The crystal structure described by Mg2Fe2O5 is Aluminum carbonitride-like structured and crystallizes in the orthorhombic Pbam space group. Mg(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Fe(1) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Mg(1) and two equivalent Fe(1) atoms to form distorted OMg4Fe2 octahedra that share corners with four equivalent O(3)Mg2Fe2 tetrahedra, corners with eight equivalent O(2)Mg2Fe2 tetrahedra, edges with two equivalent O(1)Mg4Fe2 octahedra, edges with two equivalent O(2)Mg2Fe2 tetrahedra, and edges with four equivalent O(3)Mg2Fe2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Mg(1) and two equivalent Fe(1) atoms to form distorted OMg2Fe2 tetrahedra that share corners with four equivalent O(1)Mg4Fe2 octahedra, corners with four equivalent O(2)Mg2Fe2 tetrahedra, corners with four equivalent O(3)Mg2Fe2 tetrahedra,  an edgeedge with one O(1)Mg4Fe2 octahedra, and edges with two equivalent O(3)Mg2Fe2 tetrahedra. The corner-sharing octahedral tilt angles range from 28-60°. In the third O site, O(3) is bonded to two equivalent Mg(1) and two equivalent Fe(1) atoms to form OMg2Fe2 tetrahedra that share corners with two equivalent O(1)Mg4Fe2 octahedra, corners with two equivalent O(3)Mg2Fe2 tetrahedra, corners with four equivalent O(2)Mg2Fe2 tetrahedra, edges with two equivalent O(1)Mg4Fe2 octahedra,  an edgeedge with one O(3)Mg2Fe2 tetrahedra, and edges with two equivalent O(2)Mg2Fe2 tetrahedra. The corner-sharing octahedral tilt angles are 52°. is represented by the CIF card [CIF]
data_Mg2Fe2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.536
_cell_length_b   5.610
_cell_length_c   10.602
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   210.270
_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
  Mg  Mg0  1  0.500  0.791  0.902  1.0
  Mg  Mg1  1  0.500  0.209  0.098  1.0
  Mg  Mg2  1  0.500  0.291  0.598  1.0
  Mg  Mg3  1  0.500  0.709  0.402  1.0
  Fe  Fe4  1  0.000  0.760  0.640  1.0
  Fe  Fe5  1  0.000  0.240  0.360  1.0
  Fe  Fe6  1  0.000  0.740  0.140  1.0
  Fe  Fe7  1  0.000  0.260  0.860  1.0
  O  O8  1  0.000  0.000  0.500  1.0
  O  O9  1  0.000  0.640  0.309  1.0
  O  O10  1  0.000  0.140  0.191  1.0
  O  O11  1  0.000  0.860  0.809  1.0
  O  O12  1  0.500  0.834  0.090  1.0
  O  O13  1  0.500  0.166  0.910  1.0
  O  O14  1  0.000  0.360  0.691  1.0
  O  O15  1  0.500  0.666  0.590  1.0
  O  O16  1  0.000  0.500  0.000  1.0
  O  O17  1  0.500  0.334  0.410  1.0
[/CIF]
.
The crystal structure described by Mg2Fe2O5 is Aluminum carbonitride-like structured and crystallizes in the orthorhombic Pbam space group. Mg(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Fe(1) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Mg(1) and two equivalent Fe(1) atoms to form distorted OMg4Fe2 octahedra that share corners with four equivalent O(3)Mg2Fe2 tetrahedra, corners with eight equivalent O(2)Mg2Fe2 tetrahedra, edges with two equivalent O(1)Mg4Fe2 octahedra, edges with two equivalent O(2)Mg2Fe2 tetrahedra, and edges with four equivalent O(3)Mg2Fe2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Mg(1) and two equivalent Fe(1) atoms to form distorted OMg2Fe2 tetrahedra that share corners with four equivalent O(1)Mg4Fe2 octahedra, corners with four equivalent O(2)Mg2Fe2 tetrahedra, corners with four equivalent O(3)Mg2Fe2 tetrahedra,  an edgeedge with one O(1)Mg4Fe2 octahedra, and edges with two equivalent O(3)Mg2Fe2 tetrahedra. The corner-sharing octahedral tilt angles range from 28-60°. In the third O site, O(3) is bonded to two equivalent Mg(1) and two equivalent Fe(1) atoms to form OMg2Fe2 tetrahedra that share corners with two equivalent O(1)Mg4Fe2 octahedra, corners with two equivalent O(3)Mg2Fe2 tetrahedra, corners with four equivalent O(2)Mg2Fe2 tetrahedra, edges with two equivalent O(1)Mg4Fe2 octahedra,  an edgeedge with one O(3)Mg2Fe2 tetrahedra, and edges with two equivalent O(2)Mg2Fe2 tetrahedra. The corner-sharing octahedral tilt angles are 52°. is represented by the CIF card [CIF]
data_Mg2Fe2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.536
_cell_length_b   5.610
_cell_length_c   10.602
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   210.270
_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
  Mg  Mg0  1  0.500  0.791  0.902  1.0
  Mg  Mg1  1  0.500  0.209  0.098  1.0
  Mg  Mg2  1  0.500  0.291  0.598  1.0
  Mg  Mg3  1  0.500  0.709  0.402  1.0
  Fe  Fe4  1  0.000  0.760  0.640  1.0
  Fe  Fe5  1  0.000  0.240  0.360  1.0
  Fe  Fe6  1  0.000  0.740  0.140  1.0
  Fe  Fe7  1  0.000  0.260  0.860  1.0
  O  O8  1  0.000  0.000  0.500  1.0
  O  O9  1  0.000  0.640  0.309  1.0
  O  O10  1  0.000  0.140  0.191  1.0
  O  O11  1  0.000  0.860  0.809  1.0
  O  O12  1  0.500  0.834  0.090  1.0
  O  O13  1  0.500  0.166  0.910  1.0
  O  O14  1  0.000  0.360  0.691  1.0
  O  O15  1  0.500  0.666  0.590  1.0
  O  O16  1  0.000  0.500  0.000  1.0
  O  O17  1  0.500  0.334  0.410  1.0
[/CIF]
.