data_Co(SiSe2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.85
_cell_length_b   6.85
_cell_length_c   6.21
_cell_angle_alpha   115.65
_cell_angle_beta   115.65
_cell_angle_gamma   30.41
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Co(SiSe2)2
_chemical_formula_sum   'Co1 Si2 Se4'
_cell_volume   132.03
_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
  Co  Co0  1  0.0  0.0  0.0  1.0
  Si  Si5  1  0.71  0.0  0.58  1.0
  Si  Si6  1  0.73  0.0  0.97  1.0
  Se  Se1  1  0.13  0.0  0.12  1.0
  Se  Se2  1  0.95  0.0  0.15  1.0
  Se  Se3  1  0.49  0.0  0.4  1.0
  Se  Se4  1  0.31  0.0  0.43  1.0

data_Co(SiSe2)2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.59
_cell_length_b   6.21
_cell_length_c   6.85
_cell_angle_alpha   115.65
_cell_angle_beta   105.21
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Co(SiSe2)2
_chemical_formula_sum   'Co1 Si2 Se4'
_cell_volume   132.03
_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
  Co  Co0  1  0.0  0.0  0.0  1.0
  Si  Si1  1  0.0  0.58  0.71  1.0
  Si  Si2  1  0.0  0.97  0.73  1.0
  Se  Se3  1  0.0  0.12  0.13  1.0
  Se  Se4  1  0.0  0.15  0.95  1.0
  Se  Se5  1  0.0  0.4  0.49  1.0
  Se  Se6  1  0.0  0.43  0.31  1.0

Co Si Si Se Se Se Se
Co Si Si Se Se Se Se 0 3 o o o 0 4 - o o 1 5 o o o 2 4 o o + 3 4 - o o 5 6 o o o 