The material structure described by Sr5Pt4 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to one Pt(3), two equivalent Pt(2), and three equivalent Pt(1) atoms. In the second Sr site, Sr(2) is bonded to one Pt(2), two equivalent Pt(3), and four equivalent Pt(1) atoms to form distorted SrPt7 pentagonal bipyramids that share corners with four equivalent Sr(3)Pt6 octahedra, corners with six equivalent Sr(2)Pt7 pentagonal bipyramids, edges with two equivalent Sr(2)Pt7 pentagonal bipyramids, faces with two equivalent Sr(3)Pt6 octahedra, and faces with three equivalent Sr(2)Pt7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 46-54°. In the third Sr site, Sr(3) is bonded to two equivalent Pt(1), two equivalent Pt(2), and two equivalent Pt(3) atoms to form distorted SrPt6 octahedra that share corners with four equivalent Sr(3)Pt6 octahedra, corners with eight equivalent Sr(2)Pt7 pentagonal bipyramids, and faces with four equivalent Sr(2)Pt7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 55°. There are three inequivalent Pt sites. In the first Pt site, Pt(3) is bonded in a 9-coordinate geometry to two equivalent Sr(1), two equivalent Sr(3), four equivalent Sr(2), and one Pt(2) atom. In the second Pt site, Pt(1) is bonded in a 9-coordinate geometry to one Sr(3), three equivalent Sr(1), four equivalent Sr(2), and one Pt(1) atom. In the third Pt site, Pt(2) is bonded in a 9-coordinate geometry to two equivalent Sr(2), two equivalent Sr(3), four equivalent Sr(1), and one Pt(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr5Pt4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.896
_cell_length_b   8.223
_cell_length_c   15.734
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1021.695
_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  0.343  0.828  0.879  1.0
  Sr  Sr1  1  0.843  0.672  0.621  1.0
  Sr  Sr2  1  0.657  0.172  0.379  1.0
  Sr  Sr3  1  0.157  0.328  0.121  1.0
  Sr  Sr4  1  0.657  0.172  0.121  1.0
  Sr  Sr5  1  0.157  0.328  0.379  1.0
  Sr  Sr6  1  0.343  0.828  0.621  1.0
  Sr  Sr7  1  0.843  0.672  0.879  1.0
  Sr  Sr8  1  0.499  0.319  0.905  1.0
  Sr  Sr9  1  0.999  0.181  0.595  1.0
  Sr  Sr10  1  0.501  0.681  0.405  1.0
  Sr  Sr11  1  0.001  0.819  0.095  1.0
  Sr  Sr12  1  0.501  0.681  0.095  1.0
  Sr  Sr13  1  0.001  0.819  0.405  1.0
  Sr  Sr14  1  0.499  0.319  0.595  1.0
  Sr  Sr15  1  0.999  0.181  0.905  1.0
  Sr  Sr16  1  0.184  0.487  0.750  1.0
  Sr  Sr17  1  0.684  0.013  0.750  1.0
  Sr  Sr18  1  0.816  0.513  0.250  1.0
  Sr  Sr19  1  0.316  0.987  0.250  1.0
  Pt  Pt20  1  0.332  0.030  0.039  1.0
  Pt  Pt21  1  0.832  0.470  0.461  1.0
  Pt  Pt22  1  0.668  0.970  0.539  1.0
  Pt  Pt23  1  0.168  0.530  0.961  1.0
  Pt  Pt24  1  0.668  0.970  0.961  1.0
  Pt  Pt25  1  0.168  0.530  0.539  1.0
  Pt  Pt26  1  0.332  0.030  0.461  1.0
  Pt  Pt27  1  0.832  0.470  0.039  1.0
  Pt  Pt28  1  0.552  0.601  0.750  1.0
  Pt  Pt29  1  0.052  0.899  0.750  1.0
  Pt  Pt30  1  0.448  0.399  0.250  1.0
  Pt  Pt31  1  0.948  0.101  0.250  1.0
  Pt  Pt32  1  0.298  0.131  0.750  1.0
  Pt  Pt33  1  0.798  0.369  0.750  1.0
  Pt  Pt34  1  0.702  0.869  0.250  1.0
  Pt  Pt35  1  0.202  0.631  0.250  1.0
[/CIF]
