The compound described by Sr7Pt3 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 3-coordinate geometry to one Pt(2) and two equivalent Pt(1) atoms. In the second Sr site, Sr(2) is bonded in a 3-coordinate geometry to three equivalent Pt(1) atoms. In the third Sr site, Sr(3) is bonded in a distorted bent 150 degrees geometry to two equivalent Pt(2) atoms. In the fourth Sr site, Sr(4) is bonded to two equivalent Pt(1) and two equivalent Pt(2) atoms to form a mixture of distorted edge and corner-sharing SrPt4 tetrahedra. There are two inequivalent Pt sites. In the first Pt site, Pt(2) is bonded in a 8-coordinate geometry to two equivalent Sr(1), two equivalent Sr(3), and four equivalent Sr(4) atoms. In the second Pt site, Pt(1) is bonded in a 7-coordinate geometry to two equivalent Sr(1), two equivalent Sr(4), and three equivalent Sr(2) atoms. is represented by the CIF file [CIF]
data_Sr7Pt3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.192
_cell_length_b   7.979
_cell_length_c   24.370
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1398.553
_cell_formula_units_Z   4
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  0.656  0.456  0.382  1.0
  Sr  Sr1  1  0.156  0.044  0.618  1.0
  Sr  Sr2  1  0.844  0.956  0.118  1.0
  Sr  Sr3  1  0.344  0.544  0.882  1.0
  Sr  Sr4  1  0.344  0.544  0.618  1.0
  Sr  Sr5  1  0.844  0.956  0.382  1.0
  Sr  Sr6  1  0.156  0.044  0.882  1.0
  Sr  Sr7  1  0.656  0.456  0.118  1.0
  Sr  Sr8  1  0.177  0.333  0.477  1.0
  Sr  Sr9  1  0.677  0.167  0.523  1.0
  Sr  Sr10  1  0.323  0.833  0.023  1.0
  Sr  Sr11  1  0.823  0.667  0.977  1.0
  Sr  Sr12  1  0.648  0.176  0.250  1.0
  Sr  Sr13  1  0.148  0.324  0.750  1.0
  Sr  Sr14  1  0.852  0.676  0.250  1.0
  Sr  Sr15  1  0.352  0.824  0.750  1.0
  Sr  Sr16  1  0.187  0.320  0.174  1.0
  Sr  Sr17  1  0.687  0.180  0.826  1.0
  Sr  Sr18  1  0.313  0.820  0.326  1.0
  Sr  Sr19  1  0.813  0.680  0.674  1.0
  Sr  Sr20  1  0.813  0.680  0.826  1.0
  Sr  Sr21  1  0.313  0.820  0.174  1.0
  Sr  Sr22  1  0.687  0.180  0.674  1.0
  Sr  Sr23  1  0.187  0.320  0.326  1.0
  Sr  Sr24  1  0.177  0.333  0.023  1.0
  Sr  Sr25  1  0.677  0.167  0.977  1.0
  Sr  Sr26  1  0.323  0.833  0.477  1.0
  Sr  Sr27  1  0.823  0.667  0.523  1.0
  Pt  Pt28  1  0.464  0.123  0.405  1.0
  Pt  Pt29  1  0.964  0.377  0.595  1.0
  Pt  Pt30  1  0.036  0.623  0.095  1.0
  Pt  Pt31  1  0.536  0.877  0.905  1.0
  Pt  Pt32  1  0.536  0.877  0.595  1.0
  Pt  Pt33  1  0.036  0.623  0.405  1.0
  Pt  Pt34  1  0.964  0.377  0.905  1.0
  Pt  Pt35  1  0.464  0.123  0.095  1.0
  Pt  Pt36  1  0.967  0.979  0.750  1.0
  Pt  Pt37  1  0.467  0.521  0.250  1.0
  Pt  Pt38  1  0.533  0.479  0.750  1.0
  Pt  Pt39  1  0.033  0.021  0.250  1.0
[/CIF]
.
