The material structure described by K4Sn(SO)4 crystallizes in the triclinic P-1 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded to one S(3), two equivalent S(2), two equivalent S(4), and one O(4) atom to form distorted KS5O octahedra that share  a cornercorner with one K(4)S3O5 hexagonal bipyramid, corners with three equivalent Sn(1)S4 tetrahedra, corners with three equivalent K(2)S3O2 trigonal bipyramids, edges with two equivalent K(1)S5O octahedra,  an edgeedge with one Sn(1)S4 tetrahedra, edges with two equivalent K(2)S3O2 trigonal bipyramids, and  a faceface with one K(4)S3O5 hexagonal bipyramid. In the second K site, K(2) is bonded to one S(4), two equivalent S(2), one O(2), and one O(4) atom to form distorted KS3O2 trigonal bipyramids that share  a cornercorner with one K(4)S3O5 hexagonal bipyramid, corners with three equivalent K(1)S5O octahedra, corners with three equivalent Sn(1)S4 tetrahedra,  an edgeedge with one K(4)S3O5 hexagonal bipyramid, edges with two equivalent K(1)S5O octahedra, and  an edgeedge with one K(2)S3O2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 17-89°. In the third K site, K(3) is bonded in a 6-coordinate geometry to one S(2), one S(4), one O(1), one O(4), and two equivalent O(3) atoms. In the fourth K site, K(4) is bonded to one S(1), one S(3), one S(4), one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form distorted KS3O5 hexagonal bipyramids that share  a cornercorner with one K(1)S5O octahedra,  a cornercorner with one O(3)K3S tetrahedra, corners with three equivalent Sn(1)S4 tetrahedra,  a cornercorner with one K(2)S3O2 trigonal bipyramid,  an edgeedge with one K(4)S3O5 hexagonal bipyramid,  an edgeedge with one K(2)S3O2 trigonal bipyramid, and  a faceface with one K(1)S5O octahedra. The corner-sharing octahedral tilt angles are 5°. Sn(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form SnS4 tetrahedra that share corners with three equivalent K(4)S3O5 hexagonal bipyramids, corners with three equivalent K(1)S5O octahedra,  a cornercorner with one O(3)K3S tetrahedra, corners with three equivalent K(2)S3O2 trigonal bipyramids, and  an edgeedge with one K(1)S5O octahedra. The corner-sharing octahedral tilt angles range from 7-87°. There are four inequivalent S sites. In the first S site, S(1) is bonded in a distorted single-bond geometry to one K(4), one Sn(1), and one O(3) atom. In the second S site, S(2) is bonded to one K(3), two equivalent K(1), two equivalent K(2), and one Sn(1) atom to form distorted SK5Sn octahedra that share corners with two equivalent S(4)K5Sn octahedra, corners with two equivalent O(3)K3S tetrahedra, edges with two equivalent S(2)K5Sn octahedra, and edges with three equivalent S(4)K5Sn octahedra. The corner-sharing octahedral tilt angles range from 13-30°. In the third S site, S(3) is bonded in a distorted single-bond geometry to one K(1), one K(4), one Sn(1), and one O(4) atom. In the fourth S site, S(4) is bonded to one K(2), one K(3), one K(4), two equivalent K(1), and one Sn(1) atom to form SK5Sn octahedra that share corners with two equivalent S(2)K5Sn octahedra, corners with three equivalent O(3)K3S tetrahedra,  an edgeedge with one S(4)K5Sn octahedra, and edges with three equivalent S(2)K5Sn octahedra. The corner-sharing octahedral tilt angles range from 13-30°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted square co-planar geometry to one K(3), two equivalent K(4), and one O(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(2), one K(4), and one O(1) atom. In the third O site, O(3) is bonded to one K(4), two equivalent K(3), and one S(1) atom to form distorted OK3S tetrahedra that share  a cornercorner with one K(4)S3O5 hexagonal bipyramid, corners with two equivalent S(2)K5Sn octahedra, corners with three equivalent S(4)K5Sn octahedra,  a cornercorner with one Sn(1)S4 tetrahedra, and  an edgeedge with one O(3)K3S tetrahedra. The corner-sharing octahedral tilt angles range from 1-92°. