The crystal structure described by In2Bi2O7 crystallizes in the monoclinic P2_1 space group. There are four inequivalent In sites. In the first In site, In(1) is bonded to one O(1), one O(11), one O(2), one O(3), one O(5), and one O(7) atom to form InO6 octahedra that share corners with two equivalent In(2)O6 octahedra, corners with two equivalent In(3)O6 octahedra, corners with two equivalent Bi(1)O6 octahedra, and  an edgeedge with one Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-59°. In the second In site, In(2) is bonded to one O(10), one O(2), one O(4), one O(7), and two equivalent O(6) atoms to form corner-sharing InO6 octahedra. The corner-sharing octahedral tilt angles range from 45-51°. In the third In site, In(3) is bonded to one O(11), one O(12), one O(14), one O(3), one O(8), and one O(9) atom to form distorted InO6 octahedra that share  a cornercorner with one Bi(1)O6 octahedra, corners with two equivalent In(1)O6 octahedra, corners with two equivalent In(4)O6 octahedra, and  an edgeedge with one Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-59°. In the fourth In site, In(4) is bonded to one O(10), one O(14), one O(4), one O(9), and two equivalent O(13) atoms to form distorted corner-sharing InO6 octahedra. The corner-sharing octahedral tilt angles range from 42-52°. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(12), one O(3), one O(5), one O(8), and two equivalent O(1) atoms to form BiO6 octahedra that share  a cornercorner with one In(3)O6 octahedra, corners with two equivalent In(1)O6 octahedra, corners with two equivalent Bi(1)O6 octahedra,  an edgeedge with one In(1)O6 octahedra, and  an edgeedge with one In(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-59°. In the second Bi site, Bi(2) is bonded in a 5-coordinate geometry to one O(10), one O(13), one O(2), one O(4), and one O(9) atom. In the third Bi site, Bi(3) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(13), one O(14), one O(6), one O(7), and one O(9) atom. In the fourth Bi site, Bi(4) is bonded in a 7-coordinate geometry to one O(11), one O(14), one O(5), one O(7), one O(8), and two equivalent O(12) atoms. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one In(1) and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a trigonal planar geometry to one In(1), one In(2), and one Bi(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one In(1), one In(3), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one In(2), one In(4), and one Bi(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one In(1), one Bi(1), and one Bi(4) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent In(2) and one Bi(3) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one In(1), one In(2), one Bi(3), and one Bi(4) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one In(3), one Bi(1), and one Bi(4) atom. In the ninth O site, O(9) is bonded to one In(3), one In(4), one Bi(2), and one Bi(3) atom to form a mixture of distorted edge and corner-sharing OIn2Bi2 tetrahedra. In the tenth O site, O(10) is bonded to one In(2), one In(4), one Bi(2), and one Bi(3) atom to form a mixture of distorted edge and corner-sharing OIn2Bi2 trigonal pyramids. In the eleventh O site, O(11) is bonded in a distorted see-saw-like geometry to one In(1), one In(3), one Bi(3), and one Bi(4) atom. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to one In(3), one Bi(1), and two equivalent Bi(4) atoms. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to two equivalent In(4), one Bi(2), and one Bi(3) atom. In the fourteenth O site, O(14) is bonded to one In(3), one In(4), one Bi(3), and one Bi(4) atom to form a mixture of distorted edge and corner-sharing OIn2Bi2 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_In2Bi2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.561
