The compound described by BiAsO4 is Zircon-like structured and crystallizes in the monoclinic P2_1/c space group. Bi(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. As(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Bi(1) and one As(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Bi(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Bi(1) and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Bi(1) and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_BiAsO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.174
_cell_length_b   6.745
_cell_length_c   8.293
_cell_angle_alpha   53.294
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   321.677
_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
  Bi  Bi0  1  0.635  0.198  0.219  1.0
  Bi  Bi1  1  0.135  0.802  0.281  1.0
  Bi  Bi2  1  0.365  0.802  0.781  1.0
  Bi  Bi3  1  0.865  0.198  0.719  1.0
  As  As4  1  0.662  0.688  0.201  1.0
  As  As5  1  0.162  0.312  0.299  1.0
  As  As6  1  0.338  0.312  0.799  1.0
  As  As7  1  0.838  0.688  0.701  1.0
  O  O8  1  0.708  0.387  0.391  1.0
  O  O9  1  0.208  0.613  0.109  1.0
  O  O10  1  0.292  0.613  0.609  1.0
  O  O11  1  0.792  0.387  0.891  1.0
  O  O12  1  0.603  0.640  0.025  1.0
  O  O13  1  0.103  0.360  0.475  1.0
  O  O14  1  0.397  0.360  0.975  1.0
  O  O15  1  0.897  0.640  0.525  1.0
  O  O16  1  0.000  0.838  0.737  1.0
  O  O17  1  0.500  0.162  0.763  1.0
  O  O18  1  1.000  0.162  0.263  1.0
  O  O19  1  0.500  0.838  0.237  1.0
  O  O20  1  0.644  0.870  0.610  1.0
  O  O21  1  0.144  0.130  0.890  1.0
  O  O22  1  0.356  0.130  0.390  1.0
  O  O23  1  0.856  0.870  0.110  1.0
[/CIF]
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The compound described by BiAsO4 is Zircon-like structured and crystallizes in the monoclinic P2_1/c space group. Bi(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. As(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Bi(1) and one As(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Bi(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Bi(1) and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Bi(1) and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_BiAsO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.174
_cell_length_b   6.745
_cell_length_c   8.293
_cell_angle_alpha   53.294
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   321.677
_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
  Bi  Bi0  1  0.635  0.198  0.219  1.0
  Bi  Bi1  1  0.135  0.802  0.281  1.0
  Bi  Bi2  1  0.365  0.802  0.781  1.0
  Bi  Bi3  1  0.865  0.198  0.719  1.0
  As  As4  1  0.662  0.688  0.201  1.0
  As  As5  1  0.162  0.312  0.299  1.0
  As  As6  1  0.338  0.312  0.799  1.0
  As  As7  1  0.838  0.688  0.701  1.0
  O  O8  1  0.708  0.387  0.391  1.0
  O  O9  1  0.208  0.613  0.109  1.0
  O  O10  1  0.292  0.613  0.609  1.0
  O  O11  1  0.792  0.387  0.891  1.0
  O  O12  1  0.603  0.640  0.025  1.0
  O  O13  1  0.103  0.360  0.475  1.0
  O  O14  1  0.397  0.360  0.975  1.0
  O  O15  1  0.897  0.640  0.525  1.0
  O  O16  1  0.000  0.838  0.737  1.0
  O  O17  1  0.500  0.162  0.763  1.0
  O  O18  1  1.000  0.162  0.263  1.0
  O  O19  1  0.500  0.838  0.237  1.0
  O  O20  1  0.644  0.870  0.610  1.0
  O  O21  1  0.144  0.130  0.890  1.0
  O  O22  1  0.356  0.130  0.390  1.0
  O  O23  1  0.856  0.870  0.110  1.0
[/CIF]
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