The crystal structure described by KMnO2 crystallizes in the monoclinic P2_1/m space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to one O(2), one O(5), two equivalent O(3), and two equivalent O(4) atoms. In the third K site, K(3) is bonded in a 6-coordinate geometry to one O(1), one O(6), two equivalent O(2), and two equivalent O(3) atoms. In the fourth K site, K(4) is bonded in a 6-coordinate geometry to one O(1), one O(4), one O(5), one O(6), and two equivalent O(7) atoms. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(3), one O(4), one O(5), and one O(7) atom to form a mixture of edge and corner-sharing MnO5 trigonal bipyramids. In the second Mn site, Mn(2) is bonded to one O(6), two equivalent O(4), and two equivalent O(5) atoms to form a mixture of edge and corner-sharing MnO5 square pyramids. In the third Mn site, Mn(3) is bonded to one O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted edge-sharing MnO5 square pyramids. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(2), one O(6), and two equivalent O(7) atoms to form a mixture of distorted edge and corner-sharing MnO5 square pyramids. There are seven inequivalent O sites. In the first O site, O(6) is bonded in a 6-coordinate geometry to one K(3), two equivalent K(4), one Mn(2), and two equivalent Mn(4) atoms. In the second O site, O(7) is bonded to two equivalent K(4), one Mn(1), and two equivalent Mn(4) atoms to form a mixture of distorted edge and corner-sharing OK2Mn3 trigonal bipyramids. In the third O site, O(1) is bonded in a 6-coordinate geometry to one K(3), two equivalent K(4), one Mn(3), and two equivalent Mn(4) atoms. In the fourth O site, O(2) is bonded to one K(2), one K(3), one Mn(1), one Mn(3), and one Mn(4) atom to form a mixture of distorted edge and corner-sharing OK2Mn3 trigonal bipyramids. In the fifth O site, O(3) is bonded in a 6-coordinate geometry to one K(1), one K(3), two equivalent K(2), one Mn(1), and one Mn(3) atom. In the sixth O site, O(4) is bonded in a 6-coordinate geometry to one K(1), one K(4), two equivalent K(2), one Mn(1), and one Mn(2) atom. In the seventh O site, O(5) is bonded in a 2-coordinate geometry to one K(1), one K(2), one K(4), one Mn(1), and one Mn(2) atom. is represented by the CIF card [CIF]
data_KMnO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.326
_cell_length_b   6.228
_cell_length_c   10.097
_cell_angle_alpha   85.266
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   709.788
_cell_formula_units_Z   12
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  0.829  0.424  1.0
  K  K1  1  0.463  0.810  0.415  1.0
  K  K2  1  0.537  0.190  0.585  1.0
  K  K3  1  0.750  0.075  0.823  1.0
  K  K4  1  0.105  0.066  0.883  1.0
  K  K5  1  0.605  0.934  0.117  1.0
  K  K6  1  0.250  0.925  0.177  1.0
  K  K7  1  0.963  0.190  0.585  1.0
  K  K8  1  0.395  0.066  0.883  1.0
  K  K9  1  0.895  0.934  0.117  1.0
  K  K10  1  0.037  0.810  0.415  1.0
  K  K11  1  0.250  0.171  0.576  1.0
  Mn  Mn12  1  0.501  0.363  0.271  1.0
  Mn  Mn13  1  0.750  0.356  0.281  1.0
  Mn  Mn14  1  0.250  0.380  0.272  1.0
  Mn  Mn15  1  0.875  0.484  0.989  1.0
  Mn  Mn16  1  0.250  0.644  0.719  1.0
  Mn  Mn17  1  0.750  0.620  0.728  1.0
  Mn  Mn18  1  0.001  0.637  0.729  1.0
  Mn  Mn19  1  0.375  0.516  0.011  1.0
  Mn  Mn20  1  0.499  0.637  0.729  1.0
  Mn  Mn21  1  0.625  0.484  0.989  1.0
  Mn  Mn22  1  0.999  0.363  0.271  1.0
  Mn  Mn23  1  0.125  0.516  0.011  1.0
  O  O24  1  0.250  0.315  0.055  1.0
  O  O25  1  0.622  0.424  0.772  1.0
  O  O26  1  0.122  0.576  0.228  1.0
  O  O27  1  0.372  0.192  0.341  1.0
  O  O28  1  0.621  0.162  0.330  1.0
  O  O29  1  0.379  0.838  0.670  1.0
  O  O30  1  0.750  0.685  0.945  1.0
  O  O31  1  0.873  0.566  0.267  1.0
  O  O32  1  0.250  0.705  0.944  1.0
  O  O33  1  0.127  0.434  0.733  1.0
  O  O34  1  0.121  0.838  0.670  1.0
  O  O35  1  0.750  0.295  0.056  1.0
  O  O36  1  0.002  0.308  0.059  1.0
  O  O37  1  0.878  0.424  0.772  1.0
  O  O38  1  0.498  0.308  0.059  1.0
  O  O39  1  0.998  0.692  0.941  1.0
  O  O40  1  0.128  0.192  0.341  1.0
  O  O41  1  0.628  0.808  0.659  1.0
  O  O42  1  0.627  0.566  0.267  1.0
  O  O43  1  0.879  0.162  0.330  1.0
  O  O44  1  0.378  0.576  0.228  1.0
  O  O45  1  0.502  0.692  0.941  1.0
  O  O46  1  0.872  0.808  0.659  1.0
  O  O47  1  0.373  0.434  0.733  1.0
[/CIF]
.
