data_SrMgP
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.3
_cell_length_b   6.28
_cell_length_c   3.62
_cell_angle_alpha   73.63
_cell_angle_beta   72.9
_cell_angle_gamma   33.47
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrMgP
_chemical_formula_sum   'Sr1 Mg1 P1'
_cell_volume   75.29
_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  0.53  0.59  0.63  1.0
  Mg  Mg0  1  0.53  0.59  0.51  1.0
  P  P1  1  0.53  0.59  0.35  1.0

data_SrMgP
_symmetry_space_group_name_H-M   Imm2
_cell_length_a   3.62
_cell_length_b   11.48
_cell_length_c   3.62
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   44
_chemical_formula_structural   SrMgP
_chemical_formula_sum   'Sr2 Mg2 P2'
_cell_volume   150.61
_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, y, z'
  4  'x, -y, z'
  5  'x+1/2, y+1/2, z+1/2'
  6  '-x+1/2, -y+1/2, z+1/2'
  7  '-x+1/2, y+1/2, z+1/2'
  8  'x+1/2, -y+1/2, z+1/2'
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  0.0  0.0  0.16  1.0
  Mg  Mg1  2  0.0  0.0  0.04  1.0
  P  P2  2  0.0  0.0  0.88  1.0

Sr Mg P