data_SrMn2BiO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.59
_cell_length_b   5.59
_cell_length_c   5.59
_cell_angle_alpha   120.43
_cell_angle_beta   120.43
_cell_angle_gamma   89.26
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrMn2BiO6
_chemical_formula_sum   'Sr1 Mn2 Bi1 O6'
_cell_volume   122.48
_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  0.0  0.0  0.21  1.0
  Mn  Mn1  1  0.0  0.78  0.26  1.0
  Mn  Mn2  1  0.78  0.0  0.26  1.0
  Bi  Bi3  1  0.0  0.0  0.83  1.0
  O  O4  1  0.68  0.32  0.41  1.0
  O  O5  1  0.32  0.68  0.41  1.0
  O  O6  1  0.32  0.32  0.41  1.0
  O  O7  1  0.45  0.45  0.44  1.0
  O  O8  1  0.0  0.78  0.33  1.0
  O  O9  1  0.78  0.0  0.33  1.0

data_SrMn2BiO6
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.85
_cell_length_b   7.85
_cell_length_c   5.59
_cell_angle_alpha   90.0
_cell_angle_beta   134.63
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrMn2BiO6
_chemical_formula_sum   'Sr2 Mn4 Bi2 O12'
_cell_volume   244.96
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  2  0.0  0.0  0.21  1.0
  Mn  Mn1  4  0.11  0.11  0.49  1.0
  Bi  Bi2  2  0.0  0.0  0.83  1.0
  O  O3  4  0.0  0.32  0.41  1.0
  O  O4  4  0.11  0.11  0.55  1.0
  O  O5  2  0.05  0.5  0.53  1.0
  O  O6  2  0.18  0.5  0.77  1.0

Sr Mn Mn Bi O O O O O O
SrMn2BiO6 crystallizes in the monoclinic Cm space group. Sr(1) is bonded in a 4-coordinate geometry to two equivalent Mn(1), one Bi(1), and one O(2) atom. Both Sr(1)-Mn(1) bond lengths are 1.42 Å. The Sr(1)-Bi(1) bond length is 2.11 Å. The Sr(1)-O(2) bond length is 1.92 Å. Mn(1) is bonded in a single-bond geometry to one Sr(1), one O(1), and one O(4) atom. The Mn(1)-O(1) bond length is 1.76 Å. The Mn(1)-O(4) bond length is 0.35 Å. Bi(1) is bonded in a 4-coordinate geometry to one Sr(1), one O(2), and two equivalent O(4) atoms. The Bi(1)-O(2) bond length is 2.29 Å. Both Bi(1)-O(4) bond lengths are 2.45 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Mn(1) and one O(3) atom. The O(1)-O(3) bond length is 1.48 Å. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Sr(1), one Bi(1), and one O(3) atom. The O(2)-O(3) bond length is 0.98 Å. In the third O site, O(3) is bonded in a 3-coordinate geometry to one O(2) and two equivalent O(1) atoms. In the fourth O site, O(4) is bonded in a single-bond geometry to one Mn(1) and one Bi(1) atom.