The material structure described by K2Mn(PSe3)2 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 7-coordinate geometry to two equivalent Se(1), two equivalent Se(2), and three equivalent Se(3) atoms. Mn(1) is bonded in a distorted octahedral geometry to two equivalent Se(1), two equivalent Se(2), and two equivalent Se(3) atoms. P(1) is bonded in a 3-coordinate geometry to one Se(1), one Se(2), and one Se(3) atom. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a 4-coordinate geometry to two equivalent K(1), one Mn(1), and one P(1) atom. In the second Se site, Se(2) is bonded in a distorted see-saw-like geometry to two equivalent K(1), one Mn(1), and one P(1) atom. In the third Se site, Se(3) is bonded to three equivalent K(1), one Mn(1), and one P(1) atom to form a mixture of distorted edge and corner-sharing SeK3MnP square pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Mn(PSe3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.889
_cell_length_b   6.561
_cell_length_c   8.981
_cell_angle_alpha   57.074
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   637.445
_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  0.694  0.185  0.541  1.0
  K  K1  1  0.194  0.815  0.959  1.0
  K  K2  1  0.306  0.815  0.459  1.0
  K  K3  1  0.806  0.185  0.041  1.0
  Mn  Mn4  1  0.000  0.500  0.500  1.0
  Mn  Mn5  1  0.500  0.500  0.000  1.0
  P  P6  1  0.033  0.148  0.367  1.0
  P  P7  1  0.533  0.852  0.133  1.0
  P  P8  1  0.967  0.852  0.633  1.0
  P  P9  1  0.467  0.148  0.867  1.0
  Se  Se10  1  0.171  0.288  0.430  1.0
  Se  Se11  1  0.671  0.712  0.070  1.0
  Se  Se12  1  0.829  0.712  0.570  1.0
  Se  Se13  1  0.329  0.288  0.930  1.0
  Se  Se14  1  0.916  0.440  0.246  1.0
  Se  Se15  1  0.416  0.560  0.254  1.0
  Se  Se16  1  0.084  0.560  0.754  1.0
  Se  Se17  1  0.584  0.440  0.746  1.0
  Se  Se18  1  0.057  0.953  0.232  1.0
  Se  Se19  1  0.557  0.047  0.268  1.0
  Se  Se20  1  0.943  0.047  0.768  1.0
  Se  Se21  1  0.443  0.953  0.732  1.0
[/CIF]
.
The material structure described by K2Mn(PSe3)2 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 7-coordinate geometry to two equivalent Se(1), two equivalent Se(2), and three equivalent Se(3) atoms. Mn(1) is bonded in a distorted octahedral geometry to two equivalent Se(1), two equivalent Se(2), and two equivalent Se(3) atoms. P(1) is bonded in a 3-coordinate geometry to one Se(1), one Se(2), and one Se(3) atom. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a 4-coordinate geometry to two equivalent K(1), one Mn(1), and one P(1) atom. In the second Se site, Se(2) is bonded in a distorted see-saw-like geometry to two equivalent K(1), one Mn(1), and one P(1) atom. In the third Se site, Se(3) is bonded to three equivalent K(1), one Mn(1), and one P(1) atom to form a mixture of distorted edge and corner-sharing SeK3MnP square pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Mn(PSe3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.889
_cell_length_b   6.561
_cell_length_c   8.981
_cell_angle_alpha   57.074
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   637.445
_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  0.694  0.185  0.541  1.0
  K  K1  1  0.194  0.815  0.959  1.0
  K  K2  1  0.306  0.815  0.459  1.0
  K  K3  1  0.806  0.185  0.041  1.0
  Mn  Mn4  1  0.000  0.500  0.500  1.0
  Mn  Mn5  1  0.500  0.500  0.000  1.0
  P  P6  1  0.033  0.148  0.367  1.0
  P  P7  1  0.533  0.852  0.133  1.0
  P  P8  1  0.967  0.852  0.633  1.0
  P  P9  1  0.467  0.148  0.867  1.0
  Se  Se10  1  0.171  0.288  0.430  1.0
  Se  Se11  1  0.671  0.712  0.070  1.0
  Se  Se12  1  0.829  0.712  0.570  1.0
  Se  Se13  1  0.329  0.288  0.930  1.0
  Se  Se14  1  0.916  0.440  0.246  1.0
  Se  Se15  1  0.416  0.560  0.254  1.0
  Se  Se16  1  0.084  0.560  0.754  1.0
  Se  Se17  1  0.584  0.440  0.746  1.0
  Se  Se18  1  0.057  0.953  0.232  1.0
  Se  Se19  1  0.557  0.047  0.268  1.0
  Se  Se20  1  0.943  0.047  0.768  1.0
  Se  Se21  1  0.443  0.953  0.732  1.0
[/CIF]
.