The crystal structure described by K2CoI4 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one I(1), one I(3), and four equivalent I(2) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to one I(1), one I(3), and four equivalent I(2) atoms. Co(1) is bonded in a tetrahedral geometry to one I(1), one I(3), and two equivalent I(2) atoms. There are three inequivalent I sites. In the first I site, I(1) is bonded in a distorted T-shaped geometry to one K(1), one K(2), and one Co(1) atom. In the second I site, I(2) is bonded to two equivalent K(1), two equivalent K(2), and one Co(1) atom to form a mixture of distorted edge, corner, and face-sharing IK4Co square pyramids. In the third I site, I(3) is bonded in a T-shaped geometry to one K(1), one K(2), and one Co(1) atom. is represented by the CIF file [CIF]
data_K2CoI4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.133
_cell_length_b   7.796
_cell_length_c   9.695
_cell_angle_alpha   71.707
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   583.559
_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  0.750  0.783  0.551  1.0
  K  K1  1  0.250  0.217  0.449  1.0
  K  K2  1  0.750  0.735  0.069  1.0
  K  K3  1  0.250  0.265  0.931  1.0
  Co  Co4  1  0.750  0.217  0.702  1.0
  Co  Co5  1  0.250  0.783  0.298  1.0
  I  I6  1  0.750  0.396  0.427  1.0
  I  I7  1  0.250  0.604  0.573  1.0
  I  I8  1  1.000  0.999  0.239  1.0
  I  I9  1  0.000  0.001  0.761  1.0
  I  I10  1  0.500  0.001  0.761  1.0
  I  I11  1  0.500  0.999  0.239  1.0
  I  I12  1  0.750  0.416  0.872  1.0
  I  I13  1  0.250  0.584  0.128  1.0
[/CIF]
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The crystal structure described by K2CoI4 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one I(1), one I(3), and four equivalent I(2) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to one I(1), one I(3), and four equivalent I(2) atoms. Co(1) is bonded in a tetrahedral geometry to one I(1), one I(3), and two equivalent I(2) atoms. There are three inequivalent I sites. In the first I site, I(1) is bonded in a distorted T-shaped geometry to one K(1), one K(2), and one Co(1) atom. In the second I site, I(2) is bonded to two equivalent K(1), two equivalent K(2), and one Co(1) atom to form a mixture of distorted edge, corner, and face-sharing IK4Co square pyramids. In the third I site, I(3) is bonded in a T-shaped geometry to one K(1), one K(2), and one Co(1) atom. is represented by the CIF file [CIF]
data_K2CoI4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.133
_cell_length_b   7.796
_cell_length_c   9.695
_cell_angle_alpha   71.707
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   583.559
_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  0.750  0.783  0.551  1.0
  K  K1  1  0.250  0.217  0.449  1.0
  K  K2  1  0.750  0.735  0.069  1.0
  K  K3  1  0.250  0.265  0.931  1.0
  Co  Co4  1  0.750  0.217  0.702  1.0
  Co  Co5  1  0.250  0.783  0.298  1.0
  I  I6  1  0.750  0.396  0.427  1.0
  I  I7  1  0.250  0.604  0.573  1.0
  I  I8  1  1.000  0.999  0.239  1.0
  I  I9  1  0.000  0.001  0.761  1.0
  I  I10  1  0.500  0.001  0.761  1.0
  I  I11  1  0.500  0.999  0.239  1.0
  I  I12  1  0.750  0.416  0.872  1.0
  I  I13  1  0.250  0.584  0.128  1.0
[/CIF]
.