The structure described by Cs2ZnI4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 9-coordinate geometry to two equivalent I(2), two equivalent I(3), two equivalent I(4), and three equivalent I(1) atoms. In the second Cs site, Cs(2) is bonded in a 7-coordinate geometry to one I(1), two equivalent I(2), two equivalent I(3), and two equivalent I(4) atoms. Zn(1) is bonded in a tetrahedral geometry to one I(1), one I(2), one I(3), and one I(4) atom. There are four inequivalent I sites. In the first I site, I(1) is bonded in a 5-coordinate geometry to one Cs(2), three equivalent Cs(1), and one Zn(1) atom. In the second I site, I(2) is bonded in a 1-coordinate geometry to two equivalent Cs(1), two equivalent Cs(2), and one Zn(1) atom. In the third I site, I(3) is bonded in a distorted single-bond geometry to two equivalent Cs(1), two equivalent Cs(2), and one Zn(1) atom. In the fourth I site, I(4) is bonded in a distorted single-bond geometry to two equivalent Cs(1), two equivalent Cs(2), and one Zn(1) atom. is represented by the CIF file [CIF]
data_Cs2ZnI4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.362
_cell_length_b   10.958
_cell_length_c   14.612
_cell_angle_alpha   89.994
_cell_angle_beta   89.999
_cell_angle_gamma   89.911
_symmetry_Int_Tables_number   1
_cell_volume   1338.956
_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
  Cs  Cs0  1  0.250  0.524  0.167  1.0
  Cs  Cs1  1  0.250  0.024  0.333  1.0
  Cs  Cs2  1  0.750  0.476  0.833  1.0
  Cs  Cs3  1  0.750  0.976  0.667  1.0
  Cs  Cs4  1  0.250  0.871  0.904  1.0
  Cs  Cs5  1  0.250  0.371  0.596  1.0
  Cs  Cs6  1  0.750  0.129  0.096  1.0
  Cs  Cs7  1  0.750  0.629  0.404  1.0
  Zn  Zn8  1  0.250  0.265  0.922  1.0
  Zn  Zn9  1  0.250  0.766  0.578  1.0
  Zn  Zn10  1  0.750  0.735  0.078  1.0
  Zn  Zn11  1  0.750  0.235  0.422  1.0
  I  I12  1  0.250  0.503  0.900  1.0
  I  I13  1  0.249  0.003  0.599  1.0
  I  I14  1  0.751  0.497  0.099  1.0
  I  I15  1  0.750  0.997  0.400  1.0
  I  I16  1  0.249  0.190  0.092  1.0
  I  I17  1  0.250  0.690  0.408  1.0
  I  I18  1  0.751  0.810  0.908  1.0
  I  I19  1  0.750  0.310  0.592  1.0
  I  I20  1  0.505  0.173  0.846  1.0
  I  I21  1  0.995  0.673  0.654  1.0
  I  I22  1  0.005  0.827  0.154  1.0
  I  I23  1  0.495  0.327  0.346  1.0
  I  I24  1  0.495  0.827  0.154  1.0
  I  I25  1  0.005  0.327  0.346  1.0
  I  I26  1  0.995  0.173  0.846  1.0
  I  I27  1  0.505  0.673  0.654  1.0
[/CIF]
.
The structure described by Cs2ZnI4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 9-coordinate geometry to two equivalent I(2), two equivalent I(3), two equivalent I(4), and three equivalent I(1) atoms. In the second Cs site, Cs(2) is bonded in a 7-coordinate geometry to one I(1), two equivalent I(2), two equivalent I(3), and two equivalent I(4) atoms. Zn(1) is bonded in a tetrahedral geometry to one I(1), one I(2), one I(3), and one I(4) atom. There are four inequivalent I sites. In the first I site, I(1) is bonded in a 5-coordinate geometry to one Cs(2), three equivalent Cs(1), and one Zn(1) atom. In the second I site, I(2) is bonded in a 1-coordinate geometry to two equivalent Cs(1), two equivalent Cs(2), and one Zn(1) atom. In the third I site, I(3) is bonded in a distorted single-bond geometry to two equivalent Cs(1), two equivalent Cs(2), and one Zn(1) atom. In the fourth I site, I(4) is bonded in a distorted single-bond geometry to two equivalent Cs(1), two equivalent Cs(2), and one Zn(1) atom. is represented by the CIF file [CIF]
data_Cs2ZnI4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.362
_cell_length_b   10.958
_cell_length_c   14.612
_cell_angle_alpha   89.994
_cell_angle_beta   89.999
_cell_angle_gamma   89.911
_symmetry_Int_Tables_number   1
_cell_volume   1338.956
_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
  Cs  Cs0  1  0.250  0.524  0.167  1.0
  Cs  Cs1  1  0.250  0.024  0.333  1.0
  Cs  Cs2  1  0.750  0.476  0.833  1.0
  Cs  Cs3  1  0.750  0.976  0.667  1.0
  Cs  Cs4  1  0.250  0.871  0.904  1.0
  Cs  Cs5  1  0.250  0.371  0.596  1.0
  Cs  Cs6  1  0.750  0.129  0.096  1.0
  Cs  Cs7  1  0.750  0.629  0.404  1.0
  Zn  Zn8  1  0.250  0.265  0.922  1.0
  Zn  Zn9  1  0.250  0.766  0.578  1.0
  Zn  Zn10  1  0.750  0.735  0.078  1.0
  Zn  Zn11  1  0.750  0.235  0.422  1.0
  I  I12  1  0.250  0.503  0.900  1.0
  I  I13  1  0.249  0.003  0.599  1.0
  I  I14  1  0.751  0.497  0.099  1.0
  I  I15  1  0.750  0.997  0.400  1.0
  I  I16  1  0.249  0.190  0.092  1.0
  I  I17  1  0.250  0.690  0.408  1.0
  I  I18  1  0.751  0.810  0.908  1.0
  I  I19  1  0.750  0.310  0.592  1.0
  I  I20  1  0.505  0.173  0.846  1.0
  I  I21  1  0.995  0.673  0.654  1.0
  I  I22  1  0.005  0.827  0.154  1.0
  I  I23  1  0.495  0.327  0.346  1.0
  I  I24  1  0.495  0.827  0.154  1.0
  I  I25  1  0.005  0.327  0.346  1.0
  I  I26  1  0.995  0.173  0.846  1.0
  I  I27  1  0.505  0.673  0.654  1.0
[/CIF]
.