The crystal structure described by EuGeS3 is Esseneite-derived structured and crystallizes in the triclinic P-1 space group. There are three inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to one S(3), one S(4), one S(7), one S(8), two equivalent S(1), and two equivalent S(5) atoms. In the second Eu site, Eu(2) is bonded to one S(1), one S(4), one S(6), one S(8), and two equivalent S(9) atoms to form EuS6 octahedra that share  a cornercorner with one Ge(2)S4 tetrahedra, corners with two equivalent Ge(1)S4 tetrahedra, corners with three equivalent Ge(3)S4 tetrahedra, and  an edgeedge with one Eu(2)S6 octahedra. In the third Eu site, Eu(3) is bonded in a 7-coordinate geometry to one S(2), one S(4), one S(5), one S(8), one S(9), and two equivalent S(6) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one S(2), one S(3), one S(6), and one S(8) atom to form GeS4 tetrahedra that share corners with two equivalent Eu(2)S6 octahedra,  a cornercorner with one Ge(2)S4 tetrahedra, and  a cornercorner with one Ge(3)S4 tetrahedra. The corner-sharing octahedral tilt angles range from 63-70°. In the second Ge site, Ge(2) is bonded to one S(1), one S(3), one S(5), and one S(7) atom to form GeS4 tetrahedra that share  a cornercorner with one Eu(2)S6 octahedra,  a cornercorner with one Ge(1)S4 tetrahedra, and  a cornercorner with one Ge(3)S4 tetrahedra. The corner-sharing octahedral tilt angles are 65°. In the third Ge site, Ge(3) is bonded to one S(2), one S(4), one S(7), and one S(9) atom to form GeS4 tetrahedra that share corners with three equivalent Eu(2)S6 octahedra,  a cornercorner with one Ge(1)S4 tetrahedra, and  a cornercorner with one Ge(2)S4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-64°. There are nine inequivalent S sites. In the first S site, S(1) is bonded to one Eu(2), two equivalent Eu(1), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing SEu3Ge tetrahedra. In the second S site, S(2) is bonded in a 3-coordinate geometry to one Eu(3), one Ge(1), and one Ge(3) atom. In the third S site, S(3) is bonded in a distorted T-shaped geometry to one Eu(1), one Ge(1), and one Ge(2) atom. In the fourth S site, S(4) is bonded to one Eu(1), one Eu(2), one Eu(3), and one Ge(3) atom to form a mixture of distorted edge and corner-sharing SEu3Ge tetrahedra. In the fifth S site, S(5) is bonded to one Eu(3), two equivalent Eu(1), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing SEu3Ge tetrahedra. In the sixth S site, S(6) is bonded in a rectangular see-saw-like geometry to one Eu(2), two equivalent Eu(3), and one Ge(1) atom. In the seventh S site, S(7) is bonded in a 3-coordinate geometry to one Eu(1), one Ge(2), and one Ge(3) atom. In the eighth S site, S(8) is bonded to one Eu(1), one Eu(2), one Eu(3), and one Ge(1) atom to form a mixture of distorted edge and corner-sharing SEu3Ge tetrahedra. In the ninth S site, S(9) is bonded to one Eu(3), two equivalent Eu(2), and one Ge(3) atom to form a mixture of distorted edge and corner-sharing SEu3Ge tetrahedra. is represented by the CIF file [CIF]
data_EuGeS3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.416
_cell_length_b   8.486
_cell_length_c   11.770
_cell_angle_alpha   69.184
_cell_angle_beta   80.700
_cell_angle_gamma   75.427
_symmetry_Int_Tables_number   1
_cell_volume   758.009
_cell_formula_units_Z   6
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  0.753  0.740  0.500  1.0
  Eu  Eu1  1  0.572  0.946  0.815  1.0
  Eu  Eu2  1  0.247  0.260  0.500  1.0
  Eu  Eu3  1  0.109  0.740  0.136  1.0
  Eu  Eu4  1  0.891  0.260  0.864  1.0
  Eu  Eu5  1  0.428  0.054  0.185  1.0
  Ge  Ge6  1  0.093  0.841  0.803  1.0
  Ge  Ge7  1  0.770  0.276  0.471  1.0
  Ge  Ge8  1  0.907  0.159  0.197  1.0
  Ge  Ge9  1  0.230  0.724  0.529  1.0
  Ge  Ge10  1  0.445  0.482  0.813  1.0
  Ge  Ge11  1  0.555  0.518  0.187  1.0
  S  S12  1  0.391  0.907  0.458  1.0
  S  S13  1  0.216  0.579  0.919  1.0
  S  S14  1  0.995  0.181  0.360  1.0
  S  S15  1  0.646  0.622  0.767  1.0
  S  S16  1  0.118  0.655  0.403  1.0
  S  S17  1  0.880  0.888  0.929  1.0
  S  S18  1  0.360  0.462  0.646  1.0
  S  S19  1  0.005  0.819  0.640  1.0
  S  S20  1  0.640  0.538  0.354  1.0
  S  S21  1  0.120  0.112  0.071  1.0
  S  S22  1  0.609  0.093  0.542  1.0
  S  S23  1  0.225  0.049  0.764  1.0
  S  S24  1  0.545  0.217  0.923  1.0
  S  S25  1  0.455  0.783  0.077  1.0
  S  S26  1  0.784  0.421  0.081  1.0
  S  S27  1  0.775  0.951  0.236  1.0
  S  S28  1  0.882  0.345  0.597  1.0
  S  S29  1  0.354  0.378  0.233  1.0
[/CIF]
.
