The compound described by Na2ZnS2 crystallizes in the orthorhombic Pbca space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 5-coordinate geometry to two equivalent S(2) and four equivalent S(1) atoms. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one S(1) and three equivalent S(2) atoms. Zn(1) is bonded in a 3-coordinate geometry to one S(2) and three equivalent S(1) atoms. There are two inequivalent S sites. In the first S site, S(2) is bonded in a 6-coordinate geometry to two equivalent Na(1), three equivalent Na(2), and one Zn(1) atom. In the second S site, S(1) is bonded in a 8-coordinate geometry to one Na(2), four equivalent Na(1), and three equivalent Zn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2ZnS2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.756
_cell_length_b   7.165
_cell_length_c   18.676
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   903.968
_cell_formula_units_Z   8
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
  Na  Na0  1  0.989  0.686  0.068  1.0
  Na  Na1  1  0.011  0.814  0.568  1.0
  Na  Na2  1  0.511  0.186  0.932  1.0
  Na  Na3  1  0.489  0.314  0.432  1.0
  Na  Na4  1  0.011  0.314  0.932  1.0
  Na  Na5  1  0.989  0.186  0.432  1.0
  Na  Na6  1  0.489  0.814  0.068  1.0
  Na  Na7  1  0.511  0.686  0.568  1.0
  Na  Na8  1  0.678  0.544  0.201  1.0
  Na  Na9  1  0.322  0.956  0.701  1.0
  Na  Na10  1  0.822  0.044  0.799  1.0
  Na  Na11  1  0.178  0.456  0.299  1.0
  Na  Na12  1  0.322  0.456  0.799  1.0
  Na  Na13  1  0.678  0.044  0.299  1.0
  Na  Na14  1  0.178  0.956  0.201  1.0
  Na  Na15  1  0.822  0.544  0.701  1.0
  Zn  Zn16  1  0.134  0.879  0.921  1.0
  Zn  Zn17  1  0.866  0.621  0.421  1.0
  Zn  Zn18  1  0.366  0.379  0.079  1.0
  Zn  Zn19  1  0.634  0.121  0.579  1.0
  Zn  Zn20  1  0.866  0.121  0.079  1.0
  Zn  Zn21  1  0.134  0.379  0.579  1.0
  Zn  Zn22  1  0.634  0.621  0.921  1.0
  Zn  Zn23  1  0.366  0.879  0.421  1.0
  S  S24  1  0.208  0.105  0.048  1.0
  S  S25  1  0.792  0.395  0.548  1.0
  S  S26  1  0.292  0.605  0.952  1.0
  S  S27  1  0.708  0.895  0.452  1.0
  S  S28  1  0.792  0.895  0.952  1.0
  S  S29  1  0.208  0.605  0.452  1.0
  S  S30  1  0.708  0.395  0.048  1.0
  S  S31  1  0.292  0.105  0.548  1.0
  S  S32  1  0.275  0.578  0.166  1.0
  S  S33  1  0.725  0.922  0.666  1.0
  S  S34  1  0.225  0.078  0.834  1.0
  S  S35  1  0.775  0.422  0.334  1.0
  S  S36  1  0.725  0.422  0.834  1.0
  S  S37  1  0.275  0.078  0.334  1.0
  S  S38  1  0.775  0.922  0.166  1.0
  S  S39  1  0.225  0.578  0.666  1.0
[/CIF]
.
The compound described by Na2ZnS2 crystallizes in the orthorhombic Pbca space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 5-coordinate geometry to two equivalent S(2) and four equivalent S(1) atoms. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one S(1) and three equivalent S(2) atoms. Zn(1) is bonded in a 3-coordinate geometry to one S(2) and three equivalent S(1) atoms. There are two inequivalent S sites. In the first S site, S(2) is bonded in a 6-coordinate geometry to two equivalent Na(1), three equivalent Na(2), and one Zn(1) atom. In the second S site, S(1) is bonded in a 8-coordinate geometry to one Na(2), four equivalent Na(1), and three equivalent Zn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2ZnS2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.756
_cell_length_b   7.165
_cell_length_c   18.676
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   903.968
_cell_formula_units_Z   8
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
  Na  Na0  1  0.989  0.686  0.068  1.0
  Na  Na1  1  0.011  0.814  0.568  1.0
  Na  Na2  1  0.511  0.186  0.932  1.0
  Na  Na3  1  0.489  0.314  0.432  1.0
  Na  Na4  1  0.011  0.314  0.932  1.0
  Na  Na5  1  0.989  0.186  0.432  1.0
  Na  Na6  1  0.489  0.814  0.068  1.0
  Na  Na7  1  0.511  0.686  0.568  1.0
  Na  Na8  1  0.678  0.544  0.201  1.0
  Na  Na9  1  0.322  0.956  0.701  1.0
  Na  Na10  1  0.822  0.044  0.799  1.0
  Na  Na11  1  0.178  0.456  0.299  1.0
  Na  Na12  1  0.322  0.456  0.799  1.0
  Na  Na13  1  0.678  0.044  0.299  1.0
  Na  Na14  1  0.178  0.956  0.201  1.0
  Na  Na15  1  0.822  0.544  0.701  1.0
  Zn  Zn16  1  0.134  0.879  0.921  1.0
  Zn  Zn17  1  0.866  0.621  0.421  1.0
  Zn  Zn18  1  0.366  0.379  0.079  1.0
  Zn  Zn19  1  0.634  0.121  0.579  1.0
  Zn  Zn20  1  0.866  0.121  0.079  1.0
  Zn  Zn21  1  0.134  0.379  0.579  1.0
  Zn  Zn22  1  0.634  0.621  0.921  1.0
  Zn  Zn23  1  0.366  0.879  0.421  1.0
  S  S24  1  0.208  0.105  0.048  1.0
  S  S25  1  0.792  0.395  0.548  1.0
  S  S26  1  0.292  0.605  0.952  1.0
  S  S27  1  0.708  0.895  0.452  1.0
  S  S28  1  0.792  0.895  0.952  1.0
  S  S29  1  0.208  0.605  0.452  1.0
  S  S30  1  0.708  0.395  0.048  1.0
  S  S31  1  0.292  0.105  0.548  1.0
  S  S32  1  0.275  0.578  0.166  1.0
  S  S33  1  0.725  0.922  0.666  1.0
  S  S34  1  0.225  0.078  0.834  1.0
  S  S35  1  0.775  0.422  0.334  1.0
  S  S36  1  0.725  0.422  0.834  1.0
  S  S37  1  0.275  0.078  0.334  1.0
  S  S38  1  0.775  0.922  0.166  1.0
  S  S39  1  0.225  0.578  0.666  1.0
[/CIF]
.