The material described by EuPbTe2 is Caswellsilverite-like structured and crystallizes in the tetragonal P4/mmm space group. Eu(1) is bonded to two equivalent Te(1) and four equivalent Te(2) atoms to form EuTe6 octahedra that share corners with six equivalent Eu(1)Te6 octahedra, edges with four equivalent Eu(1)Te6 octahedra, and edges with eight equivalent Pb(1)Te6 octahedra. The corner-sharing octahedra are not tilted. Pb(1) is bonded to two equivalent Te(2) and four equivalent Te(1) atoms to form PbTe6 octahedra that share corners with six equivalent Pb(1)Te6 octahedra, edges with four equivalent Pb(1)Te6 octahedra, and edges with eight equivalent Eu(1)Te6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Eu(1) and four equivalent Pb(1) atoms to form TeEu2Pb4 octahedra that share corners with six equivalent Te(1)Eu2Pb4 octahedra, edges with four equivalent Te(1)Eu2Pb4 octahedra, and edges with eight equivalent Te(2)Eu4Pb2 octahedra. The corner-sharing octahedra are not tilted. In the second Te site, Te(2) is bonded to four equivalent Eu(1) and two equivalent Pb(1) atoms to form TeEu4Pb2 octahedra that share corners with six equivalent Te(2)Eu4Pb2 octahedra, edges with four equivalent Te(2)Eu4Pb2 octahedra, and edges with eight equivalent Te(1)Eu2Pb4 octahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_EuTe2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.640
_cell_length_b   4.640
_cell_length_c   6.569
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   141.457
_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
  Eu  Eu0  1  0.000  0.000  0.000  1.0
  Te  Te1  1  0.000  0.000  0.500  1.0
  Te  Te2  1  0.500  0.500  0.000  1.0
  Pb  Pb3  1  0.500  0.500  0.500  1.0
[/CIF]
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The material described by EuPbTe2 is Caswellsilverite-like structured and crystallizes in the tetragonal P4/mmm space group. Eu(1) is bonded to two equivalent Te(1) and four equivalent Te(2) atoms to form EuTe6 octahedra that share corners with six equivalent Eu(1)Te6 octahedra, edges with four equivalent Eu(1)Te6 octahedra, and edges with eight equivalent Pb(1)Te6 octahedra. The corner-sharing octahedra are not tilted. Pb(1) is bonded to two equivalent Te(2) and four equivalent Te(1) atoms to form PbTe6 octahedra that share corners with six equivalent Pb(1)Te6 octahedra, edges with four equivalent Pb(1)Te6 octahedra, and edges with eight equivalent Eu(1)Te6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Eu(1) and four equivalent Pb(1) atoms to form TeEu2Pb4 octahedra that share corners with six equivalent Te(1)Eu2Pb4 octahedra, edges with four equivalent Te(1)Eu2Pb4 octahedra, and edges with eight equivalent Te(2)Eu4Pb2 octahedra. The corner-sharing octahedra are not tilted. In the second Te site, Te(2) is bonded to four equivalent Eu(1) and two equivalent Pb(1) atoms to form TeEu4Pb2 octahedra that share corners with six equivalent Te(2)Eu4Pb2 octahedra, edges with four equivalent Te(2)Eu4Pb2 octahedra, and edges with eight equivalent Te(1)Eu2Pb4 octahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_EuTe2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.640
_cell_length_b   4.640
_cell_length_c   6.569
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   141.457
_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
  Eu  Eu0  1  0.000  0.000  0.000  1.0
  Te  Te1  1  0.000  0.000  0.500  1.0
  Te  Te2  1  0.500  0.500  0.000  1.0
  Pb  Pb3  1  0.500  0.500  0.500  1.0
[/CIF]
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