The structure described by InPbAs2O8 crystallizes in the monoclinic P2_1/c space group. In(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form InO6 octahedra that share corners with three equivalent As(1)O4 tetrahedra and corners with three equivalent As(2)O4 tetrahedra. Pb(1) is bonded in a 6-coordinate geometry to one O(3), one O(6), one O(7), one O(8), and two equivalent O(4) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form AsO4 tetrahedra that share corners with three equivalent In(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-58°. In the second As site, As(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form AsO4 tetrahedra that share corners with three equivalent In(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-57°. There are eight inequivalent O sites. In the first O site, O(5) is bonded in a bent 120 degrees geometry to one In(1) and one As(2) atom. In the second O site, O(6) is bonded in a distorted trigonal planar geometry to one In(1), one Pb(1), and one As(2) atom. In the third O site, O(7) is bonded in a 3-coordinate geometry to one In(1), one Pb(1), and one As(2) atom. In the fourth O site, O(8) is bonded in a water-like geometry to one Pb(1) and one As(2) atom. In the fifth O site, O(1) is bonded in a distorted bent 120 degrees geometry to one In(1) and one As(1) atom. In the sixth O site, O(2) is bonded in a bent 120 degrees geometry to one In(1) and one As(1) atom. In the seventh O site, O(3) is bonded in a 3-coordinate geometry to one In(1), one Pb(1), and one As(1) atom. In the eighth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Pb(1) and one As(1) atom. is represented by the CIF file [CIF]
data_InAs2PbO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.618
_cell_length_b   5.091
_cell_length_c   16.444
_cell_angle_alpha   75.329
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   698.008
_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  0.953  0.697  0.642  1.0
  In  In1  1  0.547  0.697  0.142  1.0
  In  In2  1  0.047  0.303  0.358  1.0
  In  In3  1  0.453  0.303  0.858  1.0
  As  As4  1  0.795  0.309  0.517  1.0
  As  As5  1  0.705  0.309  0.017  1.0
  As  As6  1  0.205  0.691  0.483  1.0
  As  As7  1  0.295  0.691  0.983  1.0
  As  As8  1  0.764  0.079  0.763  1.0
  As  As9  1  0.736  0.079  0.263  1.0
  As  As10  1  0.236  0.921  0.237  1.0
  As  As11  1  0.264  0.921  0.737  1.0
  Pb  Pb12  1  0.521  0.776  0.619  1.0
  Pb  Pb13  1  0.979  0.776  0.119  1.0
  Pb  Pb14  1  0.479  0.224  0.381  1.0
  Pb  Pb15  1  0.021  0.224  0.881  1.0
  O  O16  1  0.944  0.112  0.566  1.0
  O  O17  1  0.556  0.112  0.066  1.0
  O  O18  1  0.056  0.888  0.434  1.0
  O  O19  1  0.444  0.888  0.934  1.0
  O  O20  1  0.839  0.421  0.412  1.0
  O  O21  1  0.661  0.421  0.912  1.0
  O  O22  1  0.161  0.579  0.588  1.0
  O  O23  1  0.339  0.579  0.088  1.0
  O  O24  1  0.767  0.568  0.568  1.0
  O  O25  1  0.733  0.568  0.068  1.0
  O  O26  1  0.233  0.432  0.432  1.0
  O  O27  1  0.267  0.432  0.932  1.0
  O  O28  1  0.610  0.162  0.519  1.0
  O  O29  1  0.890  0.162  0.019  1.0
  O  O30  1  0.390  0.838  0.481  1.0
  O  O31  1  0.110  0.838  0.981  1.0
  O  O32  1  0.590  0.248  0.753  1.0
  O  O33  1  0.910  0.248  0.253  1.0
  O  O34  1  0.410  0.752  0.247  1.0
  O  O35  1  0.090  0.752  0.747  1.0
  O  O36  1  0.747  0.856  0.699  1.0
  O  O37  1  0.753  0.856  0.199  1.0
  O  O38  1  0.253  0.144  0.301  1.0
  O  O39  1  0.247  0.144  0.801  1.0
  O  O40  1  0.918  0.307  0.734  1.0
  O  O41  1  0.582  0.307  0.234  1.0
  O  O42  1  0.082  0.693  0.266  1.0
  O  O43  1  0.418  0.693  0.766  1.0
  O  O44  1  0.826  0.925  0.864  1.0
  O  O45  1  0.674  0.925  0.364  1.0
  O  O46  1  0.174  0.075  0.136  1.0
  O  O47  1  0.326  0.075  0.636  1.0
[/CIF]
.
