The structure described by MgLa4CoO8 is (La,Ba)CuO4-derived structured and crystallizes in the monoclinic P2/m space group. Mg(1) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form MgO6 octahedra that share corners with four equivalent Co(1)O6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent O(3), three equivalent O(2), and four equivalent O(1) atoms. In the second La site, La(2) is bonded in a 9-coordinate geometry to two equivalent O(2), three equivalent O(3), and four equivalent O(1) atoms. Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CoO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra. The corner-sharing octahedra are not tilted. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), two equivalent La(1), two equivalent La(2), and one Co(1) atom to form distorted OLa4MgCo octahedra that share corners with two equivalent O(1)La4MgCo octahedra, corners with six equivalent O(3)La5Mg octahedra, edges with two equivalent O(1)La4MgCo octahedra, faces with two equivalent O(3)La5Mg octahedra, and faces with four equivalent O(1)La4MgCo octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the second O site, O(2) is bonded in a 6-coordinate geometry to two equivalent La(2), three equivalent La(1), and one Co(1) atom. In the third O site, O(3) is bonded to one Mg(1), two equivalent La(1), and three equivalent La(2) atoms to form distorted OLa5Mg octahedra that share corners with five equivalent O(3)La5Mg octahedra, corners with twelve equivalent O(1)La4MgCo octahedra, edges with two equivalent O(3)La5Mg octahedra, and faces with four equivalent O(1)La4MgCo octahedra. The corner-sharing octahedral tilt angles range from 0-50°. is represented by the CIF file [CIF]
data_La4MgCoO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.537
_cell_length_b   6.906
_cell_length_c   6.903
_cell_angle_alpha   47.292
_cell_angle_beta   89.995
_cell_angle_gamma   89.994
_symmetry_Int_Tables_number   1
_cell_volume   193.941
_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  0.500  0.638  0.636  1.0
  La  La1  1  1.000  0.862  0.862  1.0
  La  La2  1  0.000  0.138  0.138  1.0
  La  La3  1  0.500  0.362  0.364  1.0
  Mg  Mg4  1  0.000  0.500  0.500  1.0
  Co  Co5  1  0.500  0.000  0.000  1.0
  O  O6  1  0.752  0.749  0.251  1.0
  O  O7  1  0.752  0.251  0.749  1.0
  O  O8  1  0.500  0.819  0.817  1.0
  O  O9  1  0.500  0.181  0.183  1.0
  O  O10  1  0.248  0.251  0.749  1.0
  O  O11  1  1.000  0.321  0.321  1.0
  O  O12  1  0.000  0.679  0.679  1.0
  O  O13  1  0.248  0.749  0.251  1.0
[/CIF]
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The structure described by MgLa4CoO8 is (La,Ba)CuO4-derived structured and crystallizes in the monoclinic P2/m space group. Mg(1) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form MgO6 octahedra that share corners with four equivalent Co(1)O6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent O(3), three equivalent O(2), and four equivalent O(1) atoms. In the second La site, La(2) is bonded in a 9-coordinate geometry to two equivalent O(2), three equivalent O(3), and four equivalent O(1) atoms. Co(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form CoO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra. The corner-sharing octahedra are not tilted. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), two equivalent La(1), two equivalent La(2), and one Co(1) atom to form distorted OLa4MgCo octahedra that share corners with two equivalent O(1)La4MgCo octahedra, corners with six equivalent O(3)La5Mg octahedra, edges with two equivalent O(1)La4MgCo octahedra, faces with two equivalent O(3)La5Mg octahedra, and faces with four equivalent O(1)La4MgCo octahedra. The corner-sharing octahedral tilt angles range from 0-50°. In the second O site, O(2) is bonded in a 6-coordinate geometry to two equivalent La(2), three equivalent La(1), and one Co(1) atom. In the third O site, O(3) is bonded to one Mg(1), two equivalent La(1), and three equivalent La(2) atoms to form distorted OLa5Mg octahedra that share corners with five equivalent O(3)La5Mg octahedra, corners with twelve equivalent O(1)La4MgCo octahedra, edges with two equivalent O(3)La5Mg octahedra, and faces with four equivalent O(1)La4MgCo octahedra. The corner-sharing octahedral tilt angles range from 0-50°. is represented by the CIF file [CIF]
data_La4MgCoO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.537
_cell_length_b   6.906
_cell_length_c   6.903
_cell_angle_alpha   47.292
_cell_angle_beta   89.995
_cell_angle_gamma   89.994
_symmetry_Int_Tables_number   1
_cell_volume   193.941
_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  0.500  0.638  0.636  1.0
  La  La1  1  1.000  0.862  0.862  1.0
  La  La2  1  0.000  0.138  0.138  1.0
  La  La3  1  0.500  0.362  0.364  1.0
  Mg  Mg4  1  0.000  0.500  0.500  1.0
  Co  Co5  1  0.500  0.000  0.000  1.0
  O  O6  1  0.752  0.749  0.251  1.0
  O  O7  1  0.752  0.251  0.749  1.0
  O  O8  1  0.500  0.819  0.817  1.0
  O  O9  1  0.500  0.181  0.183  1.0
  O  O10  1  0.248  0.251  0.749  1.0
  O  O11  1  1.000  0.321  0.321  1.0
  O  O12  1  0.000  0.679  0.679  1.0
  O  O13  1  0.248  0.749  0.251  1.0
[/CIF]
.