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The material structure described by Sr5Pt4 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 6-coordinate geometry to one Pt(3), two equivalent Pt(2), and three equivalent Pt(1) atoms. In the second Sr site, Sr(2) is bonded to one Pt(2), two equivalent Pt(3), and four equivalent Pt(1) atoms to form distorted SrPt7 pentagonal bipyramids that share corners with four equivalent Sr(3)Pt6 octahedra, corners with six equivalent Sr(2)Pt7 pentagonal bipyramids, edges with two equivalent Sr(2)Pt7 pentagonal bipyramids, faces with two equivalent Sr(3)Pt6 octahedra, and faces with three equivalent Sr(2)Pt7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 46-54°. In the third Sr site, Sr(3) is bonded to two equivalent Pt(1), two equivalent Pt(2), and two equivalent Pt(3) atoms to form distorted SrPt6 octahedra that share corners with four equivalent Sr(3)Pt6 octahedra, corners with eight equivalent Sr(2)Pt7 pentagonal bipyramids, and faces with four equivalent Sr(2)Pt7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 55°. There are three inequivalent Pt sites. In the first Pt site, Pt(3) is bonded in a 9-coordinate geometry to two equivalent Sr(1), two equivalent Sr(3), four equivalent Sr(2), and one Pt(2) atom. In the second Pt site, Pt(1) is bonded in a 9-coordinate geometry to one Sr(3), three equivalent Sr(1), four equivalent Sr(2), and one Pt(1) atom. In the third Pt site, Pt(2) is bonded in a 9-coordinate geometry to two equivalent Sr(2), two equivalent Sr(3), four equivalent Sr(1), and one Pt(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr5Pt4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.896
_cell_length_b   8.223
_cell_length_c   15.734
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1021.695
_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  0.343  0.828  0.879  1.0
  Sr  Sr1  1  0.843  0.672  0.621  1.0
  Sr  Sr2  1  0.657  0.172  0.379  1.0
  Sr  Sr3  1  0.157  0.328  0.121  1.0
  Sr  Sr4  1  0.657  0.172  0.121  1.0
  Sr  Sr5  1  0.157  0.328  0.379  1.0
  Sr  Sr6  1  0.343  0.828  0.621  1.0
  Sr  Sr7  1  0.843  0.672  0.879  1.0
  Sr  Sr8  1  0.499  0.319  0.905  1.0
  Sr  Sr9  1  0.999  0.181  0.595  1.0
  Sr  Sr10  1  0.501  0.681  0.405  1.0
  Sr  Sr11  1  0.001  0.819  0.095  1.0
  Sr  Sr12  1  0.501  0.681  0.095  1.0
  Sr  Sr13  1  0.001  0.819  0.405  1.0
  Sr  Sr14  1  0.499  0.319  0.595  1.0
  Sr  Sr15  1  0.999  0.181  0.905  1.0
  Sr  Sr16  1  0.184  0.487  0.750  1.0
  Sr  Sr17  1  0.684  0.013  0.750  1.0
  Sr  Sr18  1  0.816  0.513  0.250  1.0
  Sr  Sr19  1  0.316  0.987  0.250  1.0
  Pt  Pt20  1  0.332  0.030  0.039  1.0
  Pt  Pt21  1  0.832  0.470  0.461  1.0
  Pt  Pt22  1  0.668  0.970  0.539  1.0
  Pt  Pt23  1  0.168  0.530  0.961  1.0
  Pt  Pt24  1  0.668  0.970  0.961  1.0
  Pt  Pt25  1  0.168  0.530  0.539  1.0
  Pt  Pt26  1  0.332  0.030  0.461  1.0
  Pt  Pt27  1  0.832  0.470  0.039  1.0
  Pt  Pt28  1  0.552  0.601  0.750  1.0
  Pt  Pt29  1  0.052  0.899  0.750  1.0
  Pt  Pt30  1  0.448  0.399  0.250  1.0
  Pt  Pt31  1  0.948  0.101  0.250  1.0
  Pt  Pt32  1  0.298  0.131  0.750  1.0
  Pt  Pt33  1  0.798  0.369  0.750  1.0
  Pt  Pt34  1  0.702  0.869  0.250  1.0
  Pt  Pt35  1  0.202  0.631  0.250  1.0
[/CIF]
.