data_Zn4C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.4
_cell_length_b   5.4
_cell_length_c   5.4
_cell_angle_alpha   93.15
_cell_angle_beta   93.15
_cell_angle_gamma   152.89
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Zn4C
_chemical_formula_sum   'Zn4 C1'
_cell_volume   69.8
_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  Zn1  1  0.0  0.98  0.27  1.0
  Zn  Zn2  1  0.73  0.71  0.0  1.0
  Zn  Zn3  1  0.71  0.73  0.0  1.0
  Zn  Zn4  1  0.98  0.0  0.27  1.0
  C  C0  1  0.0  0.0  0.0  1.0

data_Zn4C
_symmetry_space_group_name_H-M   Cm
_cell_length_a   2.53
_cell_length_b   10.5
_cell_length_c   5.4
_cell_angle_alpha   90.0
_cell_angle_beta   103.55
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Zn4C
_chemical_formula_sum   'Zn8 C2'
_cell_volume   139.6
_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  4  0.28  0.01  -0.0  1.0
  Zn  Zn1  4  0.28  0.01  0.27  1.0
  C  C2  2  0.0  0.0  0.0  1.0

Zn Zn Zn Zn C