data_Sr2TaPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.75
_cell_length_b   5.75
_cell_length_c   3.24
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   109.47
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2TaPt
_chemical_formula_sum   'Sr2 Ta1 Pt1'
_cell_volume   101.06
_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  0.66  0.65  0.62  1.0
  Sr  Sr2  1  0.66  0.35  0.62  1.0
  Ta  Ta3  1  0.0  0.0  0.0  1.0
  Pt  Pt0  1  0.32  0.0  0.0  1.0

data_Sr2TaPt
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.24
_cell_length_b   5.75
_cell_length_c   5.75
_cell_angle_alpha   109.47
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2TaPt
_chemical_formula_sum   'Sr2 Ta1 Pt1'
_cell_volume   101.06
_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  Sr0  1  0.62  0.66  0.35  1.0
  Sr  Sr1  1  0.62  0.66  0.65  1.0
  Ta  Ta2  1  0.0  0.0  0.0  1.0
  Pt  Pt3  1  -0.0  0.32  0.0  1.0

Sr Sr Ta Pt
Sr Sr Ta Pt 0 1 o o o 2 3 o o o 
Sr2TaPt crystallizes in the triclinic P1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 4-coordinate geometry to one Sr(2), two equivalent Ta(1), and one Pt(1) atom. The Sr(1)-Sr(2) bond length is 1.73 Å. There is one shorter (2.60 Å) and one longer (3.04 Å) Sr(1)-Ta(1) bond length. The Sr(1)-Pt(1) bond length is 3.46 Å. In the second Sr site, Sr(2) is bonded in a 3-coordinate geometry to one Sr(1) and two equivalent Pt(1) atoms. There is one shorter (2.60 Å) and one longer (3.04 Å) Sr(2)-Pt(1) bond length. Ta(1) is bonded in a 1-coordinate geometry to two equivalent Sr(1) and one Pt(1) atom. The Ta(1)-Pt(1) bond length is 1.86 Å. Pt(1) is bonded in a 2-coordinate geometry to one Sr(1), two equivalent Sr(2), and one Ta(1) atom.