The material structure described by Mo2Bi2Se2O13 crystallizes in the triclinic P-1 space group. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 6-coordinate geometry to one O(10), one O(12), one O(5), one O(7), one O(8), and one O(9) atom. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(13), one O(2), one O(6), and one O(9) atom. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to one O(3), one O(5), one O(6), one O(7), one O(9), and two equivalent O(8) atoms. In the second Bi site, Bi(2) is bonded in a 7-coordinate geometry to one O(12), one O(13), one O(2), one O(3), one O(4), and two equivalent O(1) atoms. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(4), one O(5), and one O(6) atom. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Bi(2) and one Se(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mo(2), one Bi(2), and one Se(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Bi(1), one Bi(2), and one Se(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Bi(2) and one Se(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mo(1), one Bi(1), and one Se(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mo(2), one Bi(1), and one Se(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Mo(1) and one Bi(1) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Mo(1) and two equivalent Bi(1) atoms. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(2), and one Bi(1) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one Mo(1) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one Mo(2) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Mo(1), one Mo(2), and one Bi(2) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one Mo(2) and one Bi(2) atom. is represented by the CIF file [CIF]
data_Bi2Mo2Se2O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.713
_cell_length_b   7.069
_cell_length_c   11.848
_cell_angle_alpha   89.467
_cell_angle_beta   82.390
_cell_angle_gamma   86.710
_symmetry_Int_Tables_number   1
_cell_volume   556.394
_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
  Bi  Bi0  1  0.193  0.875  0.888  1.0
  Bi  Bi1  1  0.807  0.125  0.112  1.0
  Bi  Bi2  1  0.633  0.599  0.648  1.0
  Bi  Bi3  1  0.367  0.401  0.352  1.0
  Mo  Mo4  1  0.750  0.114  0.812  1.0
  Mo  Mo5  1  0.250  0.886  0.188  1.0
  Mo  Mo6  1  0.123  0.360  0.700  1.0
  Mo  Mo7  1  0.877  0.640  0.300  1.0
  Se  Se8  1  0.180  0.788  0.566  1.0
  Se  Se9  1  0.820  0.212  0.434  1.0
  Se  Se10  1  0.238  0.417  0.060  1.0
  Se  Se11  1  0.762  0.583  0.940  1.0
  O  O12  1  0.373  0.653  0.491  1.0
  O  O13  1  0.627  0.347  0.509  1.0
  O  O14  1  0.021  0.603  0.622  1.0
  O  O15  1  0.979  0.397  0.378  1.0
  O  O16  1  0.305  0.837  0.679  1.0
  O  O17  1  0.695  0.163  0.321  1.0
  O  O18  1  0.400  0.345  0.156  1.0
  O  O19  1  0.600  0.655  0.844  1.0
  O  O20  1  0.263  0.664  0.050  1.0
  O  O21  1  0.737  0.336  0.950  1.0
  O  O22  1  0.003  0.585  0.860  1.0
  O  O23  1  0.997  0.415  0.140  1.0
  O  O24  1  0.490  0.100  0.851  1.0
  O  O25  1  0.510  0.900  0.149  1.0
  O  O26  1  0.849  0.964  0.935  1.0
  O  O27  1  0.151  0.036  0.065  1.0
  O  O28  1  0.084  0.167  0.806  1.0
  O  O29  1  0.916  0.833  0.194  1.0
  O  O30  1  0.803  0.948  0.700  1.0
  O  O31  1  0.197  0.052  0.300  1.0
  O  O32  1  0.186  0.237  0.572  1.0
  O  O33  1  0.814  0.763  0.428  1.0
  O  O34  1  0.805  0.341  0.716  1.0
  O  O35  1  0.195  0.659  0.284  1.0
  O  O36  1  0.358  0.448  0.724  1.0
  O  O37  1  0.642  0.552  0.276  1.0
[/CIF]
.
