The crystal structure described by BaSr2(SnO3)3 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic C2 space group. Ba(1) is bonded to one O(2), one O(3), one O(7), one O(8), two equivalent O(1), two equivalent O(4), two equivalent O(5), and two equivalent O(9) atoms to form distorted BaO12 cuboctahedra that share corners with nine equivalent Ba(1)O12 cuboctahedra,  a faceface with one Sn(3)O6 octahedra, faces with three equivalent Sn(2)O6 octahedra, and faces with four equivalent Sn(1)O6 octahedra. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to one O(10), two equivalent O(3), two equivalent O(6), and two equivalent O(8) atoms. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to one O(7), two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. In the third Sr site, Sr(3) is bonded in a 5-coordinate geometry to one O(10), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(4), one O(5), one O(7), one O(9), and two equivalent O(1) atoms to form SnO6 octahedra that share corners with three equivalent Sn(1)O6 octahedra, corners with three equivalent Sn(2)O6 octahedra, and faces with four equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 15-22°. In the second Sn site, Sn(2) is bonded to one O(2), one O(3), one O(4), one O(5), one O(8), and one O(9) atom to form SnO6 octahedra that share corners with three equivalent Sn(1)O6 octahedra, corners with three equivalent Sn(3)O6 octahedra, and faces with three equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 15-24°. In the third Sn site, Sn(3) is bonded to one O(10), one O(2), one O(3), one O(8), and two equivalent O(6) atoms to form SnO6 octahedra that share corners with three equivalent Sn(2)O6 octahedra, corners with three equivalent Sn(3)O6 octahedra, and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 17-25°. There are ten inequivalent O sites. In the first O site, O(6) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(3), and two equivalent Sn(3) atoms. In the second O site, O(7) is bonded in a 5-coordinate geometry to two equivalent Ba(1), one Sr(2), and two equivalent Sn(1) atoms. In the third O site, O(8) is bonded in a 5-coordinate geometry to one Ba(1), one Sr(1), one Sr(3), one Sn(2), and one Sn(3) atom. In the fourth O site, O(9) is bonded in a 3-coordinate geometry to two equivalent Ba(1), one Sn(1), and one Sn(2) atom. In the fifth O site, O(10) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Sr(3), and two equivalent Sn(3) atoms. In the sixth O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Sr(2), and two equivalent Sn(1) atoms. In the seventh O site, O(2) is bonded in a 4-coordinate geometry to one Ba(1), one Sr(3), one Sn(2), and one Sn(3) atom. In the eighth O site, O(3) is bonded in a 4-coordinate geometry to one Ba(1), one Sr(1), one Sr(3), one Sn(2), and one Sn(3) atom. In the ninth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Ba(1), one Sr(2), one Sr(3), one Sn(1), and one Sn(2) atom. In the tenth O site, O(5) is bonded in a 6-coordinate geometry to two equivalent Ba(1), one Sr(2), one Sr(3), one Sn(1), and one Sn(2) atom. is represented by the CIF card [CIF]
data_BaSr2(SnO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.840
_cell_length_b   5.840
_cell_length_c   14.285
_cell_angle_alpha   89.802
_cell_angle_beta   89.802
_cell_angle_gamma   60.397
_symmetry_Int_Tables_number   1
_cell_volume   423.615
_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
  Ba  Ba0  1  0.666  0.668  0.667  1.0
  Ba  Ba1  1  0.332  0.334  0.333  1.0
  Sr  Sr2  1  0.993  0.007  0.000  1.0
  Sr  Sr3  1  0.010  0.990  0.500  1.0
  Sr  Sr4  1  0.677  0.656  0.165  1.0
  Sr  Sr5  1  0.344  0.323  0.835  1.0
  Sn  Sn6  1  0.334  0.333  0.584  1.0
  Sn  Sn7  1  0.002  0.999  0.247  1.0
  Sn  Sn8  1  0.667  0.666  0.918  1.0
  Sn  Sn9  1  0.001  0.998  0.753  1.0
  Sn  Sn10  1  0.667  0.666  0.416  1.0
  Sn  Sn11  1  0.334  0.333  0.082  1.0
  O  O12  1  0.468  0.985  0.508  1.0
  O  O13  1  0.131  0.649  0.173  1.0
  O  O14  1  0.802  0.308  0.848  1.0
  O  O15  1  0.015  0.532  0.492  1.0
  O  O16  1  0.692  0.198  0.152  1.0
  O  O17  1  0.351  0.869  0.827  1.0
  O  O18  1  0.638  0.161  0.682  1.0
  O  O19  1  0.304  0.827  0.346  1.0
  O  O20  1  0.973  0.464  0.014  1.0
  O  O21  1  0.173  0.696  0.654  1.0
  O  O22  1  0.839  0.362  0.318  1.0
  O  O23  1  0.536  0.027  0.986  1.0
  O  O24  1  0.569  0.431  0.500  1.0
  O  O25  1  0.243  0.090  0.164  1.0
  O  O26  1  0.910  0.757  0.836  1.0
  O  O27  1  0.119  0.213  0.668  1.0
  O  O28  1  0.787  0.881  0.332  1.0
  O  O29  1  0.424  0.576  0.000  1.0
[/CIF]
.
