The structure described by Zn2PbAs2O10 crystallizes in the monoclinic C2/m space group. Zn(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form ZnO6 octahedra that share corners with two equivalent Pb(1)O6 octahedra, corners with four equivalent As(1)O4 tetrahedra, and edges with two equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 63°. Pb(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form PbO6 octahedra that share corners with four equivalent Zn(1)O6 octahedra and corners with six equivalent As(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 63°. As(1) is bonded to one O(2), one O(4), and two equivalent O(3) atoms to form AsO4 tetrahedra that share corners with three equivalent Pb(1)O6 octahedra and corners with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-67°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Zn(1) and one O(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Pb(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Zn(1), one Pb(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to two equivalent Zn(1) and one As(1) atom. is represented by the CIF file [CIF]
data_Zn2As2PbO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.435
_cell_length_b   5.435
_cell_length_c   7.651
_cell_angle_alpha   73.392
_cell_angle_beta   73.392
_cell_angle_gamma   76.246
_symmetry_Int_Tables_number   1
_cell_volume   204.517
_cell_formula_units_Z   1
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
  Zn  Zn0  1  0.500  0.000  0.500  1.0
  Zn  Zn1  1  0.000  0.500  0.500  1.0
  As  As2  1  0.568  0.568  0.224  1.0
  As  As3  1  0.432  0.432  0.776  1.0
  Pb  Pb4  1  0.000  0.000  0.000  1.0
  O  O5  1  0.921  0.921  0.550  1.0
  O  O6  1  0.079  0.079  0.450  1.0
  O  O7  1  0.285  0.285  0.997  1.0
  O  O8  1  0.715  0.715  0.003  1.0
  O  O9  1  0.656  0.231  0.259  1.0
  O  O10  1  0.344  0.769  0.741  1.0
  O  O11  1  0.769  0.344  0.741  1.0
  O  O12  1  0.231  0.656  0.259  1.0
  O  O13  1  0.678  0.678  0.380  1.0
  O  O14  1  0.322  0.322  0.620  1.0
[/CIF]
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The structure described by Zn2PbAs2O10 crystallizes in the monoclinic C2/m space group. Zn(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form ZnO6 octahedra that share corners with two equivalent Pb(1)O6 octahedra, corners with four equivalent As(1)O4 tetrahedra, and edges with two equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles are 63°. Pb(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form PbO6 octahedra that share corners with four equivalent Zn(1)O6 octahedra and corners with six equivalent As(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 63°. As(1) is bonded to one O(2), one O(4), and two equivalent O(3) atoms to form AsO4 tetrahedra that share corners with three equivalent Pb(1)O6 octahedra and corners with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-67°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Zn(1) and one O(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Pb(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Zn(1), one Pb(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to two equivalent Zn(1) and one As(1) atom. is represented by the CIF file [CIF]
data_Zn2As2PbO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.435
_cell_length_b   5.435
_cell_length_c   7.651
_cell_angle_alpha   73.392
_cell_angle_beta   73.392
_cell_angle_gamma   76.246
_symmetry_Int_Tables_number   1
_cell_volume   204.517
_cell_formula_units_Z   1
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
  Zn  Zn0  1  0.500  0.000  0.500  1.0
  Zn  Zn1  1  0.000  0.500  0.500  1.0
  As  As2  1  0.568  0.568  0.224  1.0
  As  As3  1  0.432  0.432  0.776  1.0
  Pb  Pb4  1  0.000  0.000  0.000  1.0
  O  O5  1  0.921  0.921  0.550  1.0
  O  O6  1  0.079  0.079  0.450  1.0
  O  O7  1  0.285  0.285  0.997  1.0
  O  O8  1  0.715  0.715  0.003  1.0
  O  O9  1  0.656  0.231  0.259  1.0
  O  O10  1  0.344  0.769  0.741  1.0
  O  O11  1  0.769  0.344  0.741  1.0
  O  O12  1  0.231  0.656  0.259  1.0
  O  O13  1  0.678  0.678  0.380  1.0
  O  O14  1  0.322  0.322  0.620  1.0
[/CIF]
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