The material structure described by K2Sb4S7 crystallizes in the monoclinic C2/c space group. K(1) is bonded in a 8-coordinate geometry to one S(4), two equivalent S(2), two equivalent S(3), and three equivalent S(1) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a rectangular see-saw-like geometry to one S(1), one S(2), and two equivalent S(4) atoms. In the second Sb site, Sb(2) is bonded in a 3-coordinate geometry to one S(1), one S(2), one S(3), and one S(4) atom. There are four inequivalent S sites. In the first S site, S(4) is bonded in a distorted rectangular see-saw-like geometry to one K(1), one Sb(2), and two equivalent Sb(1) atoms. In the second S site, S(1) is bonded in a 5-coordinate geometry to three equivalent K(1), one Sb(1), and one Sb(2) atom. In the third S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent K(1), one Sb(1), and one Sb(2) atom. In the fourth S site, S(3) is bonded in a 6-coordinate geometry to four equivalent K(1) and two equivalent Sb(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Sb4S7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.626
_cell_length_b   6.626
_cell_length_c   17.813
_cell_angle_alpha   86.731
_cell_angle_beta   86.731
_cell_angle_gamma   75.156
_symmetry_Int_Tables_number   1
_cell_volume   753.932
_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  0.215  0.449  0.205  1.0
  K  K1  1  0.551  0.785  0.295  1.0
  K  K2  1  0.785  0.551  0.795  1.0
  K  K3  1  0.449  0.215  0.705  1.0
  Sb  Sb4  1  0.637  0.694  0.033  1.0
  Sb  Sb5  1  0.694  0.637  0.533  1.0
  Sb  Sb6  1  0.363  0.306  0.967  1.0
  Sb  Sb7  1  0.306  0.363  0.467  1.0
  Sb  Sb8  1  0.119  0.861  0.619  1.0
  Sb  Sb9  1  0.139  0.881  0.881  1.0
  Sb  Sb10  1  0.881  0.139  0.381  1.0
  Sb  Sb11  1  0.861  0.119  0.119  1.0
  S  S12  1  0.512  0.265  0.344  1.0
  S  S13  1  0.524  0.025  0.127  1.0
  S  S14  1  0.488  0.735  0.656  1.0
  S  S15  1  0.265  0.512  0.844  1.0
  S  S16  1  0.998  0.002  0.750  1.0
  S  S17  1  0.002  0.998  0.250  1.0
  S  S18  1  0.025  0.524  0.627  1.0
  S  S19  1  0.476  0.975  0.873  1.0
  S  S20  1  0.975  0.476  0.373  1.0
  S  S21  1  0.319  0.729  0.461  1.0
  S  S22  1  0.729  0.319  0.961  1.0
  S  S23  1  0.681  0.271  0.539  1.0
  S  S24  1  0.735  0.488  0.156  1.0
  S  S25  1  0.271  0.681  0.039  1.0
[/CIF]
.
The material structure described by K2Sb4S7 crystallizes in the monoclinic C2/c space group. K(1) is bonded in a 8-coordinate geometry to one S(4), two equivalent S(2), two equivalent S(3), and three equivalent S(1) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a rectangular see-saw-like geometry to one S(1), one S(2), and two equivalent S(4) atoms. In the second Sb site, Sb(2) is bonded in a 3-coordinate geometry to one S(1), one S(2), one S(3), and one S(4) atom. There are four inequivalent S sites. In the first S site, S(4) is bonded in a distorted rectangular see-saw-like geometry to one K(1), one Sb(2), and two equivalent Sb(1) atoms. In the second S site, S(1) is bonded in a 5-coordinate geometry to three equivalent K(1), one Sb(1), and one Sb(2) atom. In the third S site, S(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent K(1), one Sb(1), and one Sb(2) atom. In the fourth S site, S(3) is bonded in a 6-coordinate geometry to four equivalent K(1) and two equivalent Sb(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Sb4S7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.626
_cell_length_b   6.626
_cell_length_c   17.813
_cell_angle_alpha   86.731
_cell_angle_beta   86.731
_cell_angle_gamma   75.156
_symmetry_Int_Tables_number   1
_cell_volume   753.932
_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  0.215  0.449  0.205  1.0
  K  K1  1  0.551  0.785  0.295  1.0
  K  K2  1  0.785  0.551  0.795  1.0
  K  K3  1  0.449  0.215  0.705  1.0
  Sb  Sb4  1  0.637  0.694  0.033  1.0
  Sb  Sb5  1  0.694  0.637  0.533  1.0
  Sb  Sb6  1  0.363  0.306  0.967  1.0
  Sb  Sb7  1  0.306  0.363  0.467  1.0
  Sb  Sb8  1  0.119  0.861  0.619  1.0
  Sb  Sb9  1  0.139  0.881  0.881  1.0
  Sb  Sb10  1  0.881  0.139  0.381  1.0
  Sb  Sb11  1  0.861  0.119  0.119  1.0
  S  S12  1  0.512  0.265  0.344  1.0
  S  S13  1  0.524  0.025  0.127  1.0
  S  S14  1  0.488  0.735  0.656  1.0
  S  S15  1  0.265  0.512  0.844  1.0
  S  S16  1  0.998  0.002  0.750  1.0
  S  S17  1  0.002  0.998  0.250  1.0
  S  S18  1  0.025  0.524  0.627  1.0
  S  S19  1  0.476  0.975  0.873  1.0
  S  S20  1  0.975  0.476  0.373  1.0
  S  S21  1  0.319  0.729  0.461  1.0
  S  S22  1  0.729  0.319  0.961  1.0
  S  S23  1  0.681  0.271  0.539  1.0
  S  S24  1  0.735  0.488  0.156  1.0
  S  S25  1  0.271  0.681  0.039  1.0
[/CIF]
.