The crystal structure described by MgCo4(Te2O5)4 crystallizes in the monoclinic P2 space group. Mg(1) is bonded in a 2-coordinate geometry to two equivalent O(5) and two equivalent O(9) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form edge-sharing CoO6 octahedra. In the second Co site, Co(2) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms to form distorted edge-sharing CoO6 pentagonal pyramids. In the third Co site, Co(3) is bonded to two equivalent O(10), two equivalent O(8), and two equivalent O(9) atoms to form distorted edge-sharing CoO6 octahedra. In the fourth Co site, Co(4) is bonded to two equivalent O(10), two equivalent O(7), and two equivalent O(9) atoms to form distorted edge-sharing CoO6 pentagonal pyramids. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(5), one O(7), and one O(9) atom. In the second Te site, Te(2) is bonded in a distorted see-saw-like geometry to one O(10), one O(2), one O(6), and one O(8) atom. In the third Te site, Te(3) is bonded in a 3-coordinate geometry to one O(12), one O(3), one O(5), and one O(7) atom. In the fourth Te site, Te(4) is bonded in a 3-coordinate geometry to one O(11), one O(4), one O(6), and one O(8) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent Te(1) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Te(2) atoms. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Co(1), one Co(2), and one Te(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), and one Te(4) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Mg(1), one Co(1), one Te(1), and one Te(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Co(2), one Te(2), and one Te(4) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Co(4), one Te(1), and one Te(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Co(3), one Te(2), and one Te(4) atom. In the ninth O site, O(9) is bonded to one Mg(1), one Co(3), one Co(4), and one Te(1) atom to form a mixture of distorted edge and corner-sharing OMgCo2Te tetrahedra. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Co(3), one Co(4), and one Te(2) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to two equivalent Te(4) atoms. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to two equivalent Te(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgCo4(Te2O5)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.579
_cell_length_b   10.666
_cell_length_c   6.263
_cell_angle_alpha   90.000
_cell_angle_beta   92.150
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   505.974
_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  0.500  0.305  0.250  1.0
  Co  Co1  1  0.000  0.069  0.250  1.0
  Co  Co2  1  0.000  0.947  0.750  1.0
  Co  Co3  1  0.500  0.575  0.250  1.0
  Co  Co4  1  0.500  0.434  0.750  1.0
  Te  Te5  1  0.138  0.345  0.494  1.0
  Te  Te6  1  0.139  0.657  0.986  1.0
  Te  Te7  1  0.343  0.133  0.960  1.0
  Te  Te8  1  0.367  0.848  0.482  1.0
  Te  Te9  1  0.657  0.133  0.540  1.0
  Te  Te10  1  0.633  0.848  0.018  1.0
  Te  Te11  1  0.861  0.657  0.514  1.0
  Te  Te12  1  0.862  0.345  0.006  1.0
  O  O13  1  0.000  0.435  0.250  1.0
  O  O14  1  0.000  0.566  0.750  1.0
  O  O15  1  0.093  0.092  0.946  1.0
  O  O16  1  0.153  0.935  0.442  1.0
  O  O17  1  0.201  0.208  0.324  1.0
  O  O18  1  0.191  0.803  0.825  1.0
  O  O19  1  0.315  0.283  0.775  1.0
  O  O20  1  0.309  0.706  0.305  1.0
  O  O21  1  0.364  0.428  0.431  1.0
  O  O22  1  0.351  0.563  0.947  1.0
  O  O23  1  0.500  0.938  0.250  1.0
  O  O24  1  0.500  0.042  0.750  1.0
  O  O25  1  0.636  0.428  0.069  1.0
  O  O26  1  0.649  0.563  0.553  1.0
  O  O27  1  0.685  0.283  0.725  1.0
  O  O28  1  0.691  0.706  0.195  1.0
  O  O29  1  0.799  0.208  0.176  1.0
  O  O30  1  0.809  0.803  0.675  1.0
  O  O31  1  0.907  0.092  0.554  1.0
  O  O32  1  0.847  0.935  0.058  1.0
[/CIF]