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one K(1), one K(2), one K(3), one K(4), and one S(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K4Sn(SO)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.773
_cell_length_b   8.046
_cell_length_c   11.872
_cell_angle_alpha   93.639
_cell_angle_beta   91.003
_cell_angle_gamma   110.566
_symmetry_Int_Tables_number   1
_cell_volume   693.197
_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  0.203  0.835  0.472  1.0
  K  K1  1  0.797  0.165  0.528  1.0
  K  K2  1  0.597  0.619  0.350  1.0
  K  K3  1  0.403  0.381  0.650  1.0
  K  K4  1  0.422  0.995  0.833  1.0
  K  K5  1  0.578  0.005  0.167  1.0
  K  K6  1  0.044  0.721  0.105  1.0
  K  K7  1  0.956  0.279  0.895  1.0
  Sn  Sn8  1  0.813  0.786  0.717  1.0
  Sn  Sn9  1  0.187  0.214  0.283  1.0
  S  S10  1  0.745  0.790  0.924  1.0
  S  S11  1  0.255  0.210  0.076  1.0
  S  S12  1  0.550  0.785  0.607  1.0
  S  S13  1  0.450  0.215  0.393  1.0
  S  S14  1  0.887  0.505  0.701  1.0
  S  S15  1  0.113  0.495  0.299  1.0
  S  S16  1  0.080  0.037  0.688  1.0
  S  S17  1  0.920  0.963  0.312  1.0
  O  O18  1  0.271  0.643  0.928  1.0
  O  O19  1  0.729  0.357  0.072  1.0
  O  O20  1  0.634  0.444  0.120  1.0
  O  O21  1  0.366  0.556  0.880  1.0
  O  O22  1  0.298  0.036  0.043  1.0
  O  O23  1  0.702  0.964  0.957  1.0
  O  O24  1  0.290  0.670  0.278  1.0
  O  O25  1  0.710  0.330  0.722  1.0
[/CIF]
.
The material structure described by K4Sn(SO)4 crystallizes in the triclinic P-1 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded to one S(3), two equivalent S(2), two equivalent S(4), and one O(4) atom to form distorted KS5O octahedra that share  a cornercorner with one K(4)S3O5 hexagonal bipyramid, corners with three equivalent Sn(1)S4 tetrahedra, corners with three equivalent K(2)S3O2 trigonal bipyramids, edges with two equivalent K(1)S5O octahedra,  an edgeedge with one Sn(1)S4 tetrahedra, edges with two equivalent K(2)S3O2 trigonal bipyramids, and  a faceface with one K(4)S3O5 hexagonal bipyramid. In the second K site, K(2) is bonded to one S(4), two equivalent S(2), one O(2), and one O(4) atom to form distorted KS3O2 trigonal bipyramids that share  a cornercorner with one K(4)S3O5 hexagonal bipyramid, corners with three equivalent K(1)S5O octahedra, corners with three equivalent Sn(1)S4 tetrahedra,  an edgeedge with one K(4)S3O5 hexagonal bipyramid, edges with two equivalent K(1)S5O octahedra, and  an edgeedge with one K(2)S3O2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 17-89°. In the third K site, K(3) is bonded in a 6-coordinate geometry to one S(2), one S(4), one O(1), one O(4), and two equivalent O(3) atoms. In the fourth K site, K(4) is bonded to one S(1), one S(3), one S(4), one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form distorted KS3O5 hexagonal bipyramids that share  a cornercorner with one K(1)S5O octahedra,  a cornercorner with one O(3)K3S tetrahedra, corners with three equivalent Sn(1)S4 tetrahedra,  a cornercorner with one K(2)S3O2 trigonal bipyramid,  an edgeedge with one K(4)S3O5 hexagonal bipyramid,  an edgeedge with one K(2)S3O2 trigonal bipyramid, and  a faceface with one K(1)S5O octahedra. The corner-sharing octahedral