data_Sr2TaPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.99
_cell_length_b   5.99
_cell_length_c   5.99
_cell_angle_alpha   137.37
_cell_angle_beta   137.37
_cell_angle_gamma   61.86
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2TaPt
_chemical_formula_sum   'Sr2 Ta1 Pt1'
_cell_volume   97.28
_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  Sr1  1  0.0  0.18  0.57  1.0
  Sr  Sr2  1  0.18  0.0  0.57  1.0
  Ta  Ta3  1  0.0  0.0  0.0  1.0
  Pt  Pt0  1  0.0  0.0  0.14  1.0

data_Sr2TaPt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.16
_cell_length_b   6.16
_cell_length_c   5.99
_cell_angle_alpha   90.0
_cell_angle_beta   120.93
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sr2TaPt
_chemical_formula_sum   'Sr4 Ta2 Pt2'
_cell_volume   194.57
_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
  Sr  Sr0  4  0.41  0.41  0.39  1.0
  Ta  Ta1  2  0.0  0.0  0.0  1.0
  Pt  Pt2  2  0.0  0.0  0.14  1.0

Sr Sr Ta Pt
Sr2TaPt crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Sr2TaPt clusters. Sr(1) is bonded in a 2-coordinate geometry to one Sr(1) and one Pt(1) atom. The Sr(1)-Sr(1) bond length is 1.08 Å. The Sr(1)-Pt(1) bond length is 1.95 Å. Ta(1) is bonded in a single-bond geometry to one Pt(1) atom. The Ta(1)-Pt(1) bond length is 0.81 Å. Pt(1) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one Ta(1) atom.