The structure described by MgZn(CoO2)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a see-saw-like geometry to one O(5), one O(8), and two equivalent O(1) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(7), two equivalent O(4), and two equivalent O(5) atoms to form CoO6 octahedra that share corners with two equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Zn(1)O5 square pyramids. In the second Co site, Co(2) is bonded to one O(4), one O(8), and two equivalent O(3) atoms to form CoO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(4)O6 octahedra,  a cornercorner with one Zn(1)O5 square pyramid, and corners with two equivalent Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-58°. In the third Co site, Co(3) is bonded in a 6-coordinate geometry to one O(1), one O(6), two equivalent O(2), and two equivalent O(8) atoms. In the fourth Co site, Co(4) is bonded to one O(3), one O(5), two equivalent O(1), and two equivalent O(7) atoms to form distorted CoO6 octahedra that share corners with two equivalent Zn(1)O5 square pyramids, corners with two equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and  an edgeedge with one Zn(1)O5 square pyramid. Zn(1) is bonded to one O(4), two equivalent O(6), and two equivalent O(7) atoms to form distorted ZnO5 square pyramids that share corners with two equivalent Co(4)O6 octahedra,  a cornercorner with one Co(2)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Zn(1)O5 square pyramids. The corner-sharing octahedral tilt angles are 16°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one Co(3), and two equivalent Co(4) atoms. In the second O site, O(2) is bonded in a trigonal planar geometry to one Co(1) and two equivalent Co(3) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to one Co(4) and two equivalent Co(2) atoms. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), two equivalent Co(1), and one Zn(1) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Co(4), and two equivalent Co(1) atoms to form OMgCo3 trigonal pyramids that share corners with two equivalent O(5)MgCo3 trigonal pyramids and edges with two equivalent O(7)Zn2Co3 square pyramids. In the sixth O site, O(6) is bonded in a trigonal non-coplanar geometry to one Co(3) and two equivalent Zn(1) atoms. In the seventh O site, O(7) is bonded to one Co(1), two equivalent Co(4), and two equivalent Zn(1) atoms to form OZn2Co3 square pyramids that share edges with two equivalent O(7)Zn2Co3 square pyramids and edges with two equivalent O(5)MgCo3 trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Co(2), and two equivalent Co(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgZn(CoO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.072
_cell_length_b   7.294
_cell_length_c   7.647
_cell_angle_alpha   80.197
_cell_angle_beta   78.336
_cell_angle_gamma   77.883
_symmetry_Int_Tables_number   1
_cell_volume   162.614
_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  0.195  0.783  0.823  1.0
  Zn  Zn1  1  0.344  0.125  0.180  1.0
  Co  Co2  1  0.642  0.175  0.539  1.0
  Co  Co3  1  0.113  0.536  0.235  1.0
  Co  Co4  1  0.879  0.389  0.849  1.0
  Co  Co5  1  0.345  0.821  0.487  1.0
  O  O6  1  0.808  0.710  0.670  1.0
  O  O7  1  0.474  0.343  0.705  1.0
  O  O8  1  0.514  0.674  0.294  1.0
  O  O9  1  0.159  0.308  0.373  1.0
  O  O10  1  0.162  0.024  0.651  1.0
  O  O11  1  0.904  0.172  0.014  1.0
  O  O12  1  0.819  0.992  0.369  1.0
  O  O13  1  0.231  0.546  0.987  1.0
[/CIF]
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The structure described by MgZn(CoO2)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a see-saw-like geometry to one O(5), one O(8), and two equivalent O(1) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(2), one O(7), two equivalent O(4), and two equivalent O(5) atoms to form CoO6 octahedra that share corners with two equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Zn(1)O5 square pyramids. In the second Co site, Co(2) is bonded to one O(4), one O(8), and two equivalent O(3) atoms to form CoO4 tetrahedra that share corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(4)O6 octahedra,  a cornercorner with one Zn(1)O5 square pyramid, and corners with two equivalent Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-58°. In the third Co site, Co(3) is bonded in a 6-coordinate geometry to one O(1), one O(6), two equivalent O(2), and two equivalent O(8) atoms. In the fourth Co site, Co(4) is bonded to one O(3), one O(5), two equivalent O(1), and two equivalent O(7) atoms to form distorted CoO6 octahedra that share corners with two equivalent Zn(1)O5 square pyramids, corners with two equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and  an edgeedge with one Zn(1)O5 square pyramid. Zn(1) is bonded to one O(4), two equivalent O(6), and two equivalent O(7) atoms to form distorted ZnO5 square pyramids that share corners with two equivalent Co(4)O6 octahedra,  a cornercorner with one Co(2)O4 tetrahedra,  an edgeedge with one Co(4)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Zn(1)O5 square pyramids. The corner-sharing octahedral tilt angles are 16°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one Co(3), and two equivalent Co(4) atoms. In the second O site, O(2) is bonded in a trigonal planar geometry to one Co(1) and two equivalent Co(3) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to one Co(4) and two equivalent Co(2) atoms. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), two equivalent Co(1), and one Zn(1) atom. In the fifth O site, O(5) is bonded to one Mg(1), one Co(4), and two equivalent Co(1) atoms to form OMgCo3 trigonal pyramids that share corners with two equivalent O(5)MgCo3 trigonal pyramids and edges with two equivalent O(7)Zn2Co3 square pyramids. In the sixth O site, O(6) is bonded in a trigonal non-coplanar geometry to one Co(3) and two equivalent Zn(1) atoms. In the seventh O site, O(7) is bonded to one Co(1), two equivalent Co(4), and two equivalent Zn(1) atoms to form OZn2Co3 square pyramids that share edges with two equivalent O(7)Zn2Co3 square pyramids and edges with two equivalent O(5)MgCo3 trigonal pyramids. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Co(2), and two equivalent Co(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgZn(CoO2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.072
_cell_length_b   7.294
_cell_length_c   7.647
_cell_angle_alpha   80.197
_cell_angle_beta   78.336
_cell_angle_gamma   77.883
_symmetry_Int_Tables_number   1
_cell_volume   162.614
_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  0.195  0.783  0.823  1.0
  Zn  Zn1  1  0.344  0.125  0.180  1.0
  Co  Co2  1  0.642  0.175  0.539  1.0
  Co  Co3  1  0.113  0.536  0.235  1.0
  Co  Co4  1  0.879  0.389  0.849  1.0
  Co  Co5  1  0.345  0.821  0.487  1.0
  O  O6  1  0.808  0.710  0.670  1.0
  O  O7  1  0.474  0.343  0.705  1.0
  O  O8  1  0.514  0.674  0.294  1.0
  O  O9  1  0.159  0.308  0.373  1.0
  O  O10  1  0.162  0.024  0.651  1.0
  O  O11  1  0.904  0.172  0.014  1.0
  O  O12  1  0.819  0.992  0.369  1.0
  O  O13  1  0.231  0.546  0.987  1.0
[/CIF]
.