The material structure described by MgFe2(CoO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(4), one O(5), and one O(6) atom to form distorted MgO5 trigonal bipyramids that share corners with three equivalent Co(2)O6 octahedra,  a cornercorner with one Co(1)O5 square pyramid, corners with three equivalent Fe(2)O5 trigonal bipyramids, and  an edgeedge with one Co(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 36-67°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), one O(7), and one O(8) atom. In the second Fe site, Fe(2) is bonded to one O(1), one O(4), one O(5), one O(7), and one O(8) atom to form distorted FeO5 trigonal bipyramids that share corners with three equivalent Co(2)O6 octahedra, corners with two equivalent Co(1)O5 square pyramids, and corners with three equivalent Mg(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 48-50°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(2), one O(3), one O(6), and one O(7) atom to form distorted CoO5 square pyramids that share  a cornercorner with one Mg(1)O5 trigonal bipyramid, corners with two equivalent Fe(2)O5 trigonal bipyramids, edges with two equivalent Co(2)O6 octahedra, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. In the second Co site, Co(2) is bonded to one O(2), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form CoO6 octahedra that share corners with three equivalent Mg(1)O5 trigonal bipyramids, corners with three equivalent Fe(2)O5 trigonal bipyramids, and edges with two equivalent Co(1)O5 square pyramids. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Mg(1), one Fe(2), and one Co(1) atom. In the second O site, O(2) is bonded in a tetrahedral geometry to one Mg(1), one Fe(1), one Co(1), and one Co(2) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Fe(1), one Co(1), and one Co(2) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Fe(1), and one Fe(2) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mg(1), one Fe(2), and one Co(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one Co(1), and one Co(2) atom. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Fe(1), one Fe(2), one Co(1), and one Co(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Fe(1), one Fe(2), and one Co(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgFe2(CoO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.364
_cell_length_b   5.771
_cell_length_c   4.877
_cell_angle_alpha   96.213
_cell_angle_beta   85.298
_cell_angle_gamma   104.977
_symmetry_Int_Tables_number   1
_cell_volume   144.777
_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
  Mg  Mg0  1  0.374  0.039  0.617  1.0
  Fe  Fe1  1  0.197  0.728  0.085  1.0
  Fe  Fe2  1  0.793  0.094  0.056  1.0
  Co  Co3  1  0.214  0.428  0.517  1.0
  Co  Co4  1  0.759  0.655  0.510  1.0
  O  O5  1  0.074  0.218  0.754  1.0
  O  O6  1  0.113  0.720  0.708  1.0
  O  O7  1  0.426  0.573  0.257  1.0
  O  O8  1  0.437  0.041  0.199  1.0
  O  O9  1  0.644  0.893  0.736  1.0
  O  O10  1  0.539  0.412  0.666  1.0
  O  O11  1  0.937  0.428  0.278  1.0
  O  O12  1  0.923  0.877  0.257  1.0
[/CIF]
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The material structure described by MgFe2(CoO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(4), one O(5), and one O(6) atom to form distorted MgO5 trigonal bipyramids that share corners with three equivalent Co(2)O6 octahedra,  a cornercorner with one Co(1)O5 square pyramid, corners with three equivalent Fe(2)O5 trigonal bipyramids, and  an edgeedge with one Co(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 36-67°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), one O(7), and one O(8) atom. In the second Fe site, Fe(2) is bonded to one O(1), one O(4), one O(5), one O(7), and one O(8) atom to form distorted FeO5 trigonal bipyramids that share corners with three equivalent Co(2)O6 octahedra, corners with two equivalent Co(1)O5 square pyramids, and corners with three equivalent Mg(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 48-50°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(2), one O(3), one O(6), and one O(7) atom to form distorted CoO5 square pyramids that share  a cornercorner with one Mg(1)O5 trigonal bipyramid, corners with two equivalent Fe(2)O5 trigonal bipyramids, edges with two equivalent Co(2)O6 octahedra, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. In the second Co site, Co(2) is bonded to one O(2), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form CoO6 octahedra that share corners with three equivalent Mg(1)O5 trigonal bipyramids, corners with three equivalent Fe(2)O5 trigonal bipyramids, and edges with two equivalent Co(1)O5 square pyramids. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Mg(1), one Fe(2), and one Co(1) atom. In the second O site, O(2) is bonded in a tetrahedral geometry to one Mg(1), one Fe(1), one Co(1), and one Co(2) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Fe(1), one Co(1), and one Co(2) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Fe(1), and one Fe(2) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mg(1), one Fe(2), and one Co(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one Co(1), and one Co(2) atom. In the seventh O site, O(7) is bonded in a rectangular see-saw-like geometry to one Fe(1), one Fe(2), one Co(1), and one Co(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Fe(1), one Fe(2), and one Co(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgFe2(CoO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.364
_cell_length_b   5.771
_cell_length_c   4.877
_cell_angle_alpha   96.213
_cell_angle_beta   85.298
_cell_angle_gamma   104.977
_symmetry_Int_Tables_number   1
_cell_volume   144.777
_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
  Mg  Mg0  1  0.374  0.039  0.617  1.0
  Fe  Fe1  1  0.197  0.728  0.085  1.0
  Fe  Fe2  1  0.793  0.094  0.056  1.0
  Co  Co3  1  0.214  0.428  0.517  1.0
  Co  Co4  1  0.759  0.655  0.510  1.0
  O  O5  1  0.074  0.218  0.754  1.0
  O  O6  1  0.113  0.720  0.708  1.0
  O  O7  1  0.426  0.573  0.257  1.0
  O  O8  1  0.437  0.041  0.199  1.0
  O  O9  1  0.644  0.893  0.736  1.0
  O  O10  1  0.539  0.412  0.666  1.0
  O  O11  1  0.937  0.428  0.278  1.0
  O  O12  1  0.923  0.877  0.257  1.0
[/CIF]
.