_cell_length_b   8.111
_cell_length_c   14.017
_cell_angle_alpha   80.939
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   624.359
_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
  In  In0  1  0.274  0.932  0.314  1.0
  In  In1  1  0.761  0.979  0.113  1.0
  In  In2  1  0.764  0.607  0.672  1.0
  In  In3  1  0.248  0.540  0.877  1.0
  In  In4  1  0.748  0.460  0.123  1.0
  In  In5  1  0.264  0.393  0.328  1.0
  In  In6  1  0.261  0.021  0.887  1.0
  In  In7  1  0.774  0.068  0.686  1.0
  Bi  Bi8  1  0.327  0.834  0.548  1.0
  Bi  Bi9  1  0.762  0.766  0.921  1.0
  Bi  Bi10  1  0.225  0.699  0.144  1.0
  Bi  Bi11  1  0.780  0.620  0.377  1.0
  Bi  Bi12  1  0.280  0.380  0.623  1.0
  Bi  Bi13  1  0.725  0.301  0.856  1.0
  Bi  Bi14  1  0.262  0.234  0.079  1.0
  Bi  Bi15  1  0.827  0.166  0.452  1.0
  O  O16  1  0.563  0.961  0.426  1.0
  O  O17  1  0.438  0.032  0.184  1.0
  O  O18  1  0.585  0.846  0.659  1.0
  O  O19  1  0.395  0.781  0.869  1.0
  O  O20  1  0.091  0.801  0.436  1.0
  O  O21  1  0.097  0.917  0.034  1.0
  O  O22  1  0.983  0.847  0.227  1.0
  O  O23  1  0.124  0.638  0.631  1.0
  O  O24  1  0.892  0.584  0.824  1.0
  O  O25  1  0.591  0.728  0.089  1.0
  O  O26  1  0.408  0.673  0.292  1.0
  O  O27  1  0.550  0.600  0.539  1.0
  O  O28  1  0.566  0.439  0.965  1.0
  O  O29  1  0.468  0.477  0.758  1.0
  O  O30  1  0.968  0.523  0.242  1.0
  O  O31  1  0.066  0.561  0.035  1.0
  O  O32  1  0.050  0.400  0.461  1.0
  O  O33  1  0.908  0.327  0.708  1.0
  O  O34  1  0.091  0.272  0.911  1.0
  O  O35  1  0.392  0.416  0.176  1.0
  O  O36  1  0.624  0.362  0.369  1.0
  O  O37  1  0.483  0.153  0.773  1.0
  O  O38  1  0.597  0.083  0.966  1.0
  O  O39  1  0.591  0.199  0.564  1.0
  O  O40  1  0.895  0.219  0.131  1.0
  O  O41  1  0.085  0.154  0.341  1.0
  O  O42  1  0.938  0.968  0.816  1.0
  O  O43  1  0.063  0.039  0.574  1.0
[/CIF]
.
The crystal structure described by In2Bi2O7 crystallizes in the monoclinic P2_1 space group. There are four inequivalent In sites. In the first In site, In(1) is bonded to one O(1), one O(11), one O(2), one O(3), one O(5), and one O(7) atom to form InO6 octahedra that share corners with two equivalent In(2)O6 octahedra, corners with two equivalent In(3)O6 octahedra, corners with two equivalent Bi(1)O6 octahedra, and  an edgeedge with one Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-59°. In the second In site, In(2) is bonded to one O(10), one O(2), one O(4), one O(7), and two equivalent O(6) atoms to form corner-sharing InO6 octahedra. The corner-sharing octahedral tilt angles range from 45-51°. In the third In site, In(3) is bonded to one O(11), one O(12), one O(14), one O(3), one O(8), and one O(9) atom to form distorted InO6 octahedra that share  a cornercorner with one Bi(1)O6 octahedra, corners with two equivalent In(1)O6 octahedra, corners with two equivalent In(4)O6 octahedra, and  an edgeedge with one Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-59°. In the fourth In site, In(4) is bonded to one O(10), one O(14), one O(4), one O(9), and two equivalent O(13) atoms to form distorted corner-sharing InO6 octahedra. The corner-sharing octahedral tilt angles range from 42-52°. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(12), one O(3), one O(5), one O(8), and two equivalent O(1) atoms to form BiO6 octahedra that share  a cornercorner with one In(3)O6 octahedra, corners with two equivalent In(1)O6 octahedra, corners with two equivalent Bi(1)O6 octahedra,  an edgeedge with one In(1)O6 octahedra, and  an edgeedge with one In(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-59°. In the second Bi site, Bi(2) is bonded in a 5-coordinate geometry to one O(10), one O(13), one O(2), one O(4), and one O(9) atom. In the third Bi site, Bi(3) is bonded in a 7-coordinate geometry to one O(10), one O(11), one O(13), one O(14), one O(6), one O(7), and one O(9) atom. In the fourth Bi site, Bi(4) is bonded in a 7-coordinate geometry to one O(11), one O(14), one O(5), one O(7), one O(8), and two equivalent O(12) atoms. