The structure described by K2CoCl4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to one Cl(1), two equivalent Cl(2), two equivalent Cl(3), and two equivalent Cl(4) atoms to form KCl7 pentagonal bipyramids that share corners with two equivalent K(1)Cl7 pentagonal bipyramids, corners with five equivalent Co(1)Cl4 tetrahedra, edges with two equivalent K(1)Cl7 pentagonal bipyramids, and  an edgeedge with one Co(1)Cl4 tetrahedra. In the second K site, K(2) is bonded in a 7-coordinate geometry to one Cl(4), two equivalent Cl(1), two equivalent Cl(2), and two equivalent Cl(3) atoms. Co(1) is bonded to one Cl(1), one Cl(2), one Cl(3), and one Cl(4) atom to form CoCl4 tetrahedra that share corners with five equivalent K(1)Cl7 pentagonal bipyramids and  an edgeedge with one K(1)Cl7 pentagonal bipyramid. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to one K(1), two equivalent K(2), and one Co(1) atom to form distorted edge-sharing ClK3Co trigonal pyramids. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to two equivalent K(1), two equivalent K(2), and one Co(1) atom. In the third Cl site, Cl(3) is bonded in a 5-coordinate geometry to two equivalent K(1), two equivalent K(2), and one Co(1) atom. In the fourth Cl site, Cl(4) is bonded in a distorted rectangular see-saw-like geometry to one K(2), two equivalent K(1), and one Co(1) atom. is represented by the CIF card [CIF]
data_K2CoCl4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.558
_cell_length_b   6.776
_cell_length_c   12.674
_cell_angle_alpha   73.316
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   786.297
_cell_formula_units_Z   4
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  0.355  0.777  0.992  1.0
  K  K1  1  0.645  0.223  0.008  1.0
  K  K2  1  0.405  0.408  0.333  1.0
  K  K3  1  0.905  0.592  0.167  1.0
  K  K4  1  0.855  0.223  0.508  1.0
  K  K5  1  0.095  0.408  0.833  1.0
  K  K6  1  0.595  0.592  0.667  1.0
  K  K7  1  0.145  0.777  0.492  1.0
  Co  Co8  1  0.147  0.119  0.180  1.0
  Co  Co9  1  0.853  0.881  0.820  1.0
  Co  Co10  1  0.353  0.119  0.680  1.0
  Co  Co11  1  0.647  0.881  0.320  1.0
  Cl  Cl12  1  0.038  0.792  0.933  1.0
  Cl  Cl13  1  0.962  0.208  0.067  1.0
  Cl  Cl14  1  0.100  0.216  0.334  1.0
  Cl  Cl15  1  0.311  0.779  0.721  1.0
  Cl  Cl16  1  0.189  0.779  0.221  1.0
  Cl  Cl17  1  0.839  0.699  0.399  1.0
  Cl  Cl18  1  0.339  0.301  0.101  1.0
  Cl  Cl19  1  0.811  0.221  0.779  1.0
  Cl  Cl20  1  0.900  0.784  0.666  1.0
  Cl  Cl21  1  0.161  0.301  0.601  1.0
  Cl  Cl22  1  0.661  0.699  0.899  1.0
  Cl  Cl23  1  0.689  0.221  0.279  1.0
  Cl  Cl24  1  0.400  0.216  0.834  1.0
  Cl  Cl25  1  0.538  0.208  0.567  1.0
  Cl  Cl26  1  0.600  0.784  0.166  1.0
  Cl  Cl27  1  0.462  0.792  0.433  1.0
[/CIF]
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The structure described by K2CoCl4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to one Cl(1), two equivalent Cl(2), two equivalent Cl(3), and two equivalent Cl(4) atoms to form KCl7 pentagonal bipyramids that share corners with two equivalent K(1)Cl7 pentagonal bipyramids, corners with five equivalent Co(1)Cl4 tetrahedra, edges with two equivalent K(1)Cl7 pentagonal bipyramids, and  an edgeedge with one Co(1)Cl4 tetrahedra. In the second K site, K(2) is bonded in a 7-coordinate geometry to one Cl(4), two equivalent Cl(1), two equivalent Cl(2), and two equivalent Cl(3) atoms. Co(1) is bonded to one Cl(1), one Cl(2), one Cl(3), and one Cl(4) atom to form CoCl4 tetrahedra that share corners with five equivalent K(1)Cl7 pentagonal bipyramids and  an edgeedge with one K(1)Cl7 pentagonal bipyramid. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to one K(1), two equivalent K(2), and one Co(1) atom to form distorted edge-sharing ClK3Co trigonal pyramids. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to two equivalent K(1), two equivalent K(2), and one Co(1) atom. In the third Cl site, Cl(3) is bonded in a 5-coordinate geometry to two equivalent K(1), two equivalent K(2), and one Co(1) atom. In the fourth Cl site, Cl(4) is bonded in a distorted rectangular see-saw-like geometry to one K(2), two equivalent K(1), and one Co(1) atom. is represented by the CIF card [CIF]
data_K2CoCl4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.558
_cell_length_b   6.776
_cell_length_c   12.674
_cell_angle_alpha   73.316
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   786.297
_cell_formula_units_Z   4
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  0.355  0.777  0.992  1.0
  K  K1  1  0.645  0.223  0.008  1.0
  K  K2  1  0.405  0.408  0.333  1.0
  K  K3  1  0.905  0.592  0.167  1.0
  K  K4  1  0.855  0.223  0.508  1.0
  K  K5  1  0.095  0.408  0.833  1.0
  K  K6  1  0.595  0.592  0.667  1.0
  K  K7  1  0.145  0.777  0.492  1.0
  Co  Co8  1  0.147  0.119  0.180  1.0
  Co  Co9  1  0.853  0.881  0.820  1.0
  Co  Co10  1  0.353  0.119  0.680  1.0
  Co  Co11  1  0.647  0.881  0.320  1.0
  Cl  Cl12  1  0.038  0.792  0.933  1.0
  Cl  Cl13  1  0.962  0.208  0.067  1.0
  Cl  Cl14  1  0.100  0.216  0.334  1.0
  Cl  Cl15  1  0.311  0.779  0.721  1.0
  Cl  Cl16  1  0.189  0.779  0.221  1.0
  Cl  Cl17  1  0.839  0.699  0.399  1.0
  Cl  Cl18  1  0.339  0.301  0.101  1.0
  Cl  Cl19  1  0.811  0.221  0.779  1.0
  Cl  Cl20  1  0.900  0.784  0.666  1.0
  Cl  Cl21  1  0.161  0.301  0.601  1.0
  Cl  Cl22  1  0.661  0.699  0.899  1.0
  Cl  Cl23  1  0.689  0.221  0.279  1.0
  Cl  Cl24  1  0.400  0.216  0.834  1.0
  Cl  Cl25  1  0.538  0.208  0.567  1.0
  Cl  Cl26  1  0.600  0.784  0.166  1.0
  Cl  Cl27  1  0.462  0.792  0.433  1.0
[/CIF]
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