The compound described by Rb2Cu2SnS4 crystallizes in the orthorhombic Ibam space group. Rb(1) is bonded in a distorted body-centered cubic geometry to eight equivalent S(1) atoms. Cu(1) is bonded to four equivalent S(1) atoms to form distorted CuS4 tetrahedra that share corners with two equivalent Sn(1)S4 tetrahedra,  an edgeedge with one Sn(1)S4 tetrahedra, and edges with two equivalent Cu(1)S4 tetrahedra. Sn(1) is bonded to four equivalent S(1) atoms to form SnS4 tetrahedra that share corners with four equivalent Cu(1)S4 tetrahedra and edges with two equivalent Cu(1)S4 tetrahedra. S(1) is bonded in a 7-coordinate geometry to four equivalent Rb(1), two equivalent Cu(1), and one Sn(1) atom. is represented by the CIF card [CIF]
data_Rb2Cu2SnS4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.490
_cell_length_b   9.490
_cell_length_c   9.490
_cell_angle_alpha   146.434
_cell_angle_beta   103.467
_cell_angle_gamma   86.209
_symmetry_Int_Tables_number   1
_cell_volume   446.410
_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
  Rb  Rb0  1  0.624  0.772  0.396  1.0
  Rb  Rb1  1  0.876  0.272  0.147  1.0
  Rb  Rb2  1  0.124  0.728  0.853  1.0
  Rb  Rb3  1  0.376  0.228  0.604  1.0
  Cu  Cu4  1  0.025  0.750  0.275  1.0
  Cu  Cu5  1  0.475  0.750  0.725  1.0
  Cu  Cu6  1  0.975  0.250  0.725  1.0
  Cu  Cu7  1  0.525  0.250  0.275  1.0
  Sn  Sn8  1  0.750  0.750  0.000  1.0
  Sn  Sn9  1  0.250  0.250  0.000  1.0
  S  S10  1  0.719  0.622  0.638  1.0
  S  S11  1  0.781  0.419  0.903  1.0
  S  S12  1  0.517  0.878  0.097  1.0
  S  S13  1  0.983  0.081  0.362  1.0
  S  S14  1  0.281  0.378  0.362  1.0
  S  S15  1  0.219  0.581  0.097  1.0
  S  S16  1  0.017  0.919  0.638  1.0
  S  S17  1  0.483  0.122  0.903  1.0
[/CIF]
.
The compound described by Rb2Cu2SnS4 crystallizes in the orthorhombic Ibam space group. Rb(1) is bonded in a distorted body-centered cubic geometry to eight equivalent S(1) atoms. Cu(1) is bonded to four equivalent S(1) atoms to form distorted CuS4 tetrahedra that share corners with two equivalent Sn(1)S4 tetrahedra,  an edgeedge with one Sn(1)S4 tetrahedra, and edges with two equivalent Cu(1)S4 tetrahedra. Sn(1) is bonded to four equivalent S(1) atoms to form SnS4 tetrahedra that share corners with four equivalent Cu(1)S4 tetrahedra and edges with two equivalent Cu(1)S4 tetrahedra. S(1) is bonded in a 7-coordinate geometry to four equivalent Rb(1), two equivalent Cu(1), and one Sn(1) atom. is represented by the CIF card [CIF]
data_Rb2Cu2SnS4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.490
_cell_length_b   9.490
_cell_length_c   9.490
_cell_angle_alpha   146.434
_cell_angle_beta   103.467
_cell_angle_gamma   86.209
_symmetry_Int_Tables_number   1
_cell_volume   446.410
_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
  Rb  Rb0  1  0.624  0.772  0.396  1.0
  Rb  Rb1  1  0.876  0.272  0.147  1.0
  Rb  Rb2  1  0.124  0.728  0.853  1.0
  Rb  Rb3  1  0.376  0.228  0.604  1.0
  Cu  Cu4  1  0.025  0.750  0.275  1.0
  Cu  Cu5  1  0.475  0.750  0.725  1.0
  Cu  Cu6  1  0.975  0.250  0.725  1.0
  Cu  Cu7  1  0.525  0.250  0.275  1.0
  Sn  Sn8  1  0.750  0.750  0.000  1.0
  Sn  Sn9  1  0.250  0.250  0.000  1.0
  S  S10  1  0.719  0.622  0.638  1.0
  S  S11  1  0.781  0.419  0.903  1.0
  S  S12  1  0.517  0.878  0.097  1.0
  S  S13  1  0.983  0.081  0.362  1.0
  S  S14  1  0.281  0.378  0.362  1.0
  S  S15  1  0.219  0.581  0.097  1.0
  S  S16  1  0.017  0.919  0.638  1.0
  S  S17  1  0.483  0.122  0.903  1.0
[/CIF]
.