data_ZnAs8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.35
_cell_length_b   7.35
_cell_length_c   7.35
_cell_angle_alpha   93.89
_cell_angle_beta   93.89
_cell_angle_gamma   149.81
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ZnAs8
_chemical_formula_sum   'Zn1 As8'
_cell_volume   192.46
_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  Zn8  1  0.0  0.0  0.0  1.0
  As  As0  1  0.32  0.32  0.91  1.0
  As  As1  1  0.7  0.7  0.0  1.0
  As  As2  1  0.61  0.0  0.0  1.0
  As  As3  1  0.32  0.68  0.91  1.0
  As  As4  1  0.0  0.42  0.0  1.0
  As  As5  1  0.68  0.32  0.91  1.0
  As  As6  1  0.42  0.0  0.0  1.0
  As  As7  1  0.0  0.61  0.0  1.0

data_ZnAs8
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.83
_cell_length_b   14.18
_cell_length_c   7.35
_cell_angle_alpha   90.0
_cell_angle_beta   105.1
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   ZnAs8
_chemical_formula_sum   'Zn2 As16'
_cell_volume   384.93
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  2  0.0  0.0  0.0  1.0
  As  As1  4  0.0  0.32  0.09  1.0
  As  As2  4  0.19  0.19  0.0  1.0
  As  As3  4  0.29  0.29  0.0  1.0
  As  As4  2  0.18  0.5  0.09  1.0
  As  As5  2  0.3  0.0  0.0  1.0

Zn As As As As As As As As
Zn As As As As As As As As 0 2 - - o 0 1 o o - 1 2 o o + 3 4 o - - 3 7 o o o 3 5 + o o 4 5 o o + 5 8 o o o 6 8 + o + 6 7 o o + 7 8 o - o 