The crystal structure described by BaSr2(SnO3)3 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic C2 space group. Ba(1) is bonded to one O(2), one O(3), one O(7), one O(8), two equivalent O(1), two equivalent O(4), two equivalent O(5), and two equivalent O(9) atoms to form distorted BaO12 cuboctahedra that share corners with nine equivalent Ba(1)O12 cuboctahedra,  a faceface with one Sn(3)O6 octahedra, faces with three equivalent Sn(2)O6 octahedra, and faces with four equivalent Sn(1)O6 octahedra. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to one O(10), two equivalent O(3), two equivalent O(6), and two equivalent O(8) atoms. In the second Sr site, Sr(2) is bonded in a 5-coordinate geometry to one O(7), two equivalent O(4), two equivalent O(5), and four equivalent O(1) atoms. In the third Sr site, Sr(3) is bonded in a 5-coordinate geometry to one O(10), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(4), one O(5), one O(7), one O(9), and two equivalent O(1) atoms to form SnO6 octahedra that share corners with three equivalent Sn(1)O6 octahedra, corners with three equivalent Sn(2)O6 octahedra, and faces with four equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 15-22°. In the second Sn site, Sn(2) is bonded to one O(2), one O(3), one O(4), one O(5), one O(8), and one O(9) atom to form SnO6 octahedra that share corners with three equivalent Sn(1)O6 octahedra, corners with three equivalent Sn(3)O6 octahedra, and faces with three equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 15-24°. In the third Sn site, Sn(3) is bonded to one O(10), one O(2), one O(3), one O(8), and two equivalent O(6) atoms to form SnO6 octahedra that share corners with three equivalent Sn(2)O6 octahedra, corners with three equivalent Sn(3)O6 octahedra, and  a faceface with one Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 17-25°. There are ten inequivalent O sites. In the first O site, O(6) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(3), and two equivalent Sn(3) atoms. In the second O site, O(7) is bonded in a 5-coordinate geometry to two equivalent Ba(1), one Sr(2), and two equivalent Sn(1) atoms. In the third O site, O(8) is bonded in a 5-coordinate geometry to one Ba(1), one Sr(1), one Sr(3), one Sn(2), and one Sn(3) atom. In the fourth O site, O(9) is bonded in a 3-coordinate geometry to two equivalent Ba(1), one Sn(1), and one Sn(2) atom. In the fifth O site, O(10) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Sr(3), and two equivalent Sn(3) atoms. In the sixth O site, O(1) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Sr(2), and two equivalent Sn(1) atoms. In the seventh O site, O(2) is bonded in a 4-coordinate geometry to one Ba(1), one Sr(3), one Sn(2), and one Sn(3) atom. In the eighth O site, O(3) is bonded in a 4-coordinate geometry to one Ba(1), one Sr(1), one Sr(3), one Sn(2), and one Sn(3) atom. In the ninth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Ba(1), one Sr(2), one Sr(3), one Sn(1), and one Sn(2) atom. In the tenth O site, O(5) is bonded in a 6-coordinate geometry to two equivalent Ba(1), one Sr(2), one Sr(3), one Sn(1), and one Sn(2) atom. is represented by the CIF card [CIF]
data_BaSr2(SnO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.840
_cell_length_b   5.840
_cell_length_c   14.285
_cell_angle_alpha   89.802
_cell_angle_beta   89.802
_cell_angle_gamma   60.397
_symmetry_Int_Tables_number   1
_cell_volume   423.615
_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
  Ba  Ba0  1  0.666  0.668  0.667  1.0
  Ba  Ba1  1  0.332  0.334  0.333  1.0
  Sr  Sr2  1  0.993  0.007  0.000  1.0
  Sr  Sr3  1  0.010  0.990  0.500  1.0
  Sr  Sr4  1  0.677  0.656  0.165  1.0
  Sr  Sr5  1  0.344  0.323  0.835  1.0
  Sn  Sn6  1  0.334  0.333  0.584  1.0
  Sn  Sn7  1  0.002  0.999  0.247  1.0
  Sn  Sn8  1  0.667  0.666  0.918  1.0
  Sn  Sn9  1  0.001  0.998  0.753  1.0
  Sn  Sn10  1  0.667  0.666  0.416  1.0
  Sn  Sn11  1  0.334  0.333  0.082  1.0
  O  O12  1  0.468  0.985  0.508  1.0
  O  O13  1  0.131  0.649  0.173  1.0
  O  O14  1  0.802  0.308  0.848  1.0
  O  O15  1  0.015  0.532  0.492  1.0
  O  O16  1  0.692  0.198  0.152  1.0
  O  O17  1  0.351  0.869  0.827  1.0
  O  O18  1  0.638  0.161  0.682  1.0
  O  O19  1  0.304  0.827  0.346  1.0
  O  O20  1  0.973  0.464  0.014  1.0
  O  O21  1  0.173  0.696  0.654  1.0
  O  O22  1  0.839  0.362  0.318  1.0
  O  O23  1  0.536  0.027  0.986  1.0
  O  O24  1  0.569  0.431  0.500  1.0
  O  O25  1  0.243  0.090  0.164  1.0
  O  O26  1  0.910  0.757  0.836  1.0
  O  O27  1  0.119  0.213  0.668  1.0
  O  O28  1  0.787  0.881  0.332  1.0
  O  O29  1  0.424  0.576  0.000  1.0
[/CIF]
.