The material described by K2Mg(CoO2)2 crystallizes in the monoclinic C2/m space group. K(1) is bonded in a 3-coordinate geometry to three equivalent O(1) atoms. Mg(1) is bonded in a square co-planar geometry to four equivalent O(2) atoms. Co(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing CoO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent K(1) and two equivalent Co(1) atoms to form a mixture of distorted corner and edge-sharing OK3Co2 trigonal bipyramids. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Mg(1) and two equivalent Co(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Mg(CoO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.844
_cell_length_b   6.844
_cell_length_c   7.174
_cell_angle_alpha   70.108
_cell_angle_beta   109.892
_cell_angle_gamma   154.265
_symmetry_Int_Tables_number   1
_cell_volume   136.730
_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
  K  K0  1  0.244  0.756  0.768  1.0
  K  K1  1  0.756  0.244  0.232  1.0
  Mg  Mg2  1  0.000  0.000  0.500  1.0
  Co  Co3  1  0.037  0.963  0.177  1.0
  Co  Co4  1  0.963  0.037  0.823  1.0
  O  O5  1  0.110  0.890  0.990  1.0
  O  O6  1  0.424  0.576  0.598  1.0
  O  O7  1  0.576  0.424  0.402  1.0
  O  O8  1  0.890  0.110  0.010  1.0
[/CIF]
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The material described by K2Mg(CoO2)2 crystallizes in the monoclinic C2/m space group. K(1) is bonded in a 3-coordinate geometry to three equivalent O(1) atoms. Mg(1) is bonded in a square co-planar geometry to four equivalent O(2) atoms. Co(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing CoO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent K(1) and two equivalent Co(1) atoms to form a mixture of distorted corner and edge-sharing OK3Co2 trigonal bipyramids. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Mg(1) and two equivalent Co(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Mg(CoO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.844
_cell_length_b   6.844
_cell_length_c   7.174
_cell_angle_alpha   70.108
_cell_angle_beta   109.892
_cell_angle_gamma   154.265
_symmetry_Int_Tables_number   1
_cell_volume   136.730
_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
  K  K0  1  0.244  0.756  0.768  1.0
  K  K1  1  0.756  0.244  0.232  1.0
  Mg  Mg2  1  0.000  0.000  0.500  1.0
  Co  Co3  1  0.037  0.963  0.177  1.0
  Co  Co4  1  0.963  0.037  0.823  1.0
  O  O5  1  0.110  0.890  0.990  1.0
  O  O6  1  0.424  0.576  0.598  1.0
  O  O7  1  0.576  0.424  0.402  1.0
  O  O8  1  0.890  0.110  0.010  1.0
[/CIF]
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