The material structure described by Mo2Bi2Se2O13 crystallizes in the triclinic P-1 space group. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 6-coordinate geometry to one O(10), one O(12), one O(5), one O(7), one O(8), and one O(9) atom. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(13), one O(2), one O(6), and one O(9) atom. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to one O(3), one O(5), one O(6), one O(7), one O(9), and two equivalent O(8) atoms. In the second Bi site, Bi(2) is bonded in a 7-coordinate geometry to one O(12), one O(13), one O(2), one O(3), one O(4), and two equivalent O(1) atoms. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(4), one O(5), and one O(6) atom. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Bi(2) and one Se(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Mo(2), one Bi(2), and one Se(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Bi(1), one Bi(2), and one Se(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Bi(2) and one Se(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mo(1), one Bi(1), and one Se(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mo(2), one Bi(1), and one Se(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Mo(1) and one Bi(1) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Mo(1) and two equivalent Bi(1) atoms. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Mo(1), one Mo(2), and one Bi(1) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one Mo(1) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one Mo(2) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Mo(1), one Mo(2), and one Bi(2) atom. In the thirteenth O site, O(13) is bonded in a bent 150 degrees geometry to one Mo(2) and one Bi(2) atom. is represented by the CIF file [CIF]
data_Bi2Mo2Se2O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.713
_cell_length_b   7.069
_cell_length_c   11.848
_cell_angle_alpha   89.467
_cell_angle_beta   82.390
_cell_angle_gamma   86.710
_symmetry_Int_Tables_number   1
_cell_volume   556.394
_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
  Bi  Bi0  1  0.193  0.875  0.888  1.0
  Bi  Bi1  1  0.807  0.125  0.112  1.0
  Bi  Bi2  1  0.633  0.599  0.648  1.0
  Bi  Bi3  1  0.367  0.401  0.352  1.0
  Mo  Mo4  1  0.750  0.114  0.812  1.0
  Mo  Mo5  1  0.250  0.886  0.188  1.0
  Mo  Mo6  1  0.123  0.360  0.700  1.0
  Mo  Mo7  1  0.877  0.640  0.300  1.0
  Se  Se8  1  0.180  0.788  0.566  1.0
  Se  Se9  1  0.820  0.212  0.434  1.0
  Se  Se10  1  0.238  0.417  0.060  1.0
  Se  Se11  1  0.762  0.583  0.940  1.0
  O  O12  1  0.373  0.653  0.491  1.0
  O  O13  1  0.627  0.347  0.509  1.0
  O  O14  1  0.021  0.603  0.622  1.0
  O  O15  1  0.979  0.397  0.378  1.0
  O  O16  1  0.305  0.837  0.679  1.0
  O  O17  1  0.695  0.163  0.321  1.0
  O  O18  1  0.400  0.345  0.156  1.0
  O  O19  1  0.600  0.655  0.844  1.0
  O  O20  1  0.263  0.664  0.050  1.0
  O  O21  1  0.737  0.336  0.950  1.0
  O  O22  1  0.003  0.585  0.860  1.0
  O  O23  1  0.997  0.415  0.140  1.0
  O  O24  1  0.490  0.100  0.851  1.0
  O  O25  1  0.510  0.900  0.149  1.0
  O  O26  1  0.849  0.964  0.935  1.0
  O  O27  1  0.151  0.036  0.065  1.0
  O  O28  1  0.084  0.167  0.806  1.0
  O  O29  1  0.916  0.833  0.194  1.0
  O  O30  1  0.803  0.948  0.700  1.0
  O  O31  1  0.197  0.052  0.300  1.0
  O  O32  1  0.186  0.237  0.572  1.0
  O  O33  1  0.814  0.763  0.428  1.0
  O  O34  1  0.805  0.341  0.716  1.0
  O  O35  1  0.195  0.659  0.284  1.0
  O  O36  1  0.358  0.448  0.724  1.0
  O  O37  1  0.642  0.552  0.276  1.0
[/CIF]
.