data_ZnSiAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.26
_cell_length_b   6.26
_cell_length_c   6.26
_cell_angle_alpha   147.61
_cell_angle_beta   145.57
_cell_angle_gamma   47.99
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ZnSiAs2
_chemical_formula_sum   'Zn1 Si1 As2'
_cell_volume   73.88
_cell_formula_units_Z   1
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
  Zn  Zn3  1  0.0  0.85  0.4  1.0
  Si  Si2  1  0.0  0.0  0.23  1.0
  As  As0  1  0.0  0.0  0.43  1.0
  As  As1  1  0.75  0.0  0.36  1.0

data_ZnSiAs2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.49
_cell_length_b   3.7
_cell_length_c   6.26
_cell_angle_alpha   107.22
_cell_angle_beta   106.2
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ZnSiAs2
_chemical_formula_sum   'Zn1 Si1 As2'
_cell_volume   73.88
_cell_formula_units_Z   1
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
  Zn  Zn0  1  0.15  0.55  0.55  1.0
  Si  Si1  1  0.0  0.23  0.23  1.0
  As  As2  1  0.0  0.36  0.62  1.0
  As  As3  1  0.0  0.43  0.43  1.0

Zn Si As As