coordinate geometry to four equivalent Er(1) and three equivalent Sn(1) atoms. Sn(1) is bonded to six equivalent Pt(1) atoms to form distorted edge-sharing SnPt6 cuboctahedra. is represented by the CIF file [CIF]
data_ErSnPt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.510
_cell_length_b   4.510
_cell_length_c   9.011
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   158.751
_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  0.667  0.333  0.750  1.0
  Er  Er1  1  0.333  0.667  0.250  1.0
  Sn  Sn2  1  0.000  0.000  0.500  1.0
  Sn  Sn3  1  0.000  0.000  0.000  1.0
  Pt  Pt4  1  0.667  0.333  0.089  1.0
  Pt  Pt5  1  0.333  0.667  0.911  1.0
  Pt  Pt6  1  0.333  0.667  0.589  1.0
  Pt  Pt7  1  0.667  0.333  0.411  1.0
[/CIF]
.