data_SiGeP
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.32
_cell_length_b   5.32
_cell_length_c   5.32
_cell_angle_alpha   144.64
_cell_angle_beta   144.64
_cell_angle_gamma   50.88
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiGeP
_chemical_formula_sum   'Si1 Ge1 P1'
_cell_volume   50.13
_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
  Si  Si2  1  0.0  0.0  0.75  1.0
  Ge  Ge0  1  0.0  0.0  0.54  1.0
  P  P1  1  0.0  0.0  0.92  1.0

data_SiGeP
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.57
_cell_length_b   4.57
_cell_length_c   5.32
_cell_angle_alpha   90.0
_cell_angle_beta   115.44
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SiGeP
_chemical_formula_sum   'Si2 Ge2 P2'
_cell_volume   100.27
_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
  Si  Si0  2  0.0  0.0  0.25  1.0
  Ge  Ge1  2  0.0  0.0  0.46  1.0
  P  P2  2  0.0  0.0  0.08  1.0

Si Ge P