The crystal structure described by PbHAsO4 crystallizes in the monoclinic Pc space group. Pb(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. As(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. H(1) is bonded in a linear geometry to 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 Pb(1) and one As(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Pb(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted water-like geometry to one As(1) and one H(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one As(1) and one H(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_AsHPbO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.880
_cell_length_b   4.989
_cell_length_c   5.955
_cell_angle_alpha   84.521
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   203.457
_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  0.794  0.507  0.258  1.0
  As  As1  1  0.206  0.507  0.758  1.0
  H  H2  1  0.525  0.481  0.012  1.0
  H  H3  1  0.475  0.481  0.512  1.0
  Pb  Pb4  1  0.198  0.997  0.245  1.0
  Pb  Pb5  1  0.802  0.997  0.745  1.0
  O  O6  1  0.931  0.248  0.388  1.0
  O  O7  1  0.932  0.750  0.106  1.0
  O  O8  1  0.068  0.750  0.606  1.0
  O  O9  1  0.069  0.248  0.888  1.0
  O  O10  1  0.649  0.361  0.057  1.0
  O  O11  1  0.645  0.641  0.448  1.0
  O  O12  1  0.355  0.641  0.948  1.0
  O  O13  1  0.351  0.361  0.557  1.0
[/CIF]
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The crystal structure described by PbHAsO4 crystallizes in the monoclinic Pc space group. Pb(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. As(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. H(1) is bonded in a linear geometry to 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 Pb(1) and one As(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Pb(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted water-like geometry to one As(1) and one H(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one As(1) and one H(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_AsHPbO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.880
_cell_length_b   4.989
_cell_length_c   5.955
_cell_angle_alpha   84.521
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   203.457
_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  0.794  0.507  0.258  1.0
  As  As1  1  0.206  0.507  0.758  1.0
  H  H2  1  0.525  0.481  0.012  1.0
  H  H3  1  0.475  0.481  0.512  1.0
  Pb  Pb4  1  0.198  0.997  0.245  1.0
  Pb  Pb5  1  0.802  0.997  0.745  1.0
  O  O6  1  0.931  0.248  0.388  1.0
  O  O7  1  0.932  0.750  0.106  1.0
  O  O8  1  0.068  0.750  0.606  1.0
  O  O9  1  0.069  0.248  0.888  1.0
  O  O10  1  0.649  0.361  0.057  1.0
  O  O11  1  0.645  0.641  0.448  1.0
  O  O12  1  0.355  0.641  0.948  1.0
  O  O13  1  0.351  0.361  0.557  1.0
[/CIF]
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