The material structure described by Cd2AsCl2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one As(1), one Cl(1), and three equivalent Cl(2) atoms to form distorted CdAsCl4 trigonal bipyramids that share  a cornercorner with one As(1)Cd3As tetrahedra, corners with four equivalent Cd(1)AsCl4 trigonal bipyramids, corners with four equivalent Cd(2)As2Cl2 trigonal pyramids,  an edgeedge with one Cd(1)AsCl4 trigonal bipyramid, and  an edgeedge with one Cd(2)As2Cl2 trigonal pyramid. In the second Cd site, Cd(2) is bonded to two equivalent As(1), one Cl(1), and one Cl(2) atom to form distorted CdAs2Cl2 trigonal pyramids that share corners with two equivalent As(1)Cd3As tetrahedra, corners with four equivalent Cd(1)AsCl4 trigonal bipyramids, corners with two equivalent Cd(2)As2Cl2 trigonal pyramids, and  an edgeedge with one Cd(1)AsCl4 trigonal bipyramid. As(1) is bonded to one Cd(1), two equivalent Cd(2), and one As(1) atom to form AsCd3As tetrahedra that share corners with two equivalent As(1)Cd3As tetrahedra, corners with five equivalent Cl(2)Cd4 tetrahedra,  a cornercorner with one Cd(1)AsCl4 trigonal bipyramid, and corners with two equivalent Cd(2)As2Cl2 trigonal pyramids. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a water-like geometry to one Cd(1) and one Cd(2) atom. In the second Cl site, Cl(2) is bonded to one Cd(2) and three equivalent Cd(1) atoms to form distorted ClCd4 tetrahedra that share corners with four equivalent Cl(2)Cd4 tetrahedra, corners with five equivalent As(1)Cd3As tetrahedra, and  an edgeedge with one Cl(2)Cd4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cd2AsCl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.373
_cell_length_b   8.002
_cell_length_c   8.487
_cell_angle_alpha   59.747
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   549.844
_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
  Cd  Cd0  1  0.920  0.561  0.748  1.0
  Cd  Cd1  1  0.420  0.439  0.752  1.0
  Cd  Cd2  1  0.080  0.439  0.252  1.0
  Cd  Cd3  1  0.580  0.561  0.248  1.0
  Cd  Cd4  1  0.702  0.045  0.285  1.0
  Cd  Cd5  1  0.298  0.955  0.715  1.0
  Cd  Cd6  1  0.798  0.045  0.785  1.0
  Cd  Cd7  1  0.202  0.955  0.215  1.0
  As  As8  1  0.119  0.069  0.441  1.0
  As  As9  1  0.381  0.069  0.941  1.0
  As  As10  1  0.619  0.931  0.059  1.0
  As  As11  1  0.881  0.931  0.559  1.0
  Cl  Cl12  1  0.021  0.246  0.804  1.0
  Cl  Cl13  1  0.521  0.754  0.696  1.0
  Cl  Cl14  1  0.979  0.754  0.196  1.0
  Cl  Cl15  1  0.479  0.246  0.304  1.0
  Cl  Cl16  1  0.690  0.421  0.582  1.0
  Cl  Cl17  1  0.190  0.579  0.918  1.0
  Cl  Cl18  1  0.310  0.579  0.418  1.0
  Cl  Cl19  1  0.810  0.421  0.082  1.0
[/CIF]
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The material structure described by Cd2AsCl2 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one As(1), one Cl(1), and three equivalent Cl(2) atoms to form distorted CdAsCl4 trigonal bipyramids that share  a cornercorner with one As(1)Cd3As tetrahedra, corners with four equivalent Cd(1)AsCl4 trigonal bipyramids, corners with four equivalent Cd(2)As2Cl2 trigonal pyramids,  an edgeedge with one Cd(1)AsCl4 trigonal bipyramid, and  an edgeedge with one Cd(2)As2Cl2 trigonal pyramid. In the second Cd site, Cd(2) is bonded to two equivalent As(1), one Cl(1), and one Cl(2) atom to form distorted CdAs2Cl2 trigonal pyramids that share corners with two equivalent As(1)Cd3As tetrahedra, corners with four equivalent Cd(1)AsCl4 trigonal bipyramids, corners with two equivalent Cd(2)As2Cl2 trigonal pyramids, and  an edgeedge with one Cd(1)AsCl4 trigonal bipyramid. As(1) is bonded to one Cd(1), two equivalent Cd(2), and one As(1) atom to form AsCd3As tetrahedra that share corners with two equivalent As(1)Cd3As tetrahedra, corners with five equivalent Cl(2)Cd4 tetrahedra,  a cornercorner with one Cd(1)AsCl4 trigonal bipyramid, and corners with two equivalent Cd(2)As2Cl2 trigonal pyramids. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a water-like geometry to one Cd(1) and one Cd(2) atom. In the second Cl site, Cl(2) is bonded to one Cd(2) and three equivalent Cd(1) atoms to form distorted ClCd4 tetrahedra that share corners with four equivalent Cl(2)Cd4 tetrahedra, corners with five equivalent As(1)Cd3As tetrahedra, and  an edgeedge with one Cl(2)Cd4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cd2AsCl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.373
_cell_length_b   8.002
_cell_length_c   8.487
_cell_angle_alpha   59.747
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   549.844
_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
  Cd  Cd0  1  0.920  0.561  0.748  1.0
  Cd  Cd1  1  0.420  0.439  0.752  1.0
  Cd  Cd2  1  0.080  0.439  0.252  1.0
  Cd  Cd3  1  0.580  0.561  0.248  1.0
  Cd  Cd4  1  0.702  0.045  0.285  1.0
  Cd  Cd5  1  0.298  0.955  0.715  1.0
  Cd  Cd6  1  0.798  0.045  0.785  1.0
  Cd  Cd7  1  0.202  0.955  0.215  1.0
  As  As8  1  0.119  0.069  0.441  1.0
  As  As9  1  0.381  0.069  0.941  1.0
  As  As10  1  0.619  0.931  0.059  1.0
  As  As11  1  0.881  0.931  0.559  1.0
  Cl  Cl12  1  0.021  0.246  0.804  1.0
  Cl  Cl13  1  0.521  0.754  0.696  1.0
  Cl  Cl14  1  0.979  0.754  0.196  1.0
  Cl  Cl15  1  0.479  0.246  0.304  1.0
  Cl  Cl16  1  0.690  0.421  0.582  1.0
  Cl  Cl17  1  0.190  0.579  0.918  1.0
  Cl  Cl18  1  0.310  0.579  0.418  1.0
  Cl  Cl19  1  0.810  0.421  0.082  1.0
[/CIF]
.