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The crystal structure described by MgCo4(Te2O5)4 crystallizes in the monoclinic P2 space group. Mg(1) is bonded in a 2-coordinate geometry to two equivalent O(5) and two equivalent O(9) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form edge-sharing CoO6 octahedra. In the second Co site, Co(2) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms to form distorted edge-sharing CoO6 pentagonal pyramids. In the third Co site, Co(3) is bonded to two equivalent O(10), two equivalent O(8), and two equivalent O(9) atoms to form distorted edge-sharing CoO6 octahedra. In the fourth Co site, Co(4) is bonded to two equivalent O(10), two equivalent O(7), and two equivalent O(9) atoms to form distorted edge-sharing CoO6 pentagonal pyramids. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(5), one O(7), and one O(9) atom. In the second Te site, Te(2) is bonded in a distorted see-saw-like geometry to one O(10), one O(2), one O(6), and one O(8) atom. In the third Te site, Te(3) is bonded in a 3-coordinate geometry to one O(12), one O(3), one O(5), and one O(7) atom. In the fourth Te site, Te(4) is bonded in a 3-coordinate geometry to one O(11), one O(4), one O(6), and one O(8) atom. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent Te(1) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Te(2) atoms. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Co(1), one Co(2), and one Te(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Co(1), one Co(2), and one Te(4) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Mg(1), one Co(1), one Te(1), and one Te(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Co(2), one Te(2), and one Te(4) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Co(4), one Te(1), and one Te(3) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Co(3), one Te(2), and one Te(4) atom. In the ninth O site, O(9) is bonded to one Mg(1), one Co(3), one Co(4), and one Te(1) atom to form a mixture of distorted edge and corner-sharing OMgCo2Te tetrahedra. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Co(3), one Co(4), and one Te(2) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to two equivalent Te(4) atoms. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to two equivalent Te(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgCo4(Te2O5)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.579
_cell_length_b   10.666
_cell_length_c   6.263
_cell_angle_alpha   90.000
_cell_angle_beta   92.150
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   505.974
_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  0.500  0.305  0.250  1.0
  Co  Co1  1  0.000  0.069  0.250  1.0
  Co  Co2  1  0.000  0.947  0.750  1.0
  Co  Co3  1  0.500  0.575  0.250  1.0
  Co  Co4  1  0.500  0.434  0.750  1.0
  Te  Te5  1  0.138  0.345  0.494  1.0
  Te  Te6  1  0.139  0.657  0.986  1.0
  Te  Te7  1  0.343  0.133  0.960  1.0
  Te  Te8  1  0.367  0.848  0.482  1.0
  Te  Te9  1  0.657  0.133  0.540  1.0
  Te  Te10  1  0.633  0.848  0.018  1.0
  Te  Te11  1  0.861  0.657  0.514  1.0
  Te  Te12  1  0.862  0.345  0.006  1.0
  O  O13  1  0.000  0.435  0.250  1.0
  O  O14  1  0.000  0.566  0.750  1.0
  O  O15  1  0.093  0.092  0.946  1.0
  O  O16  1  0.153  0.935  0.442  1.0
  O  O17  1  0.201  0.208  0.324  1.0
  O  O18  1  0.191  0.803  0.825  1.0
  O  O19  1  0.315  0.283  0.775  1.0
  O  O20  1  0.309  0.706  0.305  1.0
  O  O21  1  0.364  0.428  0.431  1.0
  O  O22  1  0.351  0.563  0.947  1.0
  O  O23  1  0.500  0.938  0.250  1.0
  O  O24  1  0.500  0.042  0.750  1.0
  O  O25  1  0.636  0.428  0.069  1.0
  O  O26  1  0.649  0.563  0.553  1.0
  O  O27  1  0.685  0.283  0.725  1.0
  O  O28  1  0.691  0.706  0.195  1.0
  O  O29  1  0.799  0.208  0.176  1.0
  O  O30  1  0.809  0.803  0.675  1.0
  O  O31  1  0.907  0.092  0.554  1.0
  O  O32  1  0.847  0.935  0.058  1.0
[/CIF]
.