The compound described by KNaSe crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 5-coordinate geometry to five equivalent Se(1) atoms. Na(1) is bonded to four equivalent Se(1) atoms to form a mixture of distorted corner and edge-sharing NaSe4 tetrahedra. Se(1) is bonded in a 9-coordinate geometry to five equivalent K(1) and four equivalent Na(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_KNaSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.799
_cell_length_b   8.074
_cell_length_c   8.640
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   334.729
_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  0.513  0.314  1.0
  K  K1  1  0.750  0.013  0.186  1.0
  K  K2  1  0.250  0.487  0.686  1.0
  K  K3  1  0.250  0.987  0.814  1.0
  Na  Na4  1  0.750  0.146  0.576  1.0
  Na  Na5  1  0.250  0.854  0.424  1.0
  Na  Na6  1  0.250  0.354  0.076  1.0
  Na  Na7  1  0.750  0.646  0.924  1.0
  Se  Se8  1  0.750  0.780  0.605  1.0
  Se  Se9  1  0.250  0.220  0.395  1.0
  Se  Se10  1  0.750  0.280  0.895  1.0
  Se  Se11  1  0.250  0.720  0.105  1.0
[/CIF]
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The compound described by KNaSe crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 5-coordinate geometry to five equivalent Se(1) atoms. Na(1) is bonded to four equivalent Se(1) atoms to form a mixture of distorted corner and edge-sharing NaSe4 tetrahedra. Se(1) is bonded in a 9-coordinate geometry to five equivalent K(1) and four equivalent Na(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_KNaSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.799
_cell_length_b   8.074
_cell_length_c   8.640
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   334.729
_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  0.513  0.314  1.0
  K  K1  1  0.750  0.013  0.186  1.0
  K  K2  1  0.250  0.487  0.686  1.0
  K  K3  1  0.250  0.987  0.814  1.0
  Na  Na4  1  0.750  0.146  0.576  1.0
  Na  Na5  1  0.250  0.854  0.424  1.0
  Na  Na6  1  0.250  0.354  0.076  1.0
  Na  Na7  1  0.750  0.646  0.924  1.0
  Se  Se8  1  0.750  0.780  0.605  1.0
  Se  Se9  1  0.250  0.220  0.395  1.0
  Se  Se10  1  0.750  0.280  0.895  1.0
  Se  Se11  1  0.250  0.720  0.105  1.0
[/CIF]
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