The crystal structure described by KMnO2 crystallizes in the monoclinic P2_1/m space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to one O(2), one O(5), two equivalent O(3), and two equivalent O(4) atoms. In the third K site, K(3) is bonded in a 6-coordinate geometry to one O(1), one O(6), two equivalent O(2), and two equivalent O(3) atoms. In the fourth K site, K(4) is bonded in a 6-coordinate geometry to one O(1), one O(4), one O(5), one O(6), and two equivalent O(7) atoms. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(3), one O(4), one O(5), and one O(7) atom to form a mixture of edge and corner-sharing MnO5 trigonal bipyramids. In the second Mn site, Mn(2) is bonded to one O(6), two equivalent O(4), and two equivalent O(5) atoms to form a mixture of edge and corner-sharing MnO5 square pyramids. In the third Mn site, Mn(3) is bonded to one O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted edge-sharing MnO5 square pyramids. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(2), one O(6), and two equivalent O(7) atoms to form a mixture of distorted edge and corner-sharing MnO5 square pyramids. There are seven inequivalent O sites. In the first O site, O(6) is bonded in a 6-coordinate geometry to one K(3), two equivalent K(4), one Mn(2), and two equivalent Mn(4) atoms. In the second O site, O(7) is bonded to two equivalent K(4), one Mn(1), and two equivalent Mn(4) atoms to form a mixture of distorted edge and corner-sharing OK2Mn3 trigonal bipyramids. In the third O site, O(1) is bonded in a 6-coordinate geometry to one K(3), two equivalent K(4), one Mn(3), and two equivalent Mn(4) atoms. In the fourth O site, O(2) is bonded to one K(2), one K(3), one Mn(1), one Mn(3), and one Mn(4) atom to form a mixture of distorted edge and corner-sharing OK2Mn3 trigonal bipyramids. In the fifth O site, O(3) is bonded in a 6-coordinate geometry to one K(1), one K(3), two equivalent K(2), one Mn(1), and one Mn(3) atom. In the sixth O site, O(4) is bonded in a 6-coordinate geometry to one K(1), one K(4), two equivalent K(2), one Mn(1), and one Mn(2) atom. In the seventh O site, O(5) is bonded in a 2-coordinate geometry to one K(1), one K(2), one K(4), one Mn(1), and one Mn(2) atom. is represented by the CIF card [CIF]
data_KMnO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.326
_cell_length_b   6.228
_cell_length_c   10.097
_cell_angle_alpha   85.266
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   709.788
_cell_formula_units_Z   12
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  0.829  0.424  1.0
  K  K1  1  0.463  0.810  0.415  1.0
  K  K2  1  0.537  0.190  0.585  1.0
  K  K3  1  0.750  0.075  0.823  1.0
  K  K4  1  0.105  0.066  0.883  1.0
  K  K5  1  0.605  0.934  0.117  1.0
  K  K6  1  0.250  0.925  0.177  1.0
  K  K7  1  0.963  0.190  0.585  1.0
  K  K8  1  0.395  0.066  0.883  1.0
  K  K9  1  0.895  0.934  0.117  1.0
  K  K10  1  0.037  0.810  0.415  1.0
  K  K11  1  0.250  0.171  0.576  1.0
  Mn  Mn12  1  0.501  0.363  0.271  1.0
  Mn  Mn13  1  0.750  0.356  0.281  1.0
  Mn  Mn14  1  0.250  0.380  0.272  1.0
  Mn  Mn15  1  0.875  0.484  0.989  1.0
  Mn  Mn16  1  0.250  0.644  0.719  1.0
  Mn  Mn17  1  0.750  0.620  0.728  1.0
  Mn  Mn18  1  0.001  0.637  0.729  1.0
  Mn  Mn19  1  0.375  0.516  0.011  1.0
  Mn  Mn20  1  0.499  0.637  0.729  1.0
  Mn  Mn21  1  0.625  0.484  0.989  1.0
  Mn  Mn22  1  0.999  0.363  0.271  1.0
  Mn  Mn23  1  0.125  0.516  0.011  1.0
  O  O24  1  0.250  0.315  0.055  1.0
  O  O25  1  0.622  0.424  0.772  1.0
  O  O26  1  0.122  0.576  0.228  1.0
  O  O27  1  0.372  0.192  0.341  1.0
  O  O28  1  0.621  0.162  0.330  1.0
  O  O29  1  0.379  0.838  0.670  1.0
  O  O30  1  0.750  0.685  0.945  1.0
  O  O31  1  0.873  0.566  0.267  1.0
  O  O32  1  0.250  0.705  0.944  1.0
  O  O33  1  0.127  0.434  0.733  1.0
  O  O34  1  0.121  0.838  0.670  1.0
  O  O35  1  0.750  0.295  0.056  1.0
  O  O36  1  0.002  0.308  0.059  1.0
  O  O37  1  0.878  0.424  0.772  1.0
  O  O38  1  0.498  0.308  0.059  1.0
  O  O39  1  0.998  0.692  0.941  1.0
  O  O40  1  0.128  0.192  0.341  1.0
  O  O41  1  0.628  0.808  0.659  1.0
  O  O42  1  0.627  0.566  0.267  1.0
  O  O43  1  0.879  0.162  0.330  1.0
  O  O44  1  0.378  0.576  0.228  1.0
  O  O45  1  0.502  0.692  0.941  1.0
  O  O46  1  0.872  0.808  0.659  1.0
  O  O47  1  0.373  0.434  0.733  1.0
[/CIF]
.