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one In(1) and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a trigonal planar geometry to one In(1), one In(2), and one Bi(2) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one In(1), one In(3), and one Bi(1) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one In(2), one In(4), and one Bi(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one In(1), one Bi(1), and one Bi(4) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent In(2) and one Bi(3) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one In(1), one In(2), one Bi(3), and one Bi(4) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one In(3), one Bi(1), and one Bi(4) atom. In the ninth O site, O(9) is bonded to one In(3), one In(4), one Bi(2), and one Bi(3) atom to form a mixture of distorted edge and corner-sharing OIn2Bi2 tetrahedra. In the tenth O site, O(10) is bonded to one In(2), one In(4), one Bi(2), and one Bi(3) atom to form a mixture of distorted edge and corner-sharing OIn2Bi2 trigonal pyramids. In the eleventh O site, O(11) is bonded in a distorted see-saw-like geometry to one In(1), one In(3), one Bi(3), and one Bi(4) atom. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to one In(3), one Bi(1), and two equivalent Bi(4) atoms. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to two equivalent In(4), one Bi(2), and one Bi(3) atom. In the fourteenth O site, O(14) is bonded to one In(3), one In(4), one Bi(3), and one Bi(4) atom to form a mixture of distorted edge and corner-sharing OIn2Bi2 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_In2Bi2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.561
_cell_length_b   8.111
_cell_length_c   14.017
_cell_angle_alpha   80.939
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   624.359
_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
  In  In0  1  0.274  0.932  0.314  1.0
  In  In1  1  0.761  0.979  0.113  1.0
  In  In2  1  0.764  0.607  0.672  1.0
  In  In3  1  0.248  0.540  0.877  1.0
  In  In4  1  0.748  0.460  0.123  1.0
  In  In5  1  0.264  0.393  0.328  1.0
  In  In6  1  0.261  0.021  0.887  1.0
  In  In7  1  0.774  0.068  0.686  1.0
  Bi  Bi8  1  0.327  0.834  0.548  1.0
  Bi  Bi9  1  0.762  0.766  0.921  1.0
  Bi  Bi10  1  0.225  0.699  0.144  1.0
  Bi  Bi11  1  0.780  0.620  0.377  1.0
  Bi  Bi12  1  0.280  0.380  0.623  1.0
  Bi  Bi13  1  0.725  0.301  0.856  1.0
  Bi  Bi14  1  0.262  0.234  0.079  1.0
  Bi  Bi15  1  0.827  0.166  0.452  1.0
  O  O16  1  0.563  0.961  0.426  1.0
  O  O17  1  0.438  0.032  0.184  1.0
  O  O18  1  0.585  0.846  0.659  1.0
  O  O19  1  0.395  0.781  0.869  1.0
  O  O20  1  0.091  0.801  0.436  1.0
  O  O21  1  0.097  0.917  0.034  1.0
  O  O22  1  0.983  0.847  0.227  1.0
  O  O23  1  0.124  0.638  0.631  1.0
  O  O24  1  0.892  0.584  0.824  1.0
  O  O25  1  0.591  0.728  0.089  1.0
  O  O26  1  0.408  0.673  0.292  1.0
  O  O27  1  0.550  0.600  0.539  1.0
  O  O28  1  0.566  0.439  0.965  1.0
  O  O29  1  0.468  0.477  0.758  1.0
  O  O30  1  0.968  0.523  0.242  1.0
  O  O31  1  0.066  0.561  0.035  1.0
  O  O32  1  0.050  0.400  0.461  1.0
  O  O33  1  0.908  0.327  0.708  1.0
  O  O34  1  0.091  0.272  0.911  1.0
  O  O35  1  0.392  0.416  0.176  1.0
  O  O36  1  0.624  0.362  0.369  1.0
  O  O37  1  0.483  0.153  0.773  1.0
  O  O38  1  0.597  0.083  0.966  1.0
  O  O39  1  0.591  0.199  0.564  1.0
  O  O40  1  0.895  0.219  0.131  1.0
  O  O41  1  0.085  0.154  0.341  1.0
  O  O42  1  0.938  0.968  0.816  1.0
  O  O43  1  0.063  0.039  0.574  1.0
[/CIF]
.