The structure described by Dy(FeO2)2 is Aluminum carbonitride-like structured and crystallizes in the trigonal R-3m space group. Dy(1) is bonded to six equivalent O(1) atoms to form distorted DyO6 octahedra that share corners with six equivalent Fe(1)O5 trigonal bipyramids and edges with six equivalent Dy(1)O6 octahedra. Fe(1) is bonded to one O(1) and four equivalent O(2) atoms to form FeO5 trigonal bipyramids that share corners with three equivalent Dy(1)O6 octahedra, corners with six equivalent Fe(1)O5 trigonal bipyramids, and edges with three equivalent Fe(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 63°. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Dy(1) and one Fe(1) atom to form ODy3Fe tetrahedra that share corners with nine equivalent O(1)Dy3Fe tetrahedra, corners with four equivalent O(2)Fe4 trigonal pyramids, and edges with three equivalent O(1)Dy3Fe tetrahedra. In the second O site, O(2) is bonded to four equivalent Fe(1) atoms to form OFe4 trigonal pyramids that share corners with four equivalent O(1)Dy3Fe tetrahedra, corners with six equivalent O(2)Fe4 trigonal pyramids, and edges with three equivalent O(2)Fe4 trigonal pyramids. is represented by the CIF file [CIF]
data_Dy(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.632
_cell_length_b   8.632
_cell_length_c   8.632
_cell_angle_alpha   23.711
_cell_angle_beta   23.711
_cell_angle_gamma   23.711
_symmetry_Int_Tables_number   1
_cell_volume   91.351
_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
  Dy  Dy0  1  0.500  0.500  0.500  1.0
  Fe  Fe1  1  0.713  0.713  0.713  1.0
  Fe  Fe2  1  0.287  0.287  0.287  1.0
  O  O3  1  0.792  0.792  0.792  1.0
  O  O4  1  0.628  0.628  0.628  1.0
  O  O5  1  0.208  0.208  0.208  1.0
  O  O6  1  0.372  0.372  0.372  1.0
[/CIF]
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The structure described by Dy(FeO2)2 is Aluminum carbonitride-like structured and crystallizes in the trigonal R-3m space group. Dy(1) is bonded to six equivalent O(1) atoms to form distorted DyO6 octahedra that share corners with six equivalent Fe(1)O5 trigonal bipyramids and edges with six equivalent Dy(1)O6 octahedra. Fe(1) is bonded to one O(1) and four equivalent O(2) atoms to form FeO5 trigonal bipyramids that share corners with three equivalent Dy(1)O6 octahedra, corners with six equivalent Fe(1)O5 trigonal bipyramids, and edges with three equivalent Fe(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 63°. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Dy(1) and one Fe(1) atom to form ODy3Fe tetrahedra that share corners with nine equivalent O(1)Dy3Fe tetrahedra, corners with four equivalent O(2)Fe4 trigonal pyramids, and edges with three equivalent O(1)Dy3Fe tetrahedra. In the second O site, O(2) is bonded to four equivalent Fe(1) atoms to form OFe4 trigonal pyramids that share corners with four equivalent O(1)Dy3Fe tetrahedra, corners with six equivalent O(2)Fe4 trigonal pyramids, and edges with three equivalent O(2)Fe4 trigonal pyramids. is represented by the CIF file [CIF]
data_Dy(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.632
_cell_length_b   8.632
_cell_length_c   8.632
_cell_angle_alpha   23.711
_cell_angle_beta   23.711
_cell_angle_gamma   23.711
_symmetry_Int_Tables_number   1
_cell_volume   91.351
_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
  Dy  Dy0  1  0.500  0.500  0.500  1.0
  Fe  Fe1  1  0.713  0.713  0.713  1.0
  Fe  Fe2  1  0.287  0.287  0.287  1.0
  O  O3  1  0.792  0.792  0.792  1.0
  O  O4  1  0.628  0.628  0.628  1.0
  O  O5  1  0.208  0.208  0.208  1.0
  O  O6  1  0.372  0.372  0.372  1.0
[/CIF]
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