The structure described by MgLa4FeO8 crystallizes in the orthorhombic Cmmm space group. Mg(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 5-coordinate geometry to two equivalent O(2) and three equivalent O(3) atoms. In the second La site, La(2) is bonded in a 9-coordinate geometry to two equivalent O(3), three equivalent O(2), and four equivalent O(1) atoms. Fe(1) is bonded in a distorted octahedral geometry to two equivalent O(3) and four equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), two equivalent La(2), and one Fe(1) atom. In the second O site, O(2) is bonded to two equivalent La(1) and three equivalent La(2) atoms to form distorted OLa5 trigonal bipyramids that share corners with four equivalent O(2)La5 trigonal bipyramids, edges with six equivalent O(3)La5Fe octahedra, and edges with two equivalent O(2)La5 trigonal bipyramids. In the third O site, O(3) is bonded to two equivalent La(2), three equivalent La(1), and one Fe(1) atom to form distorted OLa5Fe octahedra that share corners with five equivalent O(3)La5Fe octahedra, edges with two equivalent O(3)La5Fe octahedra, and edges with six equivalent O(2)La5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 0-36°. is represented by the Crystallographic Information File (CIF) [CIF]
data_La4MgFeO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.590
_cell_length_b   7.985
_cell_length_c   5.087
_cell_angle_alpha   89.893
_cell_angle_beta   89.961
_cell_angle_gamma   110.488
_symmetry_Int_Tables_number   1
_cell_volume   212.706
_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
  La  La0  1  0.181  0.362  0.500  1.0
  La  La1  1  0.619  0.238  0.000  1.0
  La  La2  1  0.381  0.762  1.000  1.0
  La  La3  1  0.819  0.638  0.500  1.0
  Mg  Mg4  1  0.000  1.000  0.500  1.0
  Fe  Fe5  1  0.500  1.000  0.500  1.0
  O  O6  1  0.253  1.000  0.240  1.0
  O  O7  1  0.253  0.001  0.760  1.0
  O  O8  1  0.747  0.999  0.240  1.0
  O  O9  1  0.747  0.000  0.760  1.0
  O  O10  1  0.201  0.402  0.000  1.0
  O  O11  1  0.674  0.347  0.500  1.0
  O  O12  1  0.326  0.653  0.500  1.0
  O  O13  1  0.799  0.598  1.000  1.0
[/CIF]
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The structure described by MgLa4FeO8 crystallizes in the orthorhombic Cmmm space group. Mg(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 5-coordinate geometry to two equivalent O(2) and three equivalent O(3) atoms. In the second La site, La(2) is bonded in a 9-coordinate geometry to two equivalent O(3), three equivalent O(2), and four equivalent O(1) atoms. Fe(1) is bonded in a distorted octahedral geometry to two equivalent O(3) and four equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), two equivalent La(2), and one Fe(1) atom. In the second O site, O(2) is bonded to two equivalent La(1) and three equivalent La(2) atoms to form distorted OLa5 trigonal bipyramids that share corners with four equivalent O(2)La5 trigonal bipyramids, edges with six equivalent O(3)La5Fe octahedra, and edges with two equivalent O(2)La5 trigonal bipyramids. In the third O site, O(3) is bonded to two equivalent La(2), three equivalent La(1), and one Fe(1) atom to form distorted OLa5Fe octahedra that share corners with five equivalent O(3)La5Fe octahedra, edges with two equivalent O(3)La5Fe octahedra, and edges with six equivalent O(2)La5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 0-36°. is represented by the Crystallographic Information File (CIF) [CIF]
data_La4MgFeO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.590
_cell_length_b   7.985
_cell_length_c   5.087
_cell_angle_alpha   89.893
_cell_angle_beta   89.961
_cell_angle_gamma   110.488
_symmetry_Int_Tables_number   1
_cell_volume   212.706
_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
  La  La0  1  0.181  0.362  0.500  1.0
  La  La1  1  0.619  0.238  0.000  1.0
  La  La2  1  0.381  0.762  1.000  1.0
  La  La3  1  0.819  0.638  0.500  1.0
  Mg  Mg4  1  0.000  1.000  0.500  1.0
  Fe  Fe5  1  0.500  1.000  0.500  1.0
  O  O6  1  0.253  1.000  0.240  1.0
  O  O7  1  0.253  0.001  0.760  1.0
  O  O8  1  0.747  0.999  0.240  1.0
  O  O9  1  0.747  0.000  0.760  1.0
  O  O10  1  0.201  0.402  0.000  1.0
  O  O11  1  0.674  0.347  0.500  1.0
  O  O12  1  0.326  0.653  0.500  1.0
  O  O13  1  0.799  0.598  1.000  1.0
[/CIF]
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