data_GaPtSe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.94
_cell_length_b   4.94
_cell_length_c   3.01
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GaPtSe2
_chemical_formula_sum   'Ga1 Pt1 Se2'
_cell_volume   73.52
_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
  Ga  Ga0  1  0.0  0.0  0.0  1.0
  Pt  Pt1  1  0.47  0.47  0.0  1.0
  Se  Se2  1  0.47  0.0  0.51  1.0
  Se  Se3  1  0.0  0.47  0.51  1.0

data_GaPtSe2
_symmetry_space_group_name_H-M   Amm2
_cell_length_a   3.01
_cell_length_b   6.99
_cell_length_c   6.99
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   38
_chemical_formula_structural   GaPtSe2
_chemical_formula_sum   'Ga2 Pt2 Se4'
_cell_volume   147.04
_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, y+1/2, z+1/2'
  6  '-x, -y+1/2, z+1/2'
  7  '-x, y+1/2, z+1/2'
  8  'x, -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
  Ga  Ga0  2  0.0  0.0  0.0  1.0
  Pt  Pt1  2  0.0  0.0  0.47  1.0
  Se  Se2  4  0.5  0.24  0.24  1.0

Ga Pt Se Se
PtGaSe2 is alpha iridium vanadium-derived structured and crystallizes in the monoclinic Cm space group. Pt(1) is bonded in a distorted body-centered cubic geometry to eight equivalent Se(1) atoms. There are a spread of Pt(1)-Se(1) bond distances ranging from 2.76-3.03 Å. Ga(1) is bonded in a distorted body-centered cubic geometry to eight equivalent Se(1) atoms. There are a spread of Ga(1)-Se(1) bond distances ranging from 2.76-3.03 Å. Se(1) is bonded in a 8-coordinate geometry to four equivalent Pt(1) and four equivalent Ga(1) atoms.