The material structure described by Sr2Sb3 is Magnesium tetraboride-like structured and crystallizes in the monoclinic P2_1/c 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(3), two equivalent Sb(5), and three equivalent Sb(6) atoms to form a mixture of distorted corner, edge, and face-sharing SrSb8 hexagonal bipyramids. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one Sb(2), one Sb(3), one Sb(6), two equivalent Sb(4), and three equivalent Sb(1) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one Sb(1), one Sb(3), one Sb(6), two equivalent Sb(2), two equivalent Sb(4), and two equivalent Sb(5) atoms. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one Sb(1), one Sb(4), one Sb(6), two equivalent Sb(2), two equivalent Sb(3), and two equivalent Sb(5) atoms. There are six inequivalent Sb sites. In the first Sb site, Sb(5) is bonded in a 8-coordinate geometry to two equivalent Sr(1), two equivalent Sr(3), two equivalent Sr(4), one Sb(4), and one Sb(6) atom. In the second Sb site, Sb(6) is bonded in a 7-coordinate geometry to one Sr(2), one Sr(3), one Sr(4), three equivalent Sr(1), and one Sb(5) atom. In the third Sb site, Sb(1) is bonded in a 7-coordinate geometry to one Sr(1), one Sr(3), one Sr(4), three equivalent Sr(2), and one Sb(2) atom. In the fourth Sb site, Sb(2) is bonded in a 8-coordinate geometry to one Sr(1), one Sr(2), two equivalent Sr(3), two equivalent Sr(4), one Sb(1), and one Sb(3) atom. In the fifth Sb site, Sb(3) is bonded in a 7-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), two equivalent Sr(4), one Sb(2), and one Sb(4) atom. In the sixth Sb site, Sb(4) is bonded in a 7-coordinate geometry to one Sr(4), two equivalent Sr(2), two equivalent Sr(3), one Sb(3), and one Sb(5) atom. is represented by the CIF file [CIF]
data_Sr2Sb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.734
_cell_length_b   13.092
_cell_length_c   15.371
_cell_angle_alpha   90.000
_cell_angle_beta   90.120
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1355.122
_cell_formula_units_Z   8
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  0.746  0.124  0.996  1.0
  Sr  Sr1  1  0.254  0.624  0.504  1.0
  Sr  Sr2  1  0.254  0.876  0.004  1.0
  Sr  Sr3  1  0.746  0.376  0.496  1.0
  Sr  Sr4  1  0.247  0.127  0.494  1.0
  Sr  Sr5  1  0.753  0.627  0.006  1.0
  Sr  Sr6  1  0.753  0.873  0.506  1.0
  Sr  Sr7  1  0.247  0.373  0.994  1.0
  Sr  Sr8  1  0.009  0.278  0.243  1.0
  Sr  Sr9  1  0.991  0.778  0.257  1.0
  Sr  Sr10  1  0.991  0.722  0.757  1.0
  Sr  Sr11  1  0.009  0.222  0.743  1.0
  Sr  Sr12  1  0.510  0.472  0.253  1.0
  Sr  Sr13  1  0.490  0.972  0.247  1.0
  Sr  Sr14  1  0.490  0.528  0.747  1.0
  Sr  Sr15  1  0.510  0.028  0.753  1.0
  Sb  Sb16  1  0.735  0.368  0.073  1.0
  Sb  Sb17  1  0.265  0.868  0.427  1.0
  Sb  Sb18  1  0.265  0.632  0.927  1.0
  Sb  Sb19  1  0.735  0.132  0.573  1.0
  Sb  Sb20  1  0.469  0.223  0.160  1.0
  Sb  Sb21  1  0.531  0.723  0.340  1.0
  Sb  Sb22  1  0.531  0.777  0.840  1.0
  Sb  Sb23  1  0.469  0.277  0.660  1.0
  Sb  Sb24  1  0.583  0.204  0.341  1.0
  Sb  Sb25  1  0.417  0.704  0.159  1.0
  Sb  Sb26  1  0.417  0.796  0.659  1.0
  Sb  Sb27  1  0.583  0.296  0.841  1.0
  Sb  Sb28  1  0.911  0.047  0.345  1.0
  Sb  Sb29  1  0.089  0.547  0.155  1.0
  Sb  Sb30  1  0.089  0.953  0.655  1.0
  Sb  Sb31  1  0.911  0.453  0.845  1.0
  Sb  Sb32  1  0.029  0.030  0.164  1.0
  Sb  Sb33  1  0.971  0.530  0.336  1.0
  Sb  Sb34  1  0.971  0.970  0.836  1.0
  Sb  Sb35  1  0.029  0.470  0.664  1.0
  Sb  Sb36  1  0.233  0.385  0.422  1.0
  Sb  Sb37  1  0.767  0.885  0.078  1.0
  Sb  Sb38  1  0.767  0.615  0.578  1.0
  Sb  Sb39  1  0.233  0.115  0.922  1.0
[/CIF]
.
