The compound described by MgZn(CoO2)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), two equivalent O(5), and two equivalent O(6) atoms to form distorted MgO6 octahedra that share corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Zn(1)O5 trigonal bipyramids, edges with two equivalent Mg(1)O6 octahedra,  an edgeedge with one Zn(1)O5 trigonal bipyramid, and  a faceface with one Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 28°. 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 Mg(1)O6 octahedra, corners with two equivalent Co(2)O4 tetrahedra, corners with two equivalent Zn(1)O5 trigonal bipyramids, edges with two equivalent Co(1)O6 octahedra, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles are 28°. 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(2)O4 tetrahedra, and corners with two equivalent Zn(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 49-53°. In the third Co site, Co(3) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(2), and two equivalent O(8) atoms. In the fourth Co site, Co(4) is bonded in a 6-coordinate geometry to one O(3), one O(5), two equivalent O(1), and two equivalent O(7) atoms. Zn(1) is bonded to one O(3), two equivalent O(6), and two equivalent O(7) atoms to form distorted ZnO5 trigonal bipyramids that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra, and edges with two equivalent Zn(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 2-58°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Co(3), and two equivalent Co(4) atoms to form distorted OMgCo3 trigonal pyramids that share corners with two equivalent O(3)ZnCo3 tetrahedra, corners with three equivalent O(2)MgCo3 tetrahedra, corners with two equivalent O(1)MgCo3 trigonal pyramids, and edges with two equivalent O(5)Mg2Co3 square pyramids. In the second O site, O(2) is bonded to one Mg(1), one Co(1), and two equivalent Co(3) atoms to form distorted OMgCo3 tetrahedra that share corners with two equivalent O(2)MgCo3 tetrahedra, corners with three equivalent O(1)MgCo3 trigonal pyramids, and edges with two equivalent O(5)Mg2Co3 square pyramids. In the third O site, O(3) is bonded to one Co(4), two equivalent Co(2), and one Zn(1) atom to form distorted OZnCo3 tetrahedra that share  a cornercorner with one O(5)Mg2Co3 square pyramid, corners with two equivalent O(3)ZnCo3 tetrahedra, and corners with two equivalent O(1)MgCo3 trigonal pyramids. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Co(2) and two equivalent Co(1) atoms. In the fifth O site, O(5) is bonded to two equivalent Mg(1), one Co(4), and two equivalent Co(1) atoms to form distorted OMg2Co3 square pyramids that share  a cornercorner with one O(3)ZnCo3 tetrahedra, edges with two equivalent O(5)Mg2Co3 square pyramids, edges with two equivalent O(2)MgCo3 tetrahedra, and edges with two equivalent O(1)MgCo3 trigonal pyramids. In the sixth O site, O(6) is bonded in a square co-planar geometry to two equivalent Mg(1) and two equivalent Zn(1) atoms. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Co(1), two equivalent Co(4), and two equivalent Zn(1) atoms. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to 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   2.957
_cell_length_b   7.085
_cell_length_c   7.845
_cell_angle_alpha   82.883
_cell_angle_beta   79.760
_cell_angle_gamma   78.162
_symmetry_Int_Tables_number   1
_cell_volume   157.623
_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  0.549  0.056  0.846  1.0
  Zn  Zn1  1  0.384  0.030  0.199  1.0
  Co  Co2  1  0.607  0.251  0.532  1.0
  Co  Co3  1  0.061  0.581  0.239  1.0
  Co  Co4  1  0.827  0.529  0.835  1.0
  Co  Co5  1  0.299  0.851  0.539  1.0
  O  O6  1  0.759  0.769  0.713  1.0
  O  O7  1  0.445  0.381  0.738  1.0
  O  O8  1  0.472  0.729  0.309  1.0
  O  O9  1  0.093  0.384  0.422  1.0
  O  O10  1  0.125  0.104  0.646  1.0
  O  O11  1  0.967  0.049  0.020  1.0
  O  O12  1  0.776  0.053  0.385  1.0
  O  O13  1  0.244  0.542  0.013  1.0
[/CIF]
