The material structure described by K2Ag2GeSe4 crystallizes in the orthorhombic Fddd space group. K(1) is bonded in a 6-coordinate geometry to six equivalent Se(1) atoms. Ag(1) is bonded in a 2-coordinate geometry to four equivalent Se(1) atoms. Ge(1) is bonded in a tetrahedral geometry to four equivalent Se(1) atoms. Se(1) is bonded in a 6-coordinate geometry to three equivalent K(1), two equivalent Ag(1), and one Ge(1) atom. is represented by the CIF card [CIF]
data_K2Ag2GeSe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.152
_cell_length_b   11.577
_cell_length_c   7.841
_cell_angle_alpha   82.868
_cell_angle_beta   60.860
_cell_angle_gamma   36.272
_symmetry_Int_Tables_number   1
_cell_volume   527.137
_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  0.314  0.314  0.686  1.0
  K  K1  1  0.686  0.686  0.314  1.0
  K  K2  1  0.936  0.936  0.564  1.0
  K  K3  1  0.564  0.564  0.936  1.0
  Ag  Ag4  1  0.925  0.925  0.075  1.0
  Ag  Ag5  1  0.075  0.075  0.925  1.0
  Ag  Ag6  1  0.325  0.325  0.175  1.0
  Ag  Ag7  1  0.175  0.175  0.325  1.0
  Ge  Ge8  1  0.500  0.500  0.500  1.0
  Ge  Ge9  1  0.750  0.750  0.750  1.0
  Se  Se10  1  0.530  0.347  0.259  1.0
  Se  Se11  1  0.864  0.259  0.347  1.0
  Se  Se12  1  0.259  0.864  0.530  1.0
  Se  Se13  1  0.347  0.530  0.864  1.0
  Se  Se14  1  0.720  0.903  0.991  1.0
  Se  Se15  1  0.386  0.991  0.903  1.0
  Se  Se16  1  0.991  0.386  0.720  1.0
  Se  Se17  1  0.903  0.720  0.386  1.0
[/CIF]
.
The material structure described by K2Ag2GeSe4 crystallizes in the orthorhombic Fddd space group. K(1) is bonded in a 6-coordinate geometry to six equivalent Se(1) atoms. Ag(1) is bonded in a 2-coordinate geometry to four equivalent Se(1) atoms. Ge(1) is bonded in a tetrahedral geometry to four equivalent Se(1) atoms. Se(1) is bonded in a 6-coordinate geometry to three equivalent K(1), two equivalent Ag(1), and one Ge(1) atom. is represented by the CIF card [CIF]
data_K2Ag2GeSe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.152
_cell_length_b   11.577
_cell_length_c   7.841
_cell_angle_alpha   82.868
_cell_angle_beta   60.860
_cell_angle_gamma   36.272
_symmetry_Int_Tables_number   1
_cell_volume   527.137
_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  0.314  0.314  0.686  1.0
  K  K1  1  0.686  0.686  0.314  1.0
  K  K2  1  0.936  0.936  0.564  1.0
  K  K3  1  0.564  0.564  0.936  1.0
  Ag  Ag4  1  0.925  0.925  0.075  1.0
  Ag  Ag5  1  0.075  0.075  0.925  1.0
  Ag  Ag6  1  0.325  0.325  0.175  1.0
  Ag  Ag7  1  0.175  0.175  0.325  1.0
  Ge  Ge8  1  0.500  0.500  0.500  1.0
  Ge  Ge9  1  0.750  0.750  0.750  1.0
  Se  Se10  1  0.530  0.347  0.259  1.0
  Se  Se11  1  0.864  0.259  0.347  1.0
  Se  Se12  1  0.259  0.864  0.530  1.0
  Se  Se13  1  0.347  0.530  0.864  1.0
  Se  Se14  1  0.720  0.903  0.991  1.0
  Se  Se15  1  0.386  0.991  0.903  1.0
  Se  Se16  1  0.991  0.386  0.720  1.0
  Se  Se17  1  0.903  0.720  0.386  1.0
[/CIF]
.