The crystal structure described by Sr4Bi11 crystallizes in the triclinic P-1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one Bi(1), one Bi(3), one Bi(4), one Bi(6), two equivalent Bi(2), and two equivalent Bi(5) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one Bi(4), one Bi(5), one Bi(6), two equivalent Bi(1), and two equivalent Bi(3) atoms. There are six inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to one Sr(1), two equivalent Sr(2), one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to two equivalent Sr(1), one Bi(1), one Bi(4), one Bi(5), and one Bi(6) atom. In the third Bi site, Bi(3) is bonded in a 3-coordinate geometry to one Sr(1), two equivalent Sr(2), and one Bi(1) atom. In the fourth Bi site, Bi(4) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), one Bi(1), and one Bi(2) atom. In the fifth Bi site, Bi(5) is bonded in a 1-coordinate geometry to one Sr(2), two equivalent Sr(1), and one Bi(2) atom. In the sixth Bi site, Bi(6) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Bi(2) atoms. is represented by the CIF card [CIF]
data_Sr4Bi11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.469
_cell_length_b   9.289
_cell_length_c   9.684
_cell_angle_alpha   62.094
_cell_angle_beta   71.704
_cell_angle_gamma   79.795
_symmetry_Int_Tables_number   1
_cell_volume   563.363
_cell_formula_units_Z   1
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  0.651  0.058  0.793  1.0
  Sr  Sr1  1  0.227  0.910  0.671  1.0
  Sr  Sr2  1  0.773  0.090  0.329  1.0
  Sr  Sr3  1  0.349  0.942  0.207  1.0
  Bi  Bi4  1  0.428  0.330  0.499  1.0
  Bi  Bi5  1  0.278  0.328  0.865  1.0
  Bi  Bi6  1  0.221  0.265  0.292  1.0
  Bi  Bi7  1  0.991  0.325  0.646  1.0
  Bi  Bi8  1  0.614  0.335  0.988  1.0
  Bi  Bi9  1  0.779  0.735  0.708  1.0
  Bi  Bi10  1  0.722  0.672  0.135  1.0
  Bi  Bi11  1  0.572  0.670  0.501  1.0
  Bi  Bi12  1  0.386  0.665  0.012  1.0
  Bi  Bi13  1  0.009  0.675  0.354  1.0
  Bi  Bi14  1  0.000  0.000  0.000  1.0
[/CIF]
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The crystal structure described by Sr4Bi11 crystallizes in the triclinic P-1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one Bi(1), one Bi(3), one Bi(4), one Bi(6), two equivalent Bi(2), and two equivalent Bi(5) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one Bi(4), one Bi(5), one Bi(6), two equivalent Bi(1), and two equivalent Bi(3) atoms. There are six inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to one Sr(1), two equivalent Sr(2), one Bi(1), one Bi(2), one Bi(3), and one Bi(4) atom. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to two equivalent Sr(1), one Bi(1), one Bi(4), one Bi(5), and one Bi(6) atom. In the third Bi site, Bi(3) is bonded in a 3-coordinate geometry to one Sr(1), two equivalent Sr(2), and one Bi(1) atom. In the fourth Bi site, Bi(4) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), one Bi(1), and one Bi(2) atom. In the fifth Bi site, Bi(5) is bonded in a 1-coordinate geometry to one Sr(2), two equivalent Sr(1), and one Bi(2) atom. In the sixth Bi site, Bi(6) is bonded in a 4-coordinate geometry to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Bi(2) atoms. is represented by the CIF card [CIF]
data_Sr4Bi11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.469
_cell_length_b   9.289
_cell_length_c   9.684
_cell_angle_alpha   62.094
_cell_angle_beta   71.704
_cell_angle_gamma   79.795
_symmetry_Int_Tables_number   1
_cell_volume   563.363
_cell_formula_units_Z   1
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  0.651  0.058  0.793  1.0
  Sr  Sr1  1  0.227  0.910  0.671  1.0
  Sr  Sr2  1  0.773  0.090  0.329  1.0
  Sr  Sr3  1  0.349  0.942  0.207  1.0
  Bi  Bi4  1  0.428  0.330  0.499  1.0
  Bi  Bi5  1  0.278  0.328  0.865  1.0
  Bi  Bi6  1  0.221  0.265  0.292  1.0
  Bi  Bi7  1  0.991  0.325  0.646  1.0
  Bi  Bi8  1  0.614  0.335  0.988  1.0
  Bi  Bi9  1  0.779  0.735  0.708  1.0
  Bi  Bi10  1  0.722  0.672  0.135  1.0
  Bi  Bi11  1  0.572  0.670  0.501  1.0
  Bi  Bi12  1  0.386  0.665  0.012  1.0
  Bi  Bi13  1  0.009  0.675  0.354  1.0
  Bi  Bi14  1  0.000  0.000  0.000  1.0
[/CIF]
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