The material structure described by Hg2PCl2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a linear geometry to two equivalent P(1) atoms. In the second Hg site, Hg(2) is bonded in a distorted rectangular see-saw-like geometry to one P(1), one Cl(2), and two equivalent Cl(1) atoms. P(1) is bonded to one Hg(2), two equivalent Hg(1), and one P(1) atom to form corner-sharing PHg3P tetrahedra. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a water-like geometry to two equivalent Hg(2) atoms. In the second Cl site, Cl(2) is bonded in a single-bond geometry to one Hg(2) atom. is represented by the CIF file [CIF]
data_Hg2PCl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.035
_cell_length_b   6.035
_cell_length_c   7.747
_cell_angle_alpha   70.764
_cell_angle_beta   70.764
_cell_angle_gamma   85.151
_symmetry_Int_Tables_number   1
_cell_volume   251.441
_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
  Hg  Hg0  1  0.500  0.000  0.000  1.0
  Hg  Hg1  1  0.000  0.500  0.000  1.0
  Hg  Hg2  1  0.707  0.707  0.572  1.0
  Hg  Hg3  1  0.293  0.293  0.428  1.0
  P  P4  1  0.638  0.638  0.916  1.0
  P  P5  1  0.362  0.362  0.084  1.0
  Cl  Cl6  1  0.723  0.277  0.500  1.0
  Cl  Cl7  1  0.277  0.723  0.500  1.0
  Cl  Cl8  1  0.108  0.108  0.779  1.0
  Cl  Cl9  1  0.892  0.892  0.221  1.0
[/CIF]
.
The material structure described by Hg2PCl2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a linear geometry to two equivalent P(1) atoms. In the second Hg site, Hg(2) is bonded in a distorted rectangular see-saw-like geometry to one P(1), one Cl(2), and two equivalent Cl(1) atoms. P(1) is bonded to one Hg(2), two equivalent Hg(1), and one P(1) atom to form corner-sharing PHg3P tetrahedra. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a water-like geometry to two equivalent Hg(2) atoms. In the second Cl site, Cl(2) is bonded in a single-bond geometry to one Hg(2) atom. is represented by the CIF file [CIF]
data_Hg2PCl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.035
_cell_length_b   6.035
_cell_length_c   7.747
_cell_angle_alpha   70.764
_cell_angle_beta   70.764
_cell_angle_gamma   85.151
_symmetry_Int_Tables_number   1
_cell_volume   251.441
_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
  Hg  Hg0  1  0.500  0.000  0.000  1.0
  Hg  Hg1  1  0.000  0.500  0.000  1.0
  Hg  Hg2  1  0.707  0.707  0.572  1.0
  Hg  Hg3  1  0.293  0.293  0.428  1.0
  P  P4  1  0.638  0.638  0.916  1.0
  P  P5  1  0.362  0.362  0.084  1.0
  Cl  Cl6  1  0.723  0.277  0.500  1.0
  Cl  Cl7  1  0.277  0.723  0.500  1.0
  Cl  Cl8  1  0.108  0.108  0.779  1.0
  Cl  Cl9  1  0.892  0.892  0.221  1.0
[/CIF]
.