data_SrCaCr2O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.49
_cell_length_b   5.49
_cell_length_c   3.79
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrCaCr2O6
_chemical_formula_sum   'Sr1 Ca1 Cr2 O6'
_cell_volume   114.31
_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
  Sr  Sr0  1  0.75  0.75  0.0  1.0
  Ca  Ca1  1  0.0  0.0  0.0  1.0
  Cr  Cr2  1  0.0  0.75  0.9  1.0
  Cr  Cr3  1  0.75  0.0  0.9  1.0
  O  O4  1  0.14  0.14  0.9  1.0
  O  O5  1  0.35  0.35  0.9  1.0
  O  O6  1  0.14  0.35  0.9  1.0
  O  O7  1  0.35  0.14  0.9  1.0
  O  O8  1  0.0  0.75  0.0  1.0
  O  O9  1  0.75  0.0  0.0  1.0

data_SrCaCr2O6
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.77
_cell_length_b   7.77
_cell_length_c   3.79
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrCaCr2O6
_chemical_formula_sum   'Sr2 Ca2 Cr4 O12'
_cell_volume   228.62
_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
  Sr  Sr0  2  0.25  0.5  0.0  1.0
  Ca  Ca1  2  0.0  0.0  0.0  1.0
  Cr  Cr2  4  0.37  0.37  0.9  1.0
  O  O3  4  0.25  0.1  0.9  1.0
  O  O4  4  0.37  0.37  0.0  1.0
  O  O5  2  0.14  0.0  0.9  1.0
  O  O6  2  0.35  0.0  0.9  1.0

Sr Ca Cr Cr O O O O O O