The structure described by BaSO2 crystallizes in the orthorhombic Pnma space group. Ba(1) is bonded in a 7-coordinate geometry to one S(1), three equivalent O(1), and three equivalent O(2) atoms. S(1) is bonded in a water-like geometry to one Ba(1), one O(1), and one O(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to three equivalent Ba(1) and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Ba(1) and one S(1) atom. is represented by the CIF card [CIF]
data_BaSO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.977
_cell_length_b   6.967
_cell_length_c   8.955
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   310.548
_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
  Ba  Ba0  1  0.250  0.316  0.694  1.0
  Ba  Ba1  1  0.250  0.184  0.194  1.0
  Ba  Ba2  1  0.750  0.684  0.306  1.0
  Ba  Ba3  1  0.750  0.816  0.806  1.0
  S  S4  1  0.750  0.279  0.928  1.0
  S  S5  1  0.750  0.221  0.428  1.0
  S  S6  1  0.250  0.721  0.072  1.0
  S  S7  1  0.250  0.779  0.572  1.0
  O  O8  1  0.750  0.435  0.797  1.0
  O  O9  1  0.750  0.065  0.297  1.0
  O  O10  1  0.250  0.565  0.203  1.0
  O  O11  1  0.250  0.935  0.703  1.0
  O  O12  1  0.750  0.121  0.586  1.0
  O  O13  1  0.750  0.379  0.086  1.0
  O  O14  1  0.250  0.879  0.414  1.0
  O  O15  1  0.250  0.621  0.914  1.0
[/CIF]
.
The structure described by BaSO2 crystallizes in the orthorhombic Pnma space group. Ba(1) is bonded in a 7-coordinate geometry to one S(1), three equivalent O(1), and three equivalent O(2) atoms. S(1) is bonded in a water-like geometry to one Ba(1), one O(1), and one O(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to three equivalent Ba(1) and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Ba(1) and one S(1) atom. is represented by the CIF card [CIF]
data_BaSO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.977
_cell_length_b   6.967
_cell_length_c   8.955
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   310.548
_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
  Ba  Ba0  1  0.250  0.316  0.694  1.0
  Ba  Ba1  1  0.250  0.184  0.194  1.0
  Ba  Ba2  1  0.750  0.684  0.306  1.0
  Ba  Ba3  1  0.750  0.816  0.806  1.0
  S  S4  1  0.750  0.279  0.928  1.0
  S  S5  1  0.750  0.221  0.428  1.0
  S  S6  1  0.250  0.721  0.072  1.0
  S  S7  1  0.250  0.779  0.572  1.0
  O  O8  1  0.750  0.435  0.797  1.0
  O  O9  1  0.750  0.065  0.297  1.0
  O  O10  1  0.250  0.565  0.203  1.0
  O  O11  1  0.250  0.935  0.703  1.0
  O  O12  1  0.750  0.121  0.586  1.0
  O  O13  1  0.750  0.379  0.086  1.0
  O  O14  1  0.250  0.879  0.414  1.0
  O  O15  1  0.250  0.621  0.914  1.0
[/CIF]
.