The compound described by Sr11Sb10 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one Sb(1), one Sb(2), one Sb(4), and four equivalent Sb(5) atoms to form a mixture of distorted face, corner, and edge-sharing SrSb7 pentagonal bipyramids. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one Sb(3), two equivalent Sb(1), two equivalent Sb(2), and two equivalent Sb(5) atoms. In the third Sr site, Sr(3) is bonded in a 8-coordinate geometry to four equivalent Sb(3) and four equivalent Sb(5) atoms. In the fourth Sr site, Sr(4) is bonded in a 7-coordinate geometry to one Sb(4), two equivalent Sb(1), two equivalent Sb(3), and two equivalent Sb(5) atoms. There are five inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), and four equivalent Sr(4) atoms. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent Sr(2) atoms. In the third Sb site, Sb(3) is bonded in a 9-coordinate geometry to one Sr(2), two equivalent Sr(3), four equivalent Sr(4), and two equivalent Sb(3) atoms. In the fourth Sb site, Sb(4) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent Sr(4) atoms. In the fifth Sb site, Sb(5) is bonded in a 9-coordinate geometry to one Sr(2), one Sr(3), two equivalent Sr(4), four equivalent Sr(1), and one Sb(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr11Sb10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.822
_cell_length_b   12.822
_cell_length_c   12.822
_cell_angle_alpha   121.311
_cell_angle_beta   121.311
_cell_angle_gamma   87.744
_symmetry_Int_Tables_number   1
_cell_volume   1459.858
_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  0.810  0.061  0.250  1.0
  Sr  Sr1  1  0.810  0.560  0.750  1.0
  Sr  Sr2  1  0.061  0.810  0.250  1.0
  Sr  Sr3  1  0.560  0.810  0.750  1.0
  Sr  Sr4  1  0.190  0.939  0.750  1.0
  Sr  Sr5  1  0.190  0.440  0.250  1.0
  Sr  Sr6  1  0.939  0.190  0.750  1.0
  Sr  Sr7  1  0.440  0.190  0.250  1.0
  Sr  Sr8  1  0.169  0.169  0.338  1.0
  Sr  Sr9  1  0.831  0.831  0.662  1.0
  Sr  Sr10  1  0.169  0.831  0.000  1.0
  Sr  Sr11  1  0.831  0.169  0.000  1.0
  Sr  Sr12  1  0.655  0.655  0.000  1.0
  Sr  Sr13  1  0.345  0.345  0.000  1.0
  Sr  Sr14  1  0.605  0.940  0.335  1.0
  Sr  Sr15  1  0.605  0.270  0.665  1.0
  Sr  Sr16  1  0.940  0.605  0.335  1.0
  Sr  Sr17  1  0.270  0.605  0.665  1.0
  Sr  Sr18  1  0.395  0.060  0.665  1.0
  Sr  Sr19  1  0.395  0.730  0.335  1.0
  Sr  Sr20  1  0.060  0.395  0.665  1.0
  Sr  Sr21  1  0.730  0.395  0.335  1.0
  Sb  Sb22  1  0.354  0.000  0.354  1.0
  Sb  Sb23  1  0.646  0.000  0.646  1.0
  Sb  Sb24  1  0.000  0.646  0.646  1.0
  Sb  Sb25  1  0.000  0.354  0.354  1.0
  Sb  Sb26  1  0.878  0.878  0.000  1.0
  Sb  Sb27  1  0.122  0.122  0.000  1.0
  Sb  Sb28  1  0.379  0.379  0.758  1.0
  Sb  Sb29  1  0.621  0.621  0.242  1.0
  Sb  Sb30  1  0.379  0.621  0.000  1.0
  Sb  Sb31  1  0.621  0.379  0.000  1.0
  Sb  Sb32  1  0.750  0.250  0.500  1.0
  Sb  Sb33  1  0.250  0.750  0.500  1.0
  Sb  Sb34  1  0.889  0.889  0.419  1.0
  Sb  Sb35  1  0.470  0.470  0.581  1.0
  Sb  Sb36  1  0.889  0.470  0.000  1.0
  Sb  Sb37  1  0.470  0.889  0.000  1.0
  Sb  Sb38  1  0.111  0.111  0.581  1.0
  Sb  Sb39  1  0.530  0.530  0.419  1.0
  Sb  Sb40  1  0.111  0.530  0.000  1.0
  Sb  Sb41  1  0.530  0.111  0.000  1.0
[/CIF]
