The compound described by K3(CuO2)2 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. In the second K site, K(2) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. In the second Cu site, Cu(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. O(1) is bonded in a 6-coordinate geometry to one K(2), three equivalent K(1), one Cu(1), and one Cu(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K3(CuO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.415
_cell_length_b   5.415
_cell_length_c   10.860
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   111.488
_symmetry_Int_Tables_number   1
_cell_volume   296.338
_cell_formula_units_Z   2
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  0.653  0.347  0.567  1.0
  K  K1  1  0.347  0.653  0.433  1.0
  K  K2  1  0.653  0.347  0.933  1.0
  K  K3  1  0.347  0.653  0.067  1.0
  K  K4  1  0.304  0.696  0.750  1.0
  K  K5  1  0.696  0.304  0.250  1.0
  Cu  Cu6  1  0.000  0.000  0.500  1.0
  Cu  Cu7  1  0.000  0.000  0.000  1.0
  Cu  Cu8  1  0.937  0.063  0.750  1.0
  Cu  Cu9  1  0.063  0.937  0.250  1.0
  O  O10  1  0.859  0.732  0.387  1.0
  O  O11  1  0.732  0.859  0.613  1.0
  O  O12  1  0.859  0.732  0.113  1.0
  O  O13  1  0.732  0.859  0.887  1.0
  O  O14  1  0.141  0.268  0.613  1.0
  O  O15  1  0.268  0.141  0.387  1.0
  O  O16  1  0.141  0.268  0.887  1.0
  O  O17  1  0.268  0.141  0.113  1.0
[/CIF]
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The compound described by K3(CuO2)2 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. In the second K site, K(2) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. In the second Cu site, Cu(2) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. O(1) is bonded in a 6-coordinate geometry to one K(2), three equivalent K(1), one Cu(1), and one Cu(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K3(CuO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.415
_cell_length_b   5.415
_cell_length_c   10.860
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   111.488
_symmetry_Int_Tables_number   1
_cell_volume   296.338
_cell_formula_units_Z   2
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  0.653  0.347  0.567  1.0
  K  K1  1  0.347  0.653  0.433  1.0
  K  K2  1  0.653  0.347  0.933  1.0
  K  K3  1  0.347  0.653  0.067  1.0
  K  K4  1  0.304  0.696  0.750  1.0
  K  K5  1  0.696  0.304  0.250  1.0
  Cu  Cu6  1  0.000  0.000  0.500  1.0
  Cu  Cu7  1  0.000  0.000  0.000  1.0
  Cu  Cu8  1  0.937  0.063  0.750  1.0
  Cu  Cu9  1  0.063  0.937  0.250  1.0
  O  O10  1  0.859  0.732  0.387  1.0
  O  O11  1  0.732  0.859  0.613  1.0
  O  O12  1  0.859  0.732  0.113  1.0
  O  O13  1  0.732  0.859  0.887  1.0
  O  O14  1  0.141  0.268  0.613  1.0
  O  O15  1  0.268  0.141  0.387  1.0
  O  O16  1  0.141  0.268  0.887  1.0
  O  O17  1  0.268  0.141  0.113  1.0
[/CIF]
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