The material structure described by Sr5Sb2As crystallizes in the orthorhombic Pnma space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to four equivalent Sb(1) and one As(1) atom to form a mixture of distorted edge, corner, and face-sharing SrSb4As square pyramids. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to four equivalent Sb(1) and one As(1) atom. In the third Sr site, Sr(3) is bonded in a 5-coordinate geometry to three equivalent Sb(1) and two equivalent As(1) atoms. In the fourth Sr site, Sr(4) is bonded to four equivalent Sb(1) and one As(1) atom to form a mixture of distorted edge, corner, and face-sharing SrSb4As trigonal bipyramids. Sb(1) is bonded in a 9-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), two equivalent Sr(4), and three equivalent Sr(3) atoms. As(1) is bonded to one Sr(1), one Sr(2), one Sr(4), and four equivalent Sr(3) atoms to form distorted edge-sharing AsSr7 pentagonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr5Sb2As
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.685
_cell_length_b   9.921
_cell_length_c   13.298
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1145.723
_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  0.044  0.750  0.502  1.0
  Sr  Sr1  1  0.956  0.250  0.498  1.0
  Sr  Sr2  1  0.544  0.250  0.998  1.0
  Sr  Sr3  1  0.456  0.750  0.002  1.0
  Sr  Sr4  1  0.860  0.750  0.798  1.0
  Sr  Sr5  1  0.140  0.250  0.202  1.0
  Sr  Sr6  1  0.360  0.250  0.702  1.0
  Sr  Sr7  1  0.640  0.750  0.298  1.0
  Sr  Sr8  1  0.686  0.536  0.576  1.0
  Sr  Sr9  1  0.314  0.464  0.424  1.0
  Sr  Sr10  1  0.186  0.464  0.924  1.0
  Sr  Sr11  1  0.314  0.036  0.424  1.0
  Sr  Sr12  1  0.814  0.536  0.076  1.0
  Sr  Sr13  1  0.686  0.964  0.576  1.0
  Sr  Sr14  1  0.814  0.964  0.076  1.0
  Sr  Sr15  1  0.186  0.036  0.924  1.0
  Sr  Sr16  1  0.335  0.750  0.715  1.0
  Sr  Sr17  1  0.665  0.250  0.285  1.0
  Sr  Sr18  1  0.835  0.250  0.785  1.0
  Sr  Sr19  1  0.165  0.750  0.215  1.0
  Sb  Sb20  1  0.566  0.510  0.829  1.0
  Sb  Sb21  1  0.434  0.490  0.171  1.0
  Sb  Sb22  1  0.066  0.490  0.671  1.0
  Sb  Sb23  1  0.434  0.010  0.171  1.0
  Sb  Sb24  1  0.934  0.510  0.329  1.0
  Sb  Sb25  1  0.566  0.990  0.829  1.0
  Sb  Sb26  1  0.934  0.990  0.329  1.0
  Sb  Sb27  1  0.066  0.010  0.671  1.0
  As  As28  1  0.074  0.750  0.986  1.0
  As  As29  1  0.926  0.250  0.014  1.0
  As  As30  1  0.574  0.250  0.514  1.0
  As  As31  1  0.426  0.750  0.486  1.0
[/CIF]
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The material structure described by Sr5Sb2As crystallizes in the orthorhombic Pnma space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to four equivalent Sb(1) and one As(1) atom to form a mixture of distorted edge, corner, and face-sharing SrSb4As square pyramids. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to four equivalent Sb(1) and one As(1) atom. In the third Sr site, Sr(3) is bonded in a 5-coordinate geometry to three equivalent Sb(1) and two equivalent As(1) atoms. In the fourth Sr site, Sr(4) is bonded to four equivalent Sb(1) and one As(1) atom to form a mixture of distorted edge, corner, and face-sharing SrSb4As trigonal bipyramids. Sb(1) is bonded in a 9-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), two equivalent Sr(4), and three equivalent Sr(3) atoms. As(1) is bonded to one Sr(1), one Sr(2), one Sr(4), and four equivalent Sr(3) atoms to form distorted edge-sharing AsSr7 pentagonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr5Sb2As
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.685
_cell_length_b   9.921
_cell_length_c   13.298
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1145.723
_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  0.044  0.750  0.502  1.0
  Sr  Sr1  1  0.956  0.250  0.498  1.0
  Sr  Sr2  1  0.544  0.250  0.998  1.0
  Sr  Sr3  1  0.456  0.750  0.002  1.0
  Sr  Sr4  1  0.860  0.750  0.798  1.0
  Sr  Sr5  1  0.140  0.250  0.202  1.0
  Sr  Sr6  1  0.360  0.250  0.702  1.0
  Sr  Sr7  1  0.640  0.750  0.298  1.0
  Sr  Sr8  1  0.686  0.536  0.576  1.0
  Sr  Sr9  1  0.314  0.464  0.424  1.0
  Sr  Sr10  1  0.186  0.464  0.924  1.0
  Sr  Sr11  1  0.314  0.036  0.424  1.0
  Sr  Sr12  1  0.814  0.536  0.076  1.0
  Sr  Sr13  1  0.686  0.964  0.576  1.0
  Sr  Sr14  1  0.814  0.964  0.076  1.0
  Sr  Sr15  1  0.186  0.036  0.924  1.0
  Sr  Sr16  1  0.335  0.750  0.715  1.0
  Sr  Sr17  1  0.665  0.250  0.285  1.0
  Sr  Sr18  1  0.835  0.250  0.785  1.0
  Sr  Sr19  1  0.165  0.750  0.215  1.0
  Sb  Sb20  1  0.566  0.510  0.829  1.0
  Sb  Sb21  1  0.434  0.490  0.171  1.0
  Sb  Sb22  1  0.066  0.490  0.671  1.0
  Sb  Sb23  1  0.434  0.010  0.171  1.0
  Sb  Sb24  1  0.934  0.510  0.329  1.0
  Sb  Sb25  1  0.566  0.990  0.829  1.0
  Sb  Sb26  1  0.934  0.990  0.329  1.0
  Sb  Sb27  1  0.066  0.010  0.671  1.0
  As  As28  1  0.074  0.750  0.986  1.0
  As  As29  1  0.926  0.250  0.014  1.0
  As  As30  1  0.574  0.250  0.514  1.0
  As  As31  1  0.426  0.750  0.486  1.0
[/CIF]
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