The crystal structure described by Er2Pt2O5 crystallizes in the tetragonal P4/mmm space group. Er(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a body-centered cubic geometry to eight equivalent O(1) atoms. In the second Pt site, Pt(2) is bonded in a square co-planar geometry to four equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Er(1) and two equivalent Pt(1) atoms to form OEr2Pt2 tetrahedra that share corners with two equivalent O(2)Er2Pt4 octahedra, corners with ten equivalent O(1)Er2Pt2 tetrahedra, and edges with five equivalent O(1)Er2Pt2 tetrahedra. The corner-sharing octahedral tilt angles are 59°. In the second O site, O(2) is bonded to two equivalent Er(1) and four equivalent Pt(2) atoms to form distorted OEr2Pt4 octahedra that share corners with four equivalent O(2)Er2Pt4 octahedra, corners with eight equivalent O(1)Er2Pt2 tetrahedra, and edges with four equivalent O(2)Er2Pt4 octahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er2Pt2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.757
_cell_length_b   3.757
_cell_length_c   9.006
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   127.148
_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  0.500  0.500  0.260  1.0
  Er  Er1  1  0.500  0.500  0.740  1.0
  Pt  Pt2  1  0.000  0.000  0.000  1.0
  Pt  Pt3  1  0.000  0.000  0.500  1.0
  O  O4  1  0.500  0.000  0.135  1.0
  O  O5  1  0.500  0.000  0.865  1.0
  O  O6  1  0.500  0.500  0.500  1.0
  O  O7  1  0.000  0.500  0.135  1.0
  O  O8  1  0.000  0.500  0.865  1.0
[/CIF]
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The crystal structure described by Er2Pt2O5 crystallizes in the tetragonal P4/mmm space group. Er(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a body-centered cubic geometry to eight equivalent O(1) atoms. In the second Pt site, Pt(2) is bonded in a square co-planar geometry to four equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Er(1) and two equivalent Pt(1) atoms to form OEr2Pt2 tetrahedra that share corners with two equivalent O(2)Er2Pt4 octahedra, corners with ten equivalent O(1)Er2Pt2 tetrahedra, and edges with five equivalent O(1)Er2Pt2 tetrahedra. The corner-sharing octahedral tilt angles are 59°. In the second O site, O(2) is bonded to two equivalent Er(1) and four equivalent Pt(2) atoms to form distorted OEr2Pt4 octahedra that share corners with four equivalent O(2)Er2Pt4 octahedra, corners with eight equivalent O(1)Er2Pt2 tetrahedra, and edges with four equivalent O(2)Er2Pt4 octahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er2Pt2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.757
_cell_length_b   3.757
_cell_length_c   9.006
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   127.148
_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  0.500  0.500  0.260  1.0
  Er  Er1  1  0.500  0.500  0.740  1.0
  Pt  Pt2  1  0.000  0.000  0.000  1.0
  Pt  Pt3  1  0.000  0.000  0.500  1.0
  O  O4  1  0.500  0.000  0.135  1.0
  O  O5  1  0.500  0.000  0.865  1.0
  O  O6  1  0.500  0.500  0.500  1.0
  O  O7  1  0.000  0.500  0.135  1.0
  O  O8  1  0.000  0.500  0.865  1.0
[/CIF]
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