The crystal structure described by EuGeS3 is Esseneite-derived structured and crystallizes in the triclinic P-1 space group. There are three inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to one S(3), one S(4), one S(7), one S(8), two equivalent S(1), and two equivalent S(5) atoms. In the second Eu site, Eu(2) is bonded to one S(1), one S(4), one S(6), one S(8), and two equivalent S(9) atoms to form EuS6 octahedra that share  a cornercorner with one Ge(2)S4 tetrahedra, corners with two equivalent Ge(1)S4 tetrahedra, corners with three equivalent Ge(3)S4 tetrahedra, and  an edgeedge with one Eu(2)S6 octahedra. In the third Eu site, Eu(3) is bonded in a 7-coordinate geometry to one S(2), one S(4), one S(5), one S(8), one S(9), and two equivalent S(6) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one S(2), one S(3), one S(6), and one S(8) atom to form GeS4 tetrahedra that share corners with two equivalent Eu(2)S6 octahedra,  a cornercorner with one Ge(2)S4 tetrahedra, and  a cornercorner with one Ge(3)S4 tetrahedra. The corner-sharing octahedral tilt angles range from 63-70°. In the second Ge site, Ge(2) is bonded to one S(1), one S(3), one S(5), and one S(7) atom to form GeS4 tetrahedra that share  a cornercorner with one Eu(2)S6 octahedra,  a cornercorner with one Ge(1)S4 tetrahedra, and  a cornercorner with one Ge(3)S4 tetrahedra. The corner-sharing octahedral tilt angles are 65°. In the third Ge site, Ge(3) is bonded to one S(2), one S(4), one S(7), and one S(9) atom to form GeS4 tetrahedra that share corners with three equivalent Eu(2)S6 octahedra,  a cornercorner with one Ge(1)S4 tetrahedra, and  a cornercorner with one Ge(2)S4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-64°. There are nine inequivalent S sites. In the first S site, S(1) is bonded to one Eu(2), two equivalent Eu(1), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing SEu3Ge tetrahedra. In the second S site, S(2) is bonded in a 3-coordinate geometry to one Eu(3), one Ge(1), and one Ge(3) atom. In the third S site, S(3) is bonded in a distorted T-shaped geometry to one Eu(1), one Ge(1), and one Ge(2) atom. In the fourth S site, S(4) is bonded to one Eu(1), one Eu(2), one Eu(3), and one Ge(3) atom to form a mixture of distorted edge and corner-sharing SEu3Ge tetrahedra. In the fifth S site, S(5) is bonded to one Eu(3), two equivalent Eu(1), and one Ge(2) atom to form a mixture of distorted edge and corner-sharing SEu3Ge tetrahedra. In the sixth S site, S(6) is bonded in a rectangular see-saw-like geometry to one Eu(2), two equivalent Eu(3), and one Ge(1) atom. In the seventh S site, S(7) is bonded in a 3-coordinate geometry to one Eu(1), one Ge(2), and one Ge(3) atom. In the eighth S site, S(8) is bonded to one Eu(1), one Eu(2), one Eu(3), and one Ge(1) atom to form a mixture of distorted edge and corner-sharing SEu3Ge tetrahedra. In the ninth S site, S(9) is bonded to one Eu(3), two equivalent Eu(2), and one Ge(3) atom to form a mixture of distorted edge and corner-sharing SEu3Ge tetrahedra. is represented by the CIF file [CIF]
data_EuGeS3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.416
_cell_length_b   8.486
_cell_length_c   11.770
_cell_angle_alpha   69.184
_cell_angle_beta   80.700
_cell_angle_gamma   75.427
_symmetry_Int_Tables_number   1
_cell_volume   758.009
_cell_formula_units_Z   6
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  0.753  0.740  0.500  1.0
  Eu  Eu1  1  0.572  0.946  0.815  1.0
  Eu  Eu2  1  0.247  0.260  0.500  1.0
  Eu  Eu3  1  0.109  0.740  0.136  1.0
  Eu  Eu4  1  0.891  0.260  0.864  1.0
  Eu  Eu5  1  0.428  0.054  0.185  1.0
  Ge  Ge6  1  0.093  0.841  0.803  1.0
  Ge  Ge7  1  0.770  0.276  0.471  1.0
  Ge  Ge8  1  0.907  0.159  0.197  1.0
  Ge  Ge9  1  0.230  0.724  0.529  1.0
  Ge  Ge10  1  0.445  0.482  0.813  1.0
  Ge  Ge11  1  0.555  0.518  0.187  1.0
  S  S12  1  0.391  0.907  0.458  1.0
  S  S13  1  0.216  0.579  0.919  1.0
  S  S14  1  0.995  0.181  0.360  1.0
  S  S15  1  0.646  0.622  0.767  1.0
  S  S16  1  0.118  0.655  0.403  1.0
  S  S17  1  0.880  0.888  0.929  1.0
  S  S18  1  0.360  0.462  0.646  1.0
  S  S19  1  0.005  0.819  0.640  1.0
  S  S20  1  0.640  0.538  0.354  1.0
  S  S21  1  0.120  0.112  0.071  1.0
  S  S22  1  0.609  0.093  0.542  1.0
  S  S23  1  0.225  0.049  0.764  1.0
  S  S24  1  0.545  0.217  0.923  1.0
  S  S25  1  0.455  0.783  0.077  1.0
  S  S26  1  0.784  0.421  0.081  1.0
  S  S27  1  0.775  0.951  0.236  1.0
  S  S28  1  0.882  0.345  0.597  1.0
  S  S29  1  0.354  0.378  0.233  1.0
[/CIF]
.