The crystal structure described by Eu2Cu2O5 crystallizes in the orthorhombic Ima2 space group. Eu(1) is bonded in a 8-coordinate geometry to one O(3), three equivalent O(2), and four equivalent O(1) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CuO6 octahedra that share corners with four equivalent Cu(1)O6 octahedra and corners with two equivalent Cu(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 11°. In the second Cu site, Cu(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form CuO4 tetrahedra that share corners with two equivalent Cu(1)O6 octahedra and corners with two equivalent Cu(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 31°. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Eu(1) and two equivalent Cu(1) atoms to form distorted OEu4Cu2 octahedra that share corners with two equivalent O(1)Eu4Cu2 octahedra, corners with four equivalent O(3)Eu2Cu2 tetrahedra, edges with two equivalent O(1)Eu4Cu2 octahedra, and faces with four equivalent O(1)Eu4Cu2 octahedra. The corner-sharing octahedral tilt angles are 1°. In the second O site, O(2) is bonded in a 4-coordinate geometry to three equivalent Eu(1), one Cu(1), and one Cu(2) atom. In the third O site, O(3) is bonded to two equivalent Eu(1) and two equivalent Cu(2) atoms to form OEu2Cu2 tetrahedra that share corners with eight equivalent O(1)Eu4Cu2 octahedra and corners with two equivalent O(3)Eu2Cu2 tetrahedra. The corner-sharing octahedral tilt angles range from 23-73°. is represented by the CIF card [CIF]
data_Eu2Cu2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.695
_cell_length_b   8.695
_cell_length_c   8.695
_cell_angle_alpha   144.233
_cell_angle_beta   142.810
_cell_angle_gamma   52.553
_symmetry_Int_Tables_number   1
_cell_volume   230.854
_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
  Eu  Eu0  1  0.905  0.391  0.519  1.0
  Eu  Eu1  1  0.095  0.615  0.486  1.0
  Eu  Eu2  1  0.371  0.891  0.486  1.0
  Eu  Eu3  1  0.629  0.115  0.519  1.0
  Cu  Cu4  1  0.000  0.010  0.010  1.0
  Cu  Cu5  1  0.500  0.510  0.010  1.0
  Cu  Cu6  1  0.703  0.720  0.923  1.0
  Cu  Cu7  1  0.297  0.220  0.017  1.0
  O  O8  1  0.265  0.269  0.511  1.0
  O  O9  1  0.735  0.245  0.004  1.0
  O  O10  1  0.259  0.769  0.004  1.0
  O  O11  1  0.741  0.745  0.511  1.0
  O  O12  1  0.925  0.896  0.094  1.0
  O  O13  1  0.075  0.169  0.971  1.0
  O  O14  1  0.302  0.396  0.971  1.0
  O  O15  1  0.698  0.669  0.094  1.0
  O  O16  1  0.645  0.348  0.494  1.0
  O  O17  1  0.355  0.848  0.703  1.0
[/CIF]
.
The crystal structure described by Eu2Cu2O5 crystallizes in the orthorhombic Ima2 space group. Eu(1) is bonded in a 8-coordinate geometry to one O(3), three equivalent O(2), and four equivalent O(1) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CuO6 octahedra that share corners with four equivalent Cu(1)O6 octahedra and corners with two equivalent Cu(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 11°. In the second Cu site, Cu(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form CuO4 tetrahedra that share corners with two equivalent Cu(1)O6 octahedra and corners with two equivalent Cu(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 31°. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Eu(1) and two equivalent Cu(1) atoms to form distorted OEu4Cu2 octahedra that share corners with two equivalent O(1)Eu4Cu2 octahedra, corners with four equivalent O(3)Eu2Cu2 tetrahedra, edges with two equivalent O(1)Eu4Cu2 octahedra, and faces with four equivalent O(1)Eu4Cu2 octahedra. The corner-sharing octahedral tilt angles are 1°. In the second O site, O(2) is bonded in a 4-coordinate geometry to three equivalent Eu(1), one Cu(1), and one Cu(2) atom. In the third O site, O(3) is bonded to two equivalent Eu(1) and two equivalent Cu(2) atoms to form OEu2Cu2 tetrahedra that share corners with eight equivalent O(1)Eu4Cu2 octahedra and corners with two equivalent O(3)Eu2Cu2 tetrahedra. The corner-sharing octahedral tilt angles range from 23-73°. is represented by the CIF card [CIF]
data_Eu2Cu2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.695
_cell_length_b   8.695
_cell_length_c   8.695
_cell_angle_alpha   144.233
_cell_angle_beta   142.810
_cell_angle_gamma   52.553
_symmetry_Int_Tables_number   1
_cell_volume   230.854
_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
  Eu  Eu0  1  0.905  0.391  0.519  1.0
  Eu  Eu1  1  0.095  0.615  0.486  1.0
  Eu  Eu2  1  0.371  0.891  0.486  1.0
  Eu  Eu3  1  0.629  0.115  0.519  1.0
  Cu  Cu4  1  0.000  0.010  0.010  1.0
  Cu  Cu5  1  0.500  0.510  0.010  1.0
  Cu  Cu6  1  0.703  0.720  0.923  1.0
  Cu  Cu7  1  0.297  0.220  0.017  1.0
  O  O8  1  0.265  0.269  0.511  1.0
  O  O9  1  0.735  0.245  0.004  1.0
  O  O10  1  0.259  0.769  0.004  1.0
  O  O11  1  0.741  0.745  0.511  1.0
  O  O12  1  0.925  0.896  0.094  1.0
  O  O13  1  0.075  0.169  0.971  1.0
  O  O14  1  0.302  0.396  0.971  1.0
  O  O15  1  0.698  0.669  0.094  1.0
  O  O16  1  0.645  0.348  0.494  1.0
  O  O17  1  0.355  0.848  0.703  1.0
[/CIF]
.