The material structure described by EuCd3S4 is Enargite-like structured and crystallizes in the trigonal R3m space group. Eu(1) is bonded to one S(4) and three equivalent S(3) atoms to form EuS4 tetrahedra that share corners with three equivalent Cd(1)S4 tetrahedra, corners with three equivalent Cd(3)S4 tetrahedra, and corners with six equivalent Eu(1)S4 tetrahedra. There are three inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one S(1) and three equivalent S(4) atoms to form CdS4 tetrahedra that share corners with three equivalent Eu(1)S4 tetrahedra, corners with three equivalent Cd(2)S4 tetrahedra, and corners with six equivalent Cd(1)S4 tetrahedra. In the second Cd site, Cd(2) is bonded to one S(2) and three equivalent S(1) atoms to form corner-sharing CdS4 tetrahedra. In the third Cd site, Cd(3) is bonded to one S(3) and three equivalent S(2) atoms to form CdS4 tetrahedra that share corners with three equivalent Eu(1)S4 tetrahedra, corners with three equivalent Cd(2)S4 tetrahedra, and corners with six equivalent Cd(3)S4 tetrahedra. There are four inequivalent S sites. In the first S site, S(1) is bonded to one Cd(1) and three equivalent Cd(2) atoms to form SCd4 tetrahedra that share corners with three equivalent S(2)Cd4 tetrahedra, corners with three equivalent S(4)EuCd3 tetrahedra, and corners with six equivalent S(1)Cd4 tetrahedra. In the second S site, S(2) is bonded to one Cd(2) and three equivalent Cd(3) atoms to form SCd4 tetrahedra that share corners with three equivalent S(1)Cd4 tetrahedra, corners with three equivalent S(3)Eu3Cd tetrahedra, and corners with six equivalent S(2)Cd4 tetrahedra. In the third S site, S(3) is bonded to three equivalent Eu(1) and one Cd(3) atom to form SEu3Cd tetrahedra that share corners with three equivalent S(2)Cd4 tetrahedra, corners with three equivalent S(4)EuCd3 tetrahedra, and corners with six equivalent S(3)Eu3Cd tetrahedra. In the fourth S site, S(4) is bonded to one Eu(1) and three equivalent Cd(1) atoms to form SEuCd3 tetrahedra that share corners with three equivalent S(1)Cd4 tetrahedra, corners with three equivalent S(3)Eu3Cd tetrahedra, and corners with six equivalent S(4)EuCd3 tetrahedra. is represented by the CIF file [CIF]
data_EuCd3S4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.315
_cell_length_b   4.315
_cell_length_c   14.258
_cell_angle_alpha   81.296
_cell_angle_beta   98.704
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   226.415
_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  0.251  0.749  0.753  1.0
  Cd  Cd1  1  0.003  0.997  0.010  1.0
  Cd  Cd2  1  0.750  0.250  0.249  1.0
  Cd  Cd3  1  0.496  0.504  0.488  1.0
  S  S4  1  0.064  0.936  0.193  1.0
  S  S5  1  0.811  0.189  0.433  1.0
  S  S6  1  0.557  0.443  0.672  1.0
  S  S7  1  0.318  0.682  0.953  1.0
[/CIF]
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The material structure described by EuCd3S4 is Enargite-like structured and crystallizes in the trigonal R3m space group. Eu(1) is bonded to one S(4) and three equivalent S(3) atoms to form EuS4 tetrahedra that share corners with three equivalent Cd(1)S4 tetrahedra, corners with three equivalent Cd(3)S4 tetrahedra, and corners with six equivalent Eu(1)S4 tetrahedra. There are three inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one S(1) and three equivalent S(4) atoms to form CdS4 tetrahedra that share corners with three equivalent Eu(1)S4 tetrahedra, corners with three equivalent Cd(2)S4 tetrahedra, and corners with six equivalent Cd(1)S4 tetrahedra. In the second Cd site, Cd(2) is bonded to one S(2) and three equivalent S(1) atoms to form corner-sharing CdS4 tetrahedra. In the third Cd site, Cd(3) is bonded to one S(3) and three equivalent S(2) atoms to form CdS4 tetrahedra that share corners with three equivalent Eu(1)S4 tetrahedra, corners with three equivalent Cd(2)S4 tetrahedra, and corners with six equivalent Cd(3)S4 tetrahedra. There are four inequivalent S sites. In the first S site, S(1) is bonded to one Cd(1) and three equivalent Cd(2) atoms to form SCd4 tetrahedra that share corners with three equivalent S(2)Cd4 tetrahedra, corners with three equivalent S(4)EuCd3 tetrahedra, and corners with six equivalent S(1)Cd4 tetrahedra. In the second S site, S(2) is bonded to one Cd(2) and three equivalent Cd(3) atoms to form SCd4 tetrahedra that share corners with three equivalent S(1)Cd4 tetrahedra, corners with three equivalent S(3)Eu3Cd tetrahedra, and corners with six equivalent S(2)Cd4 tetrahedra. In the third S site, S(3) is bonded to three equivalent Eu(1) and one Cd(3) atom to form SEu3Cd tetrahedra that share corners with three equivalent S(2)Cd4 tetrahedra, corners with three equivalent S(4)EuCd3 tetrahedra, and corners with six equivalent S(3)Eu3Cd tetrahedra. In the fourth S site, S(4) is bonded to one Eu(1) and three equivalent Cd(1) atoms to form SEuCd3 tetrahedra that share corners with three equivalent S(1)Cd4 tetrahedra, corners with three equivalent S(3)Eu3Cd tetrahedra, and corners with six equivalent S(4)EuCd3 tetrahedra. is represented by the CIF file [CIF]
data_EuCd3S4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.315
_cell_length_b   4.315
_cell_length_c   14.258
_cell_angle_alpha   81.296
_cell_angle_beta   98.704
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   226.415
_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  0.251  0.749  0.753  1.0
  Cd  Cd1  1  0.003  0.997  0.010  1.0
  Cd  Cd2  1  0.750  0.250  0.249  1.0
  Cd  Cd3  1  0.496  0.504  0.488  1.0
  S  S4  1  0.064  0.936  0.193  1.0
  S  S5  1  0.811  0.189  0.433  1.0
  S  S6  1  0.557  0.443  0.672  1.0
  S  S7  1  0.318  0.682  0.953  1.0
[/CIF]
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