The material structure described by Sr2Sb3 is Magnesium tetraboride-like structured and crystallizes in the monoclinic P2_1/c 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(3), two equivalent Sb(5), and three equivalent Sb(6) atoms to form a mixture of distorted corner, edge, and face-sharing SrSb8 hexagonal bipyramids. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one Sb(2), one Sb(3), one Sb(6), two equivalent Sb(4), and three equivalent Sb(1) atoms. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one Sb(1), one Sb(3), one Sb(6), two equivalent Sb(2), two equivalent Sb(4), and two equivalent Sb(5) atoms. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one Sb(1), one Sb(4), one Sb(6), two equivalent Sb(2), two equivalent Sb(3), and two equivalent Sb(5) atoms. There are six inequivalent Sb sites. In the first Sb site, Sb(5) is bonded in a 8-coordinate geometry to two equivalent Sr(1), two equivalent Sr(3), two equivalent Sr(4), one Sb(4), and one Sb(6) atom. In the second Sb site, Sb(6) is bonded in a 7-coordinate geometry to one Sr(2), one Sr(3), one Sr(4), three equivalent Sr(1), and one Sb(5) atom. In the third Sb site, Sb(1) is bonded in a 7-coordinate geometry to one Sr(1), one Sr(3), one Sr(4), three equivalent Sr(2), and one Sb(2) atom. In the fourth Sb site, Sb(2) is bonded in a 8-coordinate geometry to one Sr(1), one Sr(2), two equivalent Sr(3), two equivalent Sr(4), one Sb(1), and one Sb(3) atom. In the fifth Sb site, Sb(3) is bonded in a 7-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), two equivalent Sr(4), one Sb(2), and one Sb(4) atom. In the sixth Sb site, Sb(4) is bonded in a 7-coordinate geometry to one Sr(4), two equivalent Sr(2), two equivalent Sr(3), one Sb(3), and one Sb(5) atom. is represented by the CIF file [CIF]
data_Sr2Sb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.734
_cell_length_b   13.092
_cell_length_c   15.371
_cell_angle_alpha   90.000
_cell_angle_beta   90.120
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1355.122
_cell_formula_units_Z   8
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  0.746  0.124  0.996  1.0
  Sr  Sr1  1  0.254  0.624  0.504  1.0
  Sr  Sr2  1  0.254  0.876  0.004  1.0
  Sr  Sr3  1  0.746  0.376  0.496  1.0
  Sr  Sr4  1  0.247  0.127  0.494  1.0
  Sr  Sr5  1  0.753  0.627  0.006  1.0
  Sr  Sr6  1  0.753  0.873  0.506  1.0
  Sr  Sr7  1  0.247  0.373  0.994  1.0
  Sr  Sr8  1  0.009  0.278  0.243  1.0
  Sr  Sr9  1  0.991  0.778  0.257  1.0
  Sr  Sr10  1  0.991  0.722  0.757  1.0
  Sr  Sr11  1  0.009  0.222  0.743  1.0
  Sr  Sr12  1  0.510  0.472  0.253  1.0
  Sr  Sr13  1  0.490  0.972  0.247  1.0
  Sr  Sr14  1  0.490  0.528  0.747  1.0
  Sr  Sr15  1  0.510  0.028  0.753  1.0
  Sb  Sb16  1  0.735  0.368  0.073  1.0
  Sb  Sb17  1  0.265  0.868  0.427  1.0
  Sb  Sb18  1  0.265  0.632  0.927  1.0
  Sb  Sb19  1  0.735  0.132  0.573  1.0
  Sb  Sb20  1  0.469  0.223  0.160  1.0
  Sb  Sb21  1  0.531  0.723  0.340  1.0
  Sb  Sb22  1  0.531  0.777  0.840  1.0
  Sb  Sb23  1  0.469  0.277  0.660  1.0
  Sb  Sb24  1  0.583  0.204  0.341  1.0
  Sb  Sb25  1  0.417  0.704  0.159  1.0
  Sb  Sb26  1  0.417  0.796  0.659  1.0
  Sb  Sb27  1  0.583  0.296  0.841  1.0
  Sb  Sb28  1  0.911  0.047  0.345  1.0
  Sb  Sb29  1  0.089  0.547  0.155  1.0
  Sb  Sb30  1  0.089  0.953  0.655  1.0
  Sb  Sb31  1  0.911  0.453  0.845  1.0
  Sb  Sb32  1  0.029  0.030  0.164  1.0
  Sb  Sb33  1  0.971  0.530  0.336  1.0
  Sb  Sb34  1  0.971  0.970  0.836  1.0
  Sb  Sb35  1  0.029  0.470  0.664  1.0
  Sb  Sb36  1  0.233  0.385  0.422  1.0
  Sb  Sb37  1  0.767  0.885  0.078  1.0
  Sb  Sb38  1  0.767  0.615  0.578  1.0
  Sb  Sb39  1  0.233  0.115  0.922  1.0
[/CIF]
.