The structure described by InPbAs2O8 crystallizes in the monoclinic P2_1/c space group. In(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form InO6 octahedra that share corners with three equivalent As(1)O4 tetrahedra and corners with three equivalent As(2)O4 tetrahedra. Pb(1) is bonded in a 6-coordinate geometry to one O(3), one O(6), one O(7), one O(8), and two equivalent O(4) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form AsO4 tetrahedra that share corners with three equivalent In(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-58°. In the second As site, As(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form AsO4 tetrahedra that share corners with three equivalent In(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-57°. There are eight inequivalent O sites. In the first O site, O(5) is bonded in a bent 120 degrees geometry to one In(1) and one As(2) atom. In the second O site, O(6) is bonded in a distorted trigonal planar geometry to one In(1), one Pb(1), and one As(2) atom. In the third O site, O(7) is bonded in a 3-coordinate geometry to one In(1), one Pb(1), and one As(2) atom. In the fourth O site, O(8) is bonded in a water-like geometry to one Pb(1) and one As(2) atom. In the fifth O site, O(1) is bonded in a distorted bent 120 degrees geometry to one In(1) and one As(1) atom. In the sixth O site, O(2) is bonded in a bent 120 degrees geometry to one In(1) and one As(1) atom. In the seventh O site, O(3) is bonded in a 3-coordinate geometry to one In(1), one Pb(1), and one As(1) atom. In the eighth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Pb(1) and one As(1) atom. is represented by the CIF file [CIF]
data_InAs2PbO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.618
_cell_length_b   5.091
_cell_length_c   16.444
_cell_angle_alpha   75.329
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   698.008
_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  0.953  0.697  0.642  1.0
  In  In1  1  0.547  0.697  0.142  1.0
  In  In2  1  0.047  0.303  0.358  1.0
  In  In3  1  0.453  0.303  0.858  1.0
  As  As4  1  0.795  0.309  0.517  1.0
  As  As5  1  0.705  0.309  0.017  1.0
  As  As6  1  0.205  0.691  0.483  1.0
  As  As7  1  0.295  0.691  0.983  1.0
  As  As8  1  0.764  0.079  0.763  1.0
  As  As9  1  0.736  0.079  0.263  1.0
  As  As10  1  0.236  0.921  0.237  1.0
  As  As11  1  0.264  0.921  0.737  1.0
  Pb  Pb12  1  0.521  0.776  0.619  1.0
  Pb  Pb13  1  0.979  0.776  0.119  1.0
  Pb  Pb14  1  0.479  0.224  0.381  1.0
  Pb  Pb15  1  0.021  0.224  0.881  1.0
  O  O16  1  0.944  0.112  0.566  1.0
  O  O17  1  0.556  0.112  0.066  1.0
  O  O18  1  0.056  0.888  0.434  1.0
  O  O19  1  0.444  0.888  0.934  1.0
  O  O20  1  0.839  0.421  0.412  1.0
  O  O21  1  0.661  0.421  0.912  1.0
  O  O22  1  0.161  0.579  0.588  1.0
  O  O23  1  0.339  0.579  0.088  1.0
  O  O24  1  0.767  0.568  0.568  1.0
  O  O25  1  0.733  0.568  0.068  1.0
  O  O26  1  0.233  0.432  0.432  1.0
  O  O27  1  0.267  0.432  0.932  1.0
  O  O28  1  0.610  0.162  0.519  1.0
  O  O29  1  0.890  0.162  0.019  1.0
  O  O30  1  0.390  0.838  0.481  1.0
  O  O31  1  0.110  0.838  0.981  1.0
  O  O32  1  0.590  0.248  0.753  1.0
  O  O33  1  0.910  0.248  0.253  1.0
  O  O34  1  0.410  0.752  0.247  1.0
  O  O35  1  0.090  0.752  0.747  1.0
  O  O36  1  0.747  0.856  0.699  1.0
  O  O37  1  0.753  0.856  0.199  1.0
  O  O38  1  0.253  0.144  0.301  1.0
  O  O39  1  0.247  0.144  0.801  1.0
  O  O40  1  0.918  0.307  0.734  1.0
  O  O41  1  0.582  0.307  0.234  1.0
  O  O42  1  0.082  0.693  0.266  1.0
  O  O43  1  0.418  0.693  0.766  1.0
  O  O44  1  0.826  0.925  0.864  1.0
  O  O45  1  0.674  0.925  0.364  1.0
  O  O46  1  0.174  0.075  0.136  1.0
  O  O47  1  0.326  0.075  0.636  1.0
[/CIF]
.