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The compound described by Sr11Sb10 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one Sb(1), one Sb(2), one Sb(4), and four equivalent Sb(5) atoms to form a mixture of distorted face, corner, and edge-sharing SrSb7 pentagonal bipyramids. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one Sb(3), two equivalent Sb(1), two equivalent Sb(2), and two equivalent Sb(5) atoms. In the third Sr site, Sr(3) is bonded in a 8-coordinate geometry to four equivalent Sb(3) and four equivalent Sb(5) atoms. In the fourth Sr site, Sr(4) is bonded in a 7-coordinate geometry to one Sb(4), two equivalent Sb(1), two equivalent Sb(3), and two equivalent Sb(5) atoms. There are five inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), and four equivalent Sr(4) atoms. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent Sr(2) atoms. In the third Sb site, Sb(3) is bonded in a 9-coordinate geometry to one Sr(2), two equivalent Sr(3), four equivalent Sr(4), and two equivalent Sb(3) atoms. In the fourth Sb site, Sb(4) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent Sr(4) atoms. In the fifth Sb site, Sb(5) is bonded in a 9-coordinate geometry to one Sr(2), one Sr(3), two equivalent Sr(4), four equivalent Sr(1), and one Sb(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr11Sb10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.822
_cell_length_b   12.822
_cell_length_c   12.822
_cell_angle_alpha   121.311
_cell_angle_beta   121.311
_cell_angle_gamma   87.744
_symmetry_Int_Tables_number   1
_cell_volume   1459.858
_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  0.810  0.061  0.250  1.0
  Sr  Sr1  1  0.810  0.560  0.750  1.0
  Sr  Sr2  1  0.061  0.810  0.250  1.0
  Sr  Sr3  1  0.560  0.810  0.750  1.0
  Sr  Sr4  1  0.190  0.939  0.750  1.0
  Sr  Sr5  1  0.190  0.440  0.250  1.0
  Sr  Sr6  1  0.939  0.190  0.750  1.0
  Sr  Sr7  1  0.440  0.190  0.250  1.0
  Sr  Sr8  1  0.169  0.169  0.338  1.0
  Sr  Sr9  1  0.831  0.831  0.662  1.0
  Sr  Sr10  1  0.169  0.831  0.000  1.0
  Sr  Sr11  1  0.831  0.169  0.000  1.0
  Sr  Sr12  1  0.655  0.655  0.000  1.0
  Sr  Sr13  1  0.345  0.345  0.000  1.0
  Sr  Sr14  1  0.605  0.940  0.335  1.0
  Sr  Sr15  1  0.605  0.270  0.665  1.0
  Sr  Sr16  1  0.940  0.605  0.335  1.0
  Sr  Sr17  1  0.270  0.605  0.665  1.0
  Sr  Sr18  1  0.395  0.060  0.665  1.0
  Sr  Sr19  1  0.395  0.730  0.335  1.0
  Sr  Sr20  1  0.060  0.395  0.665  1.0
  Sr  Sr21  1  0.730  0.395  0.335  1.0
  Sb  Sb22  1  0.354  0.000  0.354  1.0
  Sb  Sb23  1  0.646  0.000  0.646  1.0
  Sb  Sb24  1  0.000  0.646  0.646  1.0
  Sb  Sb25  1  0.000  0.354  0.354  1.0
  Sb  Sb26  1  0.878  0.878  0.000  1.0
  Sb  Sb27  1  0.122  0.122  0.000  1.0
  Sb  Sb28  1  0.379  0.379  0.758  1.0
  Sb  Sb29  1  0.621  0.621  0.242  1.0
  Sb  Sb30  1  0.379  0.621  0.000  1.0
  Sb  Sb31  1  0.621  0.379  0.000  1.0
  Sb  Sb32  1  0.750  0.250  0.500  1.0
  Sb  Sb33  1  0.250  0.750  0.500  1.0
  Sb  Sb34  1  0.889  0.889  0.419  1.0
  Sb  Sb35  1  0.470  0.470  0.581  1.0
  Sb  Sb36  1  0.889  0.470  0.000  1.0
  Sb  Sb37  1  0.470  0.889  0.000  1.0
  Sb  Sb38  1  0.111  0.111  0.581  1.0
  Sb  Sb39  1  0.530  0.530  0.419  1.0
  Sb  Sb40  1  0.111  0.530  0.000  1.0
  Sb  Sb41  1  0.530  0.111  0.000  1.0
[/CIF]
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