data_Sr2CaNi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.59
_cell_length_b   6.59
_cell_length_c   6.59
_cell_angle_alpha   135.44
_cell_angle_beta   135.44
_cell_angle_gamma   64.85
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2CaNi
_chemical_formula_sum   'Sr2 Ca1 Ni1'
_cell_volume   139.08
_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  Sr2  1  0.0  0.0  0.56  1.0
  Sr  Sr3  1  0.5  0.0  0.78  1.0
  Ca  Ca0  1  0.0  0.0  0.0  1.0
  Ni  Ni1  1  0.0  0.5  0.78  1.0

data_Sr2CaNi
_symmetry_space_group_name_H-M   P1
_cell_length_a   5.0
_cell_length_b   5.0
_cell_length_c   6.59
_cell_angle_alpha   112.28
_cell_angle_beta   112.28
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2CaNi
_chemical_formula_sum   'Sr2 Ca1 Ni1'
_cell_volume   139.08
_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  0.56  0.56  0.56  1.0
  Sr  Sr1  1  0.78  0.28  0.28  1.0
  Ca  Ca2  1  0.0  0.0  0.0  1.0
  Ni  Ni3  1  0.28  0.78  0.28  1.0

Sr Sr Ca Ni
Sr Sr Ca Ni 0 3 o o o 0 1 o o o 0 2 o o + 1 2 + o + 2 3 o - - 