data_Pt2S
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.22
_cell_length_b   5.22
_cell_length_c   4.0
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Pt2S
_chemical_formula_sum   'Pt4 S2'
_cell_volume   108.91
_cell_formula_units_Z   2
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
  Pt  Pt0  1  0.67  0.67  0.0  1.0
  Pt  Pt1  1  0.55  0.55  0.0  1.0
  Pt  Pt2  1  0.28  0.94  1.0  1.0
  Pt  Pt3  1  0.94  0.28  1.0  1.0
  S  S4  1  0.0  0.0  0.0  1.0
  S  S5  1  0.61  0.61  1.0  1.0

data_Pt2S
_symmetry_space_group_name_H-M   Amm2
_cell_length_a   4.0
_cell_length_b   7.38
_cell_length_c   7.38
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   38
_chemical_formula_structural   Pt2S
_chemical_formula_sum   'Pt8 S4'
_cell_volume   217.81
_cell_formula_units_Z   4
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
  Pt  Pt0  4  0.0  0.17  0.11  1.0
  Pt  Pt1  2  0.0  0.0  0.55  1.0
  Pt  Pt2  2  0.0  0.0  0.67  1.0
  S  S3  2  0.0  0.0  0.0  1.0
  S  S4  2  0.0  0.0  0.61  1.0

Pt Pt Pt Pt S S
Pt2S is alpha Po structured and crystallizes in the orthorhombic Amm2 space group. The structure is zero-dimensional and consists of two Pt2S clusters. There are three inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a single-bond geometry to one S(1) and one S(2) atom. The Pt(1)-S(1) bond length is 2.45 Å. The Pt(1)-S(2) bond length is 0.44 Å. In the second Pt site, Pt(2) is bonded in a single-bond geometry to one S(2) atom. The Pt(2)-S(2) bond length is 0.44 Å. In the third Pt site, Pt(3) is bonded in a single-bond geometry to one S(1) atom. The Pt(3)-S(1) bond length is 1.48 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded in a trigonal planar geometry to one Pt(1) and two equivalent Pt(3) atoms. In the second S site, S(2) is bonded in a linear geometry to one Pt(1) and one Pt(2) atom.