The structure described by K2MnO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 10-coordinate geometry to one O(1), three equivalent O(2), and six equivalent O(3) atoms. In the second K site, K(2) is bonded in a 9-coordinate geometry to two equivalent O(2), three equivalent O(1), and four equivalent O(3) atoms. Mn(1) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(1), three equivalent K(2), and one Mn(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent K(2), three equivalent K(1), and one Mn(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent K(2), three equivalent K(1), and one Mn(1) atom. is represented by the CIF card [CIF]
data_K2MnO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.816
_cell_length_b   7.620
_cell_length_c   10.300
_cell_angle_alpha   89.998
_cell_angle_beta   90.002
_cell_angle_gamma   90.003
_symmetry_Int_Tables_number   1
_cell_volume   456.431
_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  0.750  0.838  0.914  1.0
  K  K1  1  0.250  0.162  0.086  1.0
  K  K2  1  0.750  0.338  0.586  1.0
  K  K3  1  0.250  0.662  0.414  1.0
  K  K4  1  0.750  0.013  0.304  1.0
  K  K5  1  0.250  0.987  0.696  1.0
  K  K6  1  0.750  0.513  0.196  1.0
  K  K7  1  0.250  0.487  0.804  1.0
  Mn  Mn8  1  0.750  0.771  0.580  1.0
  Mn  Mn9  1  0.250  0.229  0.420  1.0
  Mn  Mn10  1  0.750  0.271  0.920  1.0
  Mn  Mn11  1  0.250  0.729  0.080  1.0
  O  O12  1  0.750  0.986  0.581  1.0
  O  O13  1  0.250  0.014  0.419  1.0
  O  O14  1  0.750  0.486  0.919  1.0
  O  O15  1  0.250  0.514  0.081  1.0
  O  O16  1  0.750  0.700  0.428  1.0
  O  O17  1  0.250  0.300  0.572  1.0
  O  O18  1  0.750  0.200  0.072  1.0
  O  O19  1  0.250  0.800  0.928  1.0
  O  O20  1  0.979  0.693  0.654  1.0
  O  O21  1  0.479  0.307  0.346  1.0
  O  O22  1  0.521  0.193  0.846  1.0
  O  O23  1  0.021  0.807  0.154  1.0
  O  O24  1  0.021  0.307  0.346  1.0
  O  O25  1  0.521  0.693  0.654  1.0
  O  O26  1  0.479  0.807  0.154  1.0
  O  O27  1  0.979  0.193  0.846  1.0
[/CIF]
.
The structure described by K2MnO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 10-coordinate geometry to one O(1), three equivalent O(2), and six equivalent O(3) atoms. In the second K site, K(2) is bonded in a 9-coordinate geometry to two equivalent O(2), three equivalent O(1), and four equivalent O(3) atoms. Mn(1) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one K(1), three equivalent K(2), and one Mn(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent K(2), three equivalent K(1), and one Mn(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent K(2), three equivalent K(1), and one Mn(1) atom. is represented by the CIF card [CIF]
data_K2MnO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.816
_cell_length_b   7.620
_cell_length_c   10.300
_cell_angle_alpha   89.998
_cell_angle_beta   90.002
_cell_angle_gamma   90.003
_symmetry_Int_Tables_number   1
_cell_volume   456.431
_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  0.750  0.838  0.914  1.0
  K  K1  1  0.250  0.162  0.086  1.0
  K  K2  1  0.750  0.338  0.586  1.0
  K  K3  1  0.250  0.662  0.414  1.0
  K  K4  1  0.750  0.013  0.304  1.0
  K  K5  1  0.250  0.987  0.696  1.0
  K  K6  1  0.750  0.513  0.196  1.0
  K  K7  1  0.250  0.487  0.804  1.0
  Mn  Mn8  1  0.750  0.771  0.580  1.0
  Mn  Mn9  1  0.250  0.229  0.420  1.0
  Mn  Mn10  1  0.750  0.271  0.920  1.0
  Mn  Mn11  1  0.250  0.729  0.080  1.0
  O  O12  1  0.750  0.986  0.581  1.0
  O  O13  1  0.250  0.014  0.419  1.0
  O  O14  1  0.750  0.486  0.919  1.0
  O  O15  1  0.250  0.514  0.081  1.0
  O  O16  1  0.750  0.700  0.428  1.0
  O  O17  1  0.250  0.300  0.572  1.0
  O  O18  1  0.750  0.200  0.072  1.0
  O  O19  1  0.250  0.800  0.928  1.0
  O  O20  1  0.979  0.693  0.654  1.0
  O  O21  1  0.479  0.307  0.346  1.0
  O  O22  1  0.521  0.193  0.846  1.0
  O  O23  1  0.021  0.807  0.154  1.0
  O  O24  1  0.021  0.307  0.346  1.0
  O  O25  1  0.521  0.693  0.654  1.0
  O  O26  1  0.479  0.807  0.154  1.0
  O  O27  1  0.979  0.193  0.846  1.0
[/CIF]
.