data_Ca2CrSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.27
_cell_length_b   6.14
_cell_length_c   6.14
_cell_angle_alpha   39.69
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ca2CrSe
_chemical_formula_sum   'Ca2 Cr1 Se1'
_cell_volume   102.87
_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
  Ca  Ca0  1  0.0  0.0  0.33  1.0
  Ca  Ca1  1  0.14  0.0  0.97  1.0
  Cr  Cr2  1  0.0  0.0  0.06  1.0
  Se  Se3  1  0.14  0.0  0.71  1.0

data_Ca2CrSe
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.17
_cell_length_b   4.27
_cell_length_c   6.14
_cell_angle_alpha   90.0
_cell_angle_beta   109.85
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ca2CrSe
_chemical_formula_sum   'Ca2 Cr1 Se1'
_cell_volume   102.87
_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
  Ca  Ca0  1  0.03  0.14  0.03  1.0
  Ca  Ca1  1  0.67  0.0  0.67  1.0
  Cr  Cr2  1  0.94  0.0  0.94  1.0
  Se  Se3  1  0.29  0.14  0.29  1.0

Ca Ca Cr Se