The compound described by YbPb3Te4 is Caswellsilverite-like structured and crystallizes in the monoclinic C2/m space group. Yb(1) is bonded to two equivalent Te(2) and four equivalent Te(1) atoms to form YbTe6 octahedra that share corners with six equivalent Pb(1)Te6 octahedra, edges with two equivalent Yb(1)Te6 octahedra, edges with four equivalent Pb(2)Te6 octahedra, and edges with six equivalent Pb(1)Te6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to three equivalent Te(1) and three equivalent Te(2) atoms to form PbTe6 octahedra that share corners with three equivalent Yb(1)Te6 octahedra, corners with three equivalent Pb(2)Te6 octahedra, edges with three equivalent Yb(1)Te6 octahedra, edges with three equivalent Pb(2)Te6 octahedra, and edges with six equivalent Pb(1)Te6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second Pb site, Pb(2) is bonded to two equivalent Te(1) and four equivalent Te(2) atoms to form PbTe6 octahedra that share corners with six equivalent Pb(1)Te6 octahedra, edges with two equivalent Pb(2)Te6 octahedra, edges with four equivalent Yb(1)Te6 octahedra, and edges with six equivalent Pb(1)Te6 octahedra. The corner-sharing octahedral tilt angles range from 2-3°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Yb(1), one Pb(2), and three equivalent Pb(1) atoms to form TeYb2Pb4 octahedra that share corners with three equivalent Te(1)Yb2Pb4 octahedra, corners with three equivalent Te(2)YbPb5 octahedra, edges with five equivalent Te(1)Yb2Pb4 octahedra, and edges with seven equivalent Te(2)YbPb5 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second Te site, Te(2) is bonded to one Yb(1), two equivalent Pb(2), and three equivalent Pb(1) atoms to form TeYbPb5 octahedra that share corners with three equivalent Te(1)Yb2Pb4 octahedra, corners with three equivalent Te(2)YbPb5 octahedra, edges with five equivalent Te(2)YbPb5 octahedra, and edges with seven equivalent Te(1)Yb2Pb4 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. is represented by the CIF card [CIF]
data_YbTe4Pb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.001
_cell_length_b   8.001
_cell_length_c   7.998
_cell_angle_alpha   80.317
_cell_angle_beta   80.317
_cell_angle_gamma   33.516
_symmetry_Int_Tables_number   1
_cell_volume   278.326
_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
  Yb  Yb0  1  0.000  0.000  0.000  1.0
  Te  Te1  1  0.621  0.621  0.121  1.0
  Te  Te2  1  0.877  0.877  0.369  1.0
  Te  Te3  1  0.123  0.123  0.631  1.0
  Te  Te4  1  0.379  0.379  0.879  1.0
  Pb  Pb5  1  0.250  0.250  0.250  1.0
  Pb  Pb6  1  0.500  0.500  0.500  1.0
  Pb  Pb7  1  0.750  0.750  0.750  1.0
[/CIF]
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The compound described by YbPb3Te4 is Caswellsilverite-like structured and crystallizes in the monoclinic C2/m space group. Yb(1) is bonded to two equivalent Te(2) and four equivalent Te(1) atoms to form YbTe6 octahedra that share corners with six equivalent Pb(1)Te6 octahedra, edges with two equivalent Yb(1)Te6 octahedra, edges with four equivalent Pb(2)Te6 octahedra, and edges with six equivalent Pb(1)Te6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to three equivalent Te(1) and three equivalent Te(2) atoms to form PbTe6 octahedra that share corners with three equivalent Yb(1)Te6 octahedra, corners with three equivalent Pb(2)Te6 octahedra, edges with three equivalent Yb(1)Te6 octahedra, edges with three equivalent Pb(2)Te6 octahedra, and edges with six equivalent Pb(1)Te6 octahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second Pb site, Pb(2) is bonded to two equivalent Te(1) and four equivalent Te(2) atoms to form PbTe6 octahedra that share corners with six equivalent Pb(1)Te6 octahedra, edges with two equivalent Pb(2)Te6 octahedra, edges with four equivalent Yb(1)Te6 octahedra, and edges with six equivalent Pb(1)Te6 octahedra. The corner-sharing octahedral tilt angles range from 2-3°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Yb(1), one Pb(2), and three equivalent Pb(1) atoms to form TeYb2Pb4 octahedra that share corners with three equivalent Te(1)Yb2Pb4 octahedra, corners with three equivalent Te(2)YbPb5 octahedra, edges with five equivalent Te(1)Yb2Pb4 octahedra, and edges with seven equivalent Te(2)YbPb5 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. In the second Te site, Te(2) is bonded to one Yb(1), two equivalent Pb(2), and three equivalent Pb(1) atoms to form TeYbPb5 octahedra that share corners with three equivalent Te(1)Yb2Pb4 octahedra, corners with three equivalent Te(2)YbPb5 octahedra, edges with five equivalent Te(2)YbPb5 octahedra, and edges with seven equivalent Te(1)Yb2Pb4 octahedra. The corner-sharing octahedral tilt angles range from 0-1°. is represented by the CIF card [CIF]
data_YbTe4Pb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.001
_cell_length_b   8.001
_cell_length_c   7.998
_cell_angle_alpha   80.317
_cell_angle_beta   80.317
_cell_angle_gamma   33.516
_symmetry_Int_Tables_number   1
_cell_volume   278.326
_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
  Yb  Yb0  1  0.000  0.000  0.000  1.0
  Te  Te1  1  0.621  0.621  0.121  1.0
  Te  Te2  1  0.877  0.877  0.369  1.0
  Te  Te3  1  0.123  0.123  0.631  1.0
  Te  Te4  1  0.379  0.379  0.879  1.0
  Pb  Pb5  1  0.250  0.250  0.250  1.0
  Pb  Pb6  1  0.500  0.500  0.500  1.0
  Pb  Pb7  1  0.750  0.750  0.750  1.0
[/CIF]
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