The crystal structure described by PbHAsO4 crystallizes in the monoclinic P2/c space group. Pb(1) is bonded in a 4-coordinate geometry to four equivalent O(2) atoms. As(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. H(1) is bonded in a linear geometry to two equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one As(1) and one H(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Pb(1) and one As(1) atom. is represented by the CIF file [CIF]
data_AsHPbO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.790
_cell_length_b   4.973
_cell_length_c   5.936
_cell_angle_alpha   84.898
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   199.645
_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
  As  As0  1  0.208  0.500  0.750  1.0
  As  As1  1  0.792  0.500  0.250  1.0
  H  H2  1  0.500  0.500  0.500  1.0
  H  H3  1  0.500  0.500  0.000  1.0
  Pb  Pb4  1  0.797  0.000  0.750  1.0
  Pb  Pb5  1  0.203  0.000  0.250  1.0
  O  O6  1  0.358  0.360  0.554  1.0
  O  O7  1  0.358  0.640  0.946  1.0
  O  O8  1  0.642  0.640  0.446  1.0
  O  O9  1  0.642  0.360  0.054  1.0
  O  O10  1  0.070  0.248  0.890  1.0
  O  O11  1  0.070  0.752  0.610  1.0
  O  O12  1  0.930  0.752  0.110  1.0
  O  O13  1  0.930  0.248  0.390  1.0
[/CIF]
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The crystal structure described by PbHAsO4 crystallizes in the monoclinic P2/c space group. Pb(1) is bonded in a 4-coordinate geometry to four equivalent O(2) atoms. As(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. H(1) is bonded in a linear geometry to two equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one As(1) and one H(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Pb(1) and one As(1) atom. is represented by the CIF file [CIF]
data_AsHPbO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.790
_cell_length_b   4.973
_cell_length_c   5.936
_cell_angle_alpha   84.898
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   199.645
_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
  As  As0  1  0.208  0.500  0.750  1.0
  As  As1  1  0.792  0.500  0.250  1.0
  H  H2  1  0.500  0.500  0.500  1.0
  H  H3  1  0.500  0.500  0.000  1.0
  Pb  Pb4  1  0.797  0.000  0.750  1.0
  Pb  Pb5  1  0.203  0.000  0.250  1.0
  O  O6  1  0.358  0.360  0.554  1.0
  O  O7  1  0.358  0.640  0.946  1.0
  O  O8  1  0.642  0.640  0.446  1.0
  O  O9  1  0.642  0.360  0.054  1.0
  O  O10  1  0.070  0.248  0.890  1.0
  O  O11  1  0.070  0.752  0.610  1.0
  O  O12  1  0.930  0.752  0.110  1.0
  O  O13  1  0.930  0.248  0.390  1.0
[/CIF]
.