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The compound described by MgZn(CoO2)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), two equivalent O(5), and two equivalent O(6) atoms to form distorted MgO6 octahedra that share corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Zn(1)O5 trigonal bipyramids, edges with two equivalent Mg(1)O6 octahedra,  an edgeedge with one Zn(1)O5 trigonal bipyramid, and  a faceface with one Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 28°. 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 Mg(1)O6 octahedra, corners with two equivalent Co(2)O4 tetrahedra, corners with two equivalent Zn(1)O5 trigonal bipyramids, edges with two equivalent Co(1)O6 octahedra, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles are 28°. 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(2)O4 tetrahedra, and corners with two equivalent Zn(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 49-53°. In the third Co site, Co(3) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(2), and two equivalent O(8) atoms. In the fourth Co site, Co(4) is bonded in a 6-coordinate geometry to one O(3), one O(5), two equivalent O(1), and two equivalent O(7) atoms. Zn(1) is bonded to one O(3), two equivalent O(6), and two equivalent O(7) atoms to form distorted ZnO5 trigonal bipyramids that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(2)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra, and edges with two equivalent Zn(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 2-58°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one Co(3), and two equivalent Co(4) atoms to form distorted OMgCo3 trigonal pyramids that share corners with two equivalent O(3)ZnCo3 tetrahedra, corners with three equivalent O(2)MgCo3 tetrahedra, corners with two equivalent O(1)MgCo3 trigonal pyramids, and edges with two equivalent O(5)Mg2Co3 square pyramids. In the second O site, O(2) is bonded to one Mg(1), one Co(1), and two equivalent Co(3) atoms to form distorted OMgCo3 tetrahedra that share corners with two equivalent O(2)MgCo3 tetrahedra, corners with three equivalent O(1)MgCo3 trigonal pyramids, and edges with two equivalent O(5)Mg2Co3 square pyramids. In the third O site, O(3) is bonded to one Co(4), two equivalent Co(2), and one Zn(1) atom to form distorted OZnCo3 tetrahedra that share  a cornercorner with one O(5)Mg2Co3 square pyramid, corners with two equivalent O(3)ZnCo3 tetrahedra, and corners with two equivalent O(1)MgCo3 trigonal pyramids. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Co(2) and two equivalent Co(1) atoms. In the fifth O site, O(5) is bonded to two equivalent Mg(1), one Co(4), and two equivalent Co(1) atoms to form distorted OMg2Co3 square pyramids that share  a cornercorner with one O(3)ZnCo3 tetrahedra, edges with two equivalent O(5)Mg2Co3 square pyramids, edges with two equivalent O(2)MgCo3 tetrahedra, and edges with two equivalent O(1)MgCo3 trigonal pyramids. In the sixth O site, O(6) is bonded in a square co-planar geometry to two equivalent Mg(1) and two equivalent Zn(1) atoms. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Co(1), two equivalent Co(4), and two equivalent Zn(1) atoms. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to 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   2.957
_cell_length_b   7.085
_cell_length_c   7.845
_cell_angle_alpha   82.883
_cell_angle_beta   79.760
_cell_angle_gamma   78.162
_symmetry_Int_Tables_number   1
_cell_volume   157.623
_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  0.549  0.056  0.846  1.0
  Zn  Zn1  1  0.384  0.030  0.199  1.0
  Co  Co2  1  0.607  0.251  0.532  1.0
  Co  Co3  1  0.061  0.581  0.239  1.0
  Co  Co4  1  0.827  0.529  0.835  1.0
  Co  Co5  1  0.299  0.851  0.539  1.0
  O  O6  1  0.759  0.769  0.713  1.0
  O  O7  1  0.445  0.381  0.738  1.0
  O  O8  1  0.472  0.729  0.309  1.0
  O  O9  1  0.093  0.384  0.422  1.0
  O  O10  1  0.125  0.104  0.646  1.0
  O  O11  1  0.967  0.049  0.020  1.0
  O  O12  1  0.776  0.053  0.385  1.0
  O  O13  1  0.244  0.542  0.013  1.0
[/CIF]
.