tilt angles are 5°. Sn(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form SnS4 tetrahedra that share corners with three equivalent K(4)S3O5 hexagonal bipyramids, corners with three equivalent K(1)S5O octahedra,  a cornercorner with one O(3)K3S tetrahedra, corners with three equivalent K(2)S3O2 trigonal bipyramids, and  an edgeedge with one K(1)S5O octahedra. The corner-sharing octahedral tilt angles range from 7-87°. There are four inequivalent S sites. In the first S site, S(1) is bonded in a distorted single-bond geometry to one K(4), one Sn(1), and one O(3) atom. In the second S site, S(2) is bonded to one K(3), two equivalent K(1), two equivalent K(2), and one Sn(1) atom to form distorted SK5Sn octahedra that share corners with two equivalent S(4)K5Sn octahedra, corners with two equivalent O(3)K3S tetrahedra, edges with two equivalent S(2)K5Sn octahedra, and edges with three equivalent S(4)K5Sn octahedra. The corner-sharing octahedral tilt angles range from 13-30°. In the third S site, S(3) is bonded in a distorted single-bond geometry to one K(1), one K(4), one Sn(1), and one O(4) atom. In the fourth S site, S(4) is bonded to one K(2), one K(3), one K(4), two equivalent K(1), and one Sn(1) atom to form SK5Sn octahedra that share corners with two equivalent S(2)K5Sn octahedra, corners with three equivalent O(3)K3S tetrahedra,  an edgeedge with one S(4)K5Sn octahedra, and edges with three equivalent S(2)K5Sn octahedra. The corner-sharing octahedral tilt angles range from 13-30°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted square co-planar geometry to one K(3), two equivalent K(4), and one O(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(2), one K(4), and one O(1) atom. In the third O site, O(3) is bonded to one K(4), two equivalent K(3), and one S(1) atom to form distorted OK3S tetrahedra that share  a cornercorner with one K(4)S3O5 hexagonal bipyramid, corners with two equivalent S(2)K5Sn octahedra, corners with three equivalent S(4)K5Sn octahedra,  a cornercorner with one Sn(1)S4 tetrahedra, and  an edgeedge with one O(3)K3S tetrahedra. The corner-sharing octahedral tilt angles range from 1-92°. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one K(1), one K(2), one K(3), one K(4), and one S(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K4Sn(SO)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.773
_cell_length_b   8.046
_cell_length_c   11.872
_cell_angle_alpha   93.639
_cell_angle_beta   91.003
_cell_angle_gamma   110.566
_symmetry_Int_Tables_number   1
_cell_volume   693.197
_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  0.203  0.835  0.472  1.0
  K  K1  1  0.797  0.165  0.528  1.0
  K  K2  1  0.597  0.619  0.350  1.0
  K  K3  1  0.403  0.381  0.650  1.0
  K  K4  1  0.422  0.995  0.833  1.0
  K  K5  1  0.578  0.005  0.167  1.0
  K  K6  1  0.044  0.721  0.105  1.0
  K  K7  1  0.956  0.279  0.895  1.0
  Sn  Sn8  1  0.813  0.786  0.717  1.0
  Sn  Sn9  1  0.187  0.214  0.283  1.0
  S  S10  1  0.745  0.790  0.924  1.0
  S  S11  1  0.255  0.210  0.076  1.0
  S  S12  1  0.550  0.785  0.607  1.0
  S  S13  1  0.450  0.215  0.393  1.0
  S  S14  1  0.887  0.505  0.701  1.0
  S  S15  1  0.113  0.495  0.299  1.0
  S  S16  1  0.080  0.037  0.688  1.0
  S  S17  1  0.920  0.963  0.312  1.0
  O  O18  1  0.271  0.643  0.928  1.0
  O  O19  1  0.729  0.357  0.072  1.0
  O  O20  1  0.634  0.444  0.120  1.0
  O  O21  1  0.366  0.556  0.880  1.0
  O  O22  1  0.298  0.036  0.043  1.0
  O  O23  1  0.702  0.964  0.957  1.0
  O  O24  1  0.290  0.670  0.278  1.0
  O  O25  1  0.710  0.330  0.722  1.0
[/CIF]
.