The compound described by Sr7Pt3 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 3-coordinate geometry to one Pt(2) and two equivalent Pt(1) atoms. In the second Sr site, Sr(2) is bonded in a 3-coordinate geometry to three equivalent Pt(1) atoms. In the third Sr site, Sr(3) is bonded in a distorted bent 150 degrees geometry to two equivalent Pt(2) atoms. In the fourth Sr site, Sr(4) is bonded to two equivalent Pt(1) and two equivalent Pt(2) atoms to form a mixture of distorted edge and corner-sharing SrPt4 tetrahedra. There are two inequivalent Pt sites. In the first Pt site, Pt(2) is bonded in a 8-coordinate geometry to two equivalent Sr(1), two equivalent Sr(3), and four equivalent Sr(4) atoms. In the second Pt site, Pt(1) is bonded in a 7-coordinate geometry to two equivalent Sr(1), two equivalent Sr(4), and three equivalent Sr(2) atoms. is represented by the CIF file [CIF]
data_Sr7Pt3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.192
_cell_length_b   7.979
_cell_length_c   24.370
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1398.553
_cell_formula_units_Z   4
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  0.656  0.456  0.382  1.0
  Sr  Sr1  1  0.156  0.044  0.618  1.0
  Sr  Sr2  1  0.844  0.956  0.118  1.0
  Sr  Sr3  1  0.344  0.544  0.882  1.0
  Sr  Sr4  1  0.344  0.544  0.618  1.0
  Sr  Sr5  1  0.844  0.956  0.382  1.0
  Sr  Sr6  1  0.156  0.044  0.882  1.0
  Sr  Sr7  1  0.656  0.456  0.118  1.0
  Sr  Sr8  1  0.177  0.333  0.477  1.0
  Sr  Sr9  1  0.677  0.167  0.523  1.0
  Sr  Sr10  1  0.323  0.833  0.023  1.0
  Sr  Sr11  1  0.823  0.667  0.977  1.0
  Sr  Sr12  1  0.648  0.176  0.250  1.0
  Sr  Sr13  1  0.148  0.324  0.750  1.0
  Sr  Sr14  1  0.852  0.676  0.250  1.0
  Sr  Sr15  1  0.352  0.824  0.750  1.0
  Sr  Sr16  1  0.187  0.320  0.174  1.0
  Sr  Sr17  1  0.687  0.180  0.826  1.0
  Sr  Sr18  1  0.313  0.820  0.326  1.0
  Sr  Sr19  1  0.813  0.680  0.674  1.0
  Sr  Sr20  1  0.813  0.680  0.826  1.0
  Sr  Sr21  1  0.313  0.820  0.174  1.0
  Sr  Sr22  1  0.687  0.180  0.674  1.0
  Sr  Sr23  1  0.187  0.320  0.326  1.0
  Sr  Sr24  1  0.177  0.333  0.023  1.0
  Sr  Sr25  1  0.677  0.167  0.977  1.0
  Sr  Sr26  1  0.323  0.833  0.477  1.0
  Sr  Sr27  1  0.823  0.667  0.523  1.0
  Pt  Pt28  1  0.464  0.123  0.405  1.0
  Pt  Pt29  1  0.964  0.377  0.595  1.0
  Pt  Pt30  1  0.036  0.623  0.095  1.0
  Pt  Pt31  1  0.536  0.877  0.905  1.0
  Pt  Pt32  1  0.536  0.877  0.595  1.0
  Pt  Pt33  1  0.036  0.623  0.405  1.0
  Pt  Pt34  1  0.964  0.377  0.905  1.0
  Pt  Pt35  1  0.464  0.123  0.095  1.0
  Pt  Pt36  1  0.967  0.979  0.750  1.0
  Pt  Pt37  1  0.467  0.521  0.250  1.0
  Pt  Pt38  1  0.533  0.479  0.750  1.0
  Pt  Pt39  1  0.033  0.021  0.250  1.0
[/CIF]
.