The material described by Er2Pt is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded to four equivalent Pt(1) atoms to form a mixture of corner and edge-sharing ErPt4 tetrahedra. In the second Er site, Er(2) is bonded in a 3-coordinate geometry to three equivalent Pt(1) atoms. Pt(1) is bonded in a 7-coordinate geometry to three equivalent Er(2) and four equivalent Er(1) atoms. is represented by the CIF file [CIF]
data_Er2Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.707
_cell_length_b   7.041
_cell_length_c   8.670
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   287.340
_cell_formula_units_Z   4
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  0.750  0.143  0.919  1.0
  Er  Er1  1  0.250  0.857  0.081  1.0
  Er  Er2  1  0.750  0.643  0.581  1.0
  Er  Er3  1  0.250  0.357  0.419  1.0
  Er  Er4  1  0.750  0.009  0.333  1.0
  Er  Er5  1  0.250  0.991  0.667  1.0
  Er  Er6  1  0.750  0.509  0.167  1.0
  Er  Er7  1  0.250  0.491  0.833  1.0
  Pt  Pt8  1  0.750  0.741  0.907  1.0
  Pt  Pt9  1  0.250  0.259  0.093  1.0
  Pt  Pt10  1  0.750  0.241  0.593  1.0
  Pt  Pt11  1  0.250  0.759  0.407  1.0
[/CIF]
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The material described by Er2Pt is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded to four equivalent Pt(1) atoms to form a mixture of corner and edge-sharing ErPt4 tetrahedra. In the second Er site, Er(2) is bonded in a 3-coordinate geometry to three equivalent Pt(1) atoms. Pt(1) is bonded in a 7-coordinate geometry to three equivalent Er(2) and four equivalent Er(1) atoms. is represented by the CIF file [CIF]
data_Er2Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.707
_cell_length_b   7.041
_cell_length_c   8.670
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   287.340
_cell_formula_units_Z   4
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  0.750  0.143  0.919  1.0
  Er  Er1  1  0.250  0.857  0.081  1.0
  Er  Er2  1  0.750  0.643  0.581  1.0
  Er  Er3  1  0.250  0.357  0.419  1.0
  Er  Er4  1  0.750  0.009  0.333  1.0
  Er  Er5  1  0.250  0.991  0.667  1.0
  Er  Er6  1  0.750  0.509  0.167  1.0
  Er  Er7  1  0.250  0.491  0.833  1.0
  Pt  Pt8  1  0.750  0.741  0.907  1.0
  Pt  Pt9  1  0.250  0.259  0.093  1.0
  Pt  Pt10  1  0.750  0.241  0.593  1.0
  Pt  Pt11  1  0.250  0.759  0.407  1.0
[/CIF]
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