The crystal structure described by Dy2Cu2O5 crystallizes in the orthorhombic Pnma space group. Dy(1) is bonded in a 7-coordinate geometry to one O(3), three equivalent O(1), and three equivalent O(2) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a see-saw-like geometry to two equivalent O(2) and two equivalent O(3) atoms. In the second Cu site, Cu(2) is bonded in a T-shaped geometry to one O(3) and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Dy(1) and one Cu(2) atom to form distorted ODy3Cu tetrahedra that share corners with five equivalent O(1)Dy3Cu tetrahedra, corners with five equivalent O(2)Dy3Cu tetrahedra, corners with two equivalent O(3)Dy2Cu3 trigonal bipyramids,  an edgeedge with one O(1)Dy3Cu tetrahedra, edges with two equivalent O(2)Dy3Cu tetrahedra, and  an edgeedge with one O(3)Dy2Cu3 trigonal bipyramid. In the second O site, O(2) is bonded to three equivalent Dy(1) and one Cu(1) atom to form ODy3Cu tetrahedra that share corners with five equivalent O(1)Dy3Cu tetrahedra, corners with five equivalent O(2)Dy3Cu tetrahedra,  a cornercorner with one O(3)Dy2Cu3 trigonal bipyramid,  an edgeedge with one O(2)Dy3Cu tetrahedra, edges with two equivalent O(1)Dy3Cu tetrahedra, and edges with two equivalent O(3)Dy2Cu3 trigonal bipyramids. In the third O site, O(3) is bonded to two equivalent Dy(1), one Cu(2), and two equivalent Cu(1) atoms to form ODy2Cu3 trigonal bipyramids that share corners with two equivalent O(2)Dy3Cu tetrahedra, corners with four equivalent O(1)Dy3Cu tetrahedra, corners with two equivalent O(3)Dy2Cu3 trigonal bipyramids, edges with two equivalent O(1)Dy3Cu tetrahedra, and edges with four equivalent O(2)Dy3Cu tetrahedra. is represented by the CIF card [CIF]
data_Dy2Cu2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.268
_cell_length_b   7.198
_cell_length_c   11.213
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   505.913
_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
  Dy  Dy0  1  0.250  0.881  0.523  1.0
  Dy  Dy1  1  0.250  0.881  0.977  1.0
  Dy  Dy2  1  0.250  0.381  0.023  1.0
  Dy  Dy3  1  0.250  0.381  0.477  1.0
  Dy  Dy4  1  0.750  0.619  0.523  1.0
  Dy  Dy5  1  0.750  0.619  0.977  1.0
  Dy  Dy6  1  0.750  0.119  0.023  1.0
  Dy  Dy7  1  0.750  0.119  0.477  1.0
  Cu  Cu8  1  0.072  0.149  0.250  1.0
  Cu  Cu9  1  0.087  0.628  0.250  1.0
  Cu  Cu10  1  0.413  0.128  0.750  1.0
  Cu  Cu11  1  0.428  0.649  0.750  1.0
  Cu  Cu12  1  0.572  0.351  0.250  1.0
  Cu  Cu13  1  0.587  0.872  0.250  1.0
  Cu  Cu14  1  0.913  0.372  0.750  1.0
  Cu  Cu15  1  0.928  0.851  0.750  1.0
  O  O16  1  0.069  0.644  0.086  1.0
  O  O17  1  0.069  0.644  0.414  1.0
  O  O18  1  0.098  0.113  0.088  1.0
  O  O19  1  0.098  0.113  0.412  1.0
  O  O20  1  0.254  0.381  0.250  1.0
  O  O21  1  0.246  0.881  0.750  1.0
  O  O22  1  0.402  0.613  0.912  1.0
  O  O23  1  0.402  0.613  0.588  1.0
  O  O24  1  0.431  0.144  0.914  1.0
  O  O25  1  0.431  0.144  0.586  1.0
  O  O26  1  0.569  0.856  0.086  1.0
  O  O27  1  0.569  0.856  0.414  1.0
  O  O28  1  0.598  0.387  0.088  1.0
  O  O29  1  0.598  0.387  0.412  1.0
  O  O30  1  0.754  0.119  0.250  1.0
  O  O31  1  0.746  0.619  0.750  1.0
  O  O32  1  0.902  0.887  0.588  1.0
  O  O33  1  0.902  0.887  0.912  1.0
  O  O34  1  0.931  0.356  0.586  1.0
  O  O35  1  0.931  0.356  0.914  1.0
[/CIF]
