The compound described by SrPt2As2 crystallizes in the tetragonal P4/nmm space group. Sr(1) is bonded in a 16-coordinate geometry to four equivalent Pt(1), four equivalent Pt(2), four equivalent As(1), and four equivalent As(2) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent As(1) atoms. In the second Pt site, Pt(2) is bonded in a 5-coordinate geometry to four equivalent Sr(1), one As(1), and four equivalent As(2) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 9-coordinate geometry to four equivalent Sr(1), one Pt(2), and four equivalent Pt(1) atoms. In the second As site, As(2) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent Pt(2) atoms. is represented by the CIF file [CIF]
data_Sr(AsPt)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.543
_cell_length_b   4.543
_cell_length_c   9.994
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   206.294
_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
  Sr  Sr0  1  0.000  0.500  0.252  1.0
  Sr  Sr1  1  0.500  0.000  0.748  1.0
  As  As2  1  0.000  0.500  0.872  1.0
  As  As3  1  0.500  0.000  0.128  1.0
  As  As4  1  0.500  0.500  0.500  1.0
  As  As5  1  0.000  0.000  0.500  1.0
  Pt  Pt6  1  0.500  0.500  0.000  1.0
  Pt  Pt7  1  0.000  0.000  0.000  1.0
  Pt  Pt8  1  0.000  0.500  0.618  1.0
  Pt  Pt9  1  0.500  0.000  0.382  1.0
[/CIF]
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The compound described by SrPt2As2 crystallizes in the tetragonal P4/nmm space group. Sr(1) is bonded in a 16-coordinate geometry to four equivalent Pt(1), four equivalent Pt(2), four equivalent As(1), and four equivalent As(2) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent As(1) atoms. In the second Pt site, Pt(2) is bonded in a 5-coordinate geometry to four equivalent Sr(1), one As(1), and four equivalent As(2) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 9-coordinate geometry to four equivalent Sr(1), one Pt(2), and four equivalent Pt(1) atoms. In the second As site, As(2) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent Pt(2) atoms. is represented by the CIF file [CIF]
data_Sr(AsPt)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.543
_cell_length_b   4.543
_cell_length_c   9.994
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   206.294
_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
  Sr  Sr0  1  0.000  0.500  0.252  1.0
  Sr  Sr1  1  0.500  0.000  0.748  1.0
  As  As2  1  0.000  0.500  0.872  1.0
  As  As3  1  0.500  0.000  0.128  1.0
  As  As4  1  0.500  0.500  0.500  1.0
  As  As5  1  0.000  0.000  0.500  1.0
  Pt  Pt6  1  0.500  0.500  0.000  1.0
  Pt  Pt7  1  0.000  0.000  0.000  1.0
  Pt  Pt8  1  0.000  0.500  0.618  1.0
  Pt  Pt9  1  0.500  0.000  0.382  1.0
[/CIF]
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