The structure described by Sr5Bi3 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 4-coordinate geometry to two equivalent Bi(1) and three equivalent Bi(2) atoms. In the second Sr site, Sr(2) is bonded to one Bi(1) and four equivalent Bi(2) atoms to form a mixture of distorted face, corner, and edge-sharing SrBi5 square pyramids. In the third Sr site, Sr(3) is bonded to one Bi(1) and four equivalent Bi(2) atoms to form a mixture of distorted face, corner, and edge-sharing SrBi5 square pyramids. In the fourth Sr site, Sr(4) is bonded in a 5-coordinate geometry to one Bi(1) and four equivalent Bi(2) atoms. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one Sr(2), one Sr(3), one Sr(4), and four equivalent Sr(1) atoms to form distorted edge-sharing BiSr7 pentagonal bipyramids. In the second Bi site, Bi(2) is bonded in a 9-coordinate geometry to two equivalent Sr(2), two equivalent Sr(3), two equivalent Sr(4), and three equivalent Sr(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr5Bi3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.949
_cell_length_b   10.270
_cell_length_c   13.610
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1250.969
_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  0.692  0.960  0.422  1.0
  Sr  Sr1  1  0.808  0.540  0.922  1.0
  Sr  Sr2  1  0.308  0.460  0.578  1.0
  Sr  Sr3  1  0.192  0.040  0.078  1.0
  Sr  Sr4  1  0.308  0.040  0.578  1.0
  Sr  Sr5  1  0.192  0.460  0.078  1.0
  Sr  Sr6  1  0.692  0.540  0.422  1.0
  Sr  Sr7  1  0.808  0.960  0.922  1.0
  Sr  Sr8  1  0.322  0.750  0.275  1.0
  Sr  Sr9  1  0.178  0.750  0.775  1.0
  Sr  Sr10  1  0.678  0.250  0.725  1.0
  Sr  Sr11  1  0.822  0.250  0.225  1.0
  Sr  Sr12  1  0.036  0.750  0.495  1.0
  Sr  Sr13  1  0.464  0.750  0.995  1.0
  Sr  Sr14  1  0.964  0.250  0.505  1.0
  Sr  Sr15  1  0.536  0.250  0.005  1.0
  Sr  Sr16  1  0.848  0.750  0.207  1.0
  Sr  Sr17  1  0.652  0.750  0.707  1.0
  Sr  Sr18  1  0.152  0.250  0.793  1.0
  Sr  Sr19  1  0.348  0.250  0.293  1.0
  Bi  Bi20  1  0.076  0.750  0.015  1.0
  Bi  Bi21  1  0.424  0.750  0.515  1.0
  Bi  Bi22  1  0.924  0.250  0.985  1.0
  Bi  Bi23  1  0.576  0.250  0.485  1.0
  Bi  Bi24  1  0.563  0.988  0.171  1.0
  Bi  Bi25  1  0.937  0.512  0.671  1.0
  Bi  Bi26  1  0.437  0.488  0.829  1.0
  Bi  Bi27  1  0.063  0.012  0.329  1.0
  Bi  Bi28  1  0.437  0.012  0.829  1.0
  Bi  Bi29  1  0.063  0.488  0.329  1.0
  Bi  Bi30  1  0.563  0.512  0.171  1.0
  Bi  Bi31  1  0.937  0.988  0.671  1.0
[/CIF]
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The structure described by Sr5Bi3 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 4-coordinate geometry to two equivalent Bi(1) and three equivalent Bi(2) atoms. In the second Sr site, Sr(2) is bonded to one Bi(1) and four equivalent Bi(2) atoms to form a mixture of distorted face, corner, and edge-sharing SrBi5 square pyramids. In the third Sr site, Sr(3) is bonded to one Bi(1) and four equivalent Bi(2) atoms to form a mixture of distorted face, corner, and edge-sharing SrBi5 square pyramids. In the fourth Sr site, Sr(4) is bonded in a 5-coordinate geometry to one Bi(1) and four equivalent Bi(2) atoms. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one Sr(2), one Sr(3), one Sr(4), and four equivalent Sr(1) atoms to form distorted edge-sharing BiSr7 pentagonal bipyramids. In the second Bi site, Bi(2) is bonded in a 9-coordinate geometry to two equivalent Sr(2), two equivalent Sr(3), two equivalent Sr(4), and three equivalent Sr(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr5Bi3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.949
_cell_length_b   10.270
_cell_length_c   13.610
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1250.969
_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  0.692  0.960  0.422  1.0
  Sr  Sr1  1  0.808  0.540  0.922  1.0
  Sr  Sr2  1  0.308  0.460  0.578  1.0
  Sr  Sr3  1  0.192  0.040  0.078  1.0
  Sr  Sr4  1  0.308  0.040  0.578  1.0
  Sr  Sr5  1  0.192  0.460  0.078  1.0
  Sr  Sr6  1  0.692  0.540  0.422  1.0
  Sr  Sr7  1  0.808  0.960  0.922  1.0
  Sr  Sr8  1  0.322  0.750  0.275  1.0
  Sr  Sr9  1  0.178  0.750  0.775  1.0
  Sr  Sr10  1  0.678  0.250  0.725  1.0
  Sr  Sr11  1  0.822  0.250  0.225  1.0
  Sr  Sr12  1  0.036  0.750  0.495  1.0
  Sr  Sr13  1  0.464  0.750  0.995  1.0
  Sr  Sr14  1  0.964  0.250  0.505  1.0
  Sr  Sr15  1  0.536  0.250  0.005  1.0
  Sr  Sr16  1  0.848  0.750  0.207  1.0
  Sr  Sr17  1  0.652  0.750  0.707  1.0
  Sr  Sr18  1  0.152  0.250  0.793  1.0
  Sr  Sr19  1  0.348  0.250  0.293  1.0
  Bi  Bi20  1  0.076  0.750  0.015  1.0
  Bi  Bi21  1  0.424  0.750  0.515  1.0
  Bi  Bi22  1  0.924  0.250  0.985  1.0
  Bi  Bi23  1  0.576  0.250  0.485  1.0
  Bi  Bi24  1  0.563  0.988  0.171  1.0
  Bi  Bi25  1  0.937  0.512  0.671  1.0
  Bi  Bi26  1  0.437  0.488  0.829  1.0
  Bi  Bi27  1  0.063  0.012  0.329  1.0
  Bi  Bi28  1  0.437  0.012  0.829  1.0
  Bi  Bi29  1  0.063  0.488  0.329  1.0
  Bi  Bi30  1  0.563  0.512  0.171  1.0
  Bi  Bi31  1  0.937  0.988  0.671  1.0
[/CIF]
.