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The crystal structure described by Dy2Cu2O5 crystallizes in the orthorhombic Pnma space group. Dy(1) is bonded in a 7-coordinate geometry to one O(3), three equivalent O(1), and three equivalent O(2) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a see-saw-like geometry to two equivalent O(2) and two equivalent O(3) atoms. In the second Cu site, Cu(2) is bonded in a T-shaped geometry to one O(3) and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Dy(1) and one Cu(2) atom to form distorted ODy3Cu tetrahedra that share corners with five equivalent O(1)Dy3Cu tetrahedra, corners with five equivalent O(2)Dy3Cu tetrahedra, corners with two equivalent O(3)Dy2Cu3 trigonal bipyramids,  an edgeedge with one O(1)Dy3Cu tetrahedra, edges with two equivalent O(2)Dy3Cu tetrahedra, and  an edgeedge with one O(3)Dy2Cu3 trigonal bipyramid. In the second O site, O(2) is bonded to three equivalent Dy(1) and one Cu(1) atom to form ODy3Cu tetrahedra that share corners with five equivalent O(1)Dy3Cu tetrahedra, corners with five equivalent O(2)Dy3Cu tetrahedra,  a cornercorner with one O(3)Dy2Cu3 trigonal bipyramid,  an edgeedge with one O(2)Dy3Cu tetrahedra, edges with two equivalent O(1)Dy3Cu tetrahedra, and edges with two equivalent O(3)Dy2Cu3 trigonal bipyramids. In the third O site, O(3) is bonded to two equivalent Dy(1), one Cu(2), and two equivalent Cu(1) atoms to form ODy2Cu3 trigonal bipyramids that share corners with two equivalent O(2)Dy3Cu tetrahedra, corners with four equivalent O(1)Dy3Cu tetrahedra, corners with two equivalent O(3)Dy2Cu3 trigonal bipyramids, edges with two equivalent O(1)Dy3Cu tetrahedra, and edges with four equivalent O(2)Dy3Cu tetrahedra. is represented by the CIF card [CIF]
data_Dy2Cu2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.268
_cell_length_b   7.198
_cell_length_c   11.213
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   505.913
_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
  Dy  Dy0  1  0.250  0.881  0.523  1.0
  Dy  Dy1  1  0.250  0.881  0.977  1.0
  Dy  Dy2  1  0.250  0.381  0.023  1.0
  Dy  Dy3  1  0.250  0.381  0.477  1.0
  Dy  Dy4  1  0.750  0.619  0.523  1.0
  Dy  Dy5  1  0.750  0.619  0.977  1.0
  Dy  Dy6  1  0.750  0.119  0.023  1.0
  Dy  Dy7  1  0.750  0.119  0.477  1.0
  Cu  Cu8  1  0.072  0.149  0.250  1.0
  Cu  Cu9  1  0.087  0.628  0.250  1.0
  Cu  Cu10  1  0.413  0.128  0.750  1.0
  Cu  Cu11  1  0.428  0.649  0.750  1.0
  Cu  Cu12  1  0.572  0.351  0.250  1.0
  Cu  Cu13  1  0.587  0.872  0.250  1.0
  Cu  Cu14  1  0.913  0.372  0.750  1.0
  Cu  Cu15  1  0.928  0.851  0.750  1.0
  O  O16  1  0.069  0.644  0.086  1.0
  O  O17  1  0.069  0.644  0.414  1.0
  O  O18  1  0.098  0.113  0.088  1.0
  O  O19  1  0.098  0.113  0.412  1.0
  O  O20  1  0.254  0.381  0.250  1.0
  O  O21  1  0.246  0.881  0.750  1.0
  O  O22  1  0.402  0.613  0.912  1.0
  O  O23  1  0.402  0.613  0.588  1.0
  O  O24  1  0.431  0.144  0.914  1.0
  O  O25  1  0.431  0.144  0.586  1.0
  O  O26  1  0.569  0.856  0.086  1.0
  O  O27  1  0.569  0.856  0.414  1.0
  O  O28  1  0.598  0.387  0.088  1.0
  O  O29  1  0.598  0.387  0.412  1.0
  O  O30  1  0.754  0.119  0.250  1.0
  O  O31  1  0.746  0.619  0.750  1.0
  O  O32  1  0.902  0.887  0.588  1.0
  O  O33  1  0.902  0.887  0.912  1.0
  O  O34  1  0.931  0.356  0.586  1.0
  O  O35  1  0.931  0.356  0.914  1.0
[/CIF]
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