The structure described by Eu2Mn2O5 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 Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form MnO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 12°. In the second Mn site, Mn(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form MnO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 32°. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Eu(1) and two equivalent Mn(1) atoms to form distorted OEu4Mn2 octahedra that share corners with two equivalent O(1)Eu4Mn2 octahedra, corners with four equivalent O(3)Eu2Mn2 tetrahedra, edges with two equivalent O(1)Eu4Mn2 octahedra, and faces with four equivalent O(1)Eu4Mn2 octahedra. The corner-sharing octahedral tilt angles are 2°. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Eu(1), one Mn(1), and one Mn(2) atom. In the third O site, O(3) is bonded to two equivalent Eu(1) and two equivalent Mn(2) atoms to form OEu2Mn2 tetrahedra that share corners with eight equivalent O(1)Eu4Mn2 octahedra and corners with two equivalent O(3)Eu2Mn2 tetrahedra. The corner-sharing octahedral tilt angles range from 24-73°. is represented by the CIF card [CIF]
data_Eu2Mn2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.888
_cell_length_b   8.888
_cell_length_c   8.888
_cell_angle_alpha   144.056
_cell_angle_beta   142.912
_cell_angle_gamma   52.605
_symmetry_Int_Tables_number   1
_cell_volume   247.059
_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  0.872  0.387  0.480  1.0
  Eu  Eu1  1  0.128  0.608  0.515  1.0
  Eu  Eu2  1  0.407  0.887  0.515  1.0
  Eu  Eu3  1  0.593  0.108  0.480  1.0
  Mn  Mn4  1  0.000  0.989  0.989  1.0
  Mn  Mn5  1  0.500  0.489  0.989  1.0
  Mn  Mn6  1  0.803  0.777  0.079  1.0
  Mn  Mn7  1  0.197  0.277  0.974  1.0
  O  O8  1  0.759  0.755  0.487  1.0
  O  O9  1  0.241  0.729  0.997  1.0
  O  O10  1  0.768  0.255  0.997  1.0
  O  O11  1  0.232  0.229  0.487  1.0
  O  O12  1  0.804  0.834  0.903  1.0
  O  O13  1  0.196  0.099  0.030  1.0
  O  O14  1  0.431  0.334  0.030  1.0
  O  O15  1  0.569  0.599  0.903  1.0
  O  O16  1  0.846  0.158  0.504  1.0
  O  O17  1  0.154  0.658  0.313  1.0
[/CIF]
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The structure described by Eu2Mn2O5 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 Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form MnO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 12°. In the second Mn site, Mn(2) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form MnO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 32°. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Eu(1) and two equivalent Mn(1) atoms to form distorted OEu4Mn2 octahedra that share corners with two equivalent O(1)Eu4Mn2 octahedra, corners with four equivalent O(3)Eu2Mn2 tetrahedra, edges with two equivalent O(1)Eu4Mn2 octahedra, and faces with four equivalent O(1)Eu4Mn2 octahedra. The corner-sharing octahedral tilt angles are 2°. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Eu(1), one Mn(1), and one Mn(2) atom. In the third O site, O(3) is bonded to two equivalent Eu(1) and two equivalent Mn(2) atoms to form OEu2Mn2 tetrahedra that share corners with eight equivalent O(1)Eu4Mn2 octahedra and corners with two equivalent O(3)Eu2Mn2 tetrahedra. The corner-sharing octahedral tilt angles range from 24-73°. is represented by the CIF card [CIF]
data_Eu2Mn2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.888
_cell_length_b   8.888
_cell_length_c   8.888
_cell_angle_alpha   144.056
_cell_angle_beta   142.912
_cell_angle_gamma   52.605
_symmetry_Int_Tables_number   1
_cell_volume   247.059
_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  0.872  0.387  0.480  1.0
  Eu  Eu1  1  0.128  0.608  0.515  1.0
  Eu  Eu2  1  0.407  0.887  0.515  1.0
  Eu  Eu3  1  0.593  0.108  0.480  1.0
  Mn  Mn4  1  0.000  0.989  0.989  1.0
  Mn  Mn5  1  0.500  0.489  0.989  1.0
  Mn  Mn6  1  0.803  0.777  0.079  1.0
  Mn  Mn7  1  0.197  0.277  0.974  1.0
  O  O8  1  0.759  0.755  0.487  1.0
  O  O9  1  0.241  0.729  0.997  1.0
  O  O10  1  0.768  0.255  0.997  1.0
  O  O11  1  0.232  0.229  0.487  1.0
  O  O12  1  0.804  0.834  0.903  1.0
  O  O13  1  0.196  0.099  0.030  1.0
  O  O14  1  0.431  0.334  0.030  1.0
  O  O15  1  0.569  0.599  0.903  1.0
  O  O16  1  0.846  0.158  0.504  1.0
  O  O17  1  0.154  0.658  0.313  1.0
[/CIF]
.