The material described by Ag10Si3S11 is Chalcostibite-like structured and crystallizes in the triclinic P-1 space group. There are ten inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one S(1), one S(3), one S(6), and one S(9) atom to form distorted AgS4 trigonal pyramids that share corners with two equivalent Si(2)S4 tetrahedra, corners with two equivalent Si(3)S4 tetrahedra,  a cornercorner with one Ag(6)S4 trigonal pyramid, and  an edgeedge with one Ag(3)S4 tetrahedra. In the second Ag site, Ag(2) is bonded in a 2-coordinate geometry to one S(4), one S(5), and one S(8) atom. In the third Ag site, Ag(3) is bonded to one S(1), one S(11), one S(3), and one S(7) atom to form distorted AgS4 tetrahedra that share  a cornercorner with one Si(1)S4 tetrahedra,  a cornercorner with one Si(3)S4 tetrahedra, corners with two equivalent Ag(4)S4 tetrahedra, corners with two equivalent Si(2)S4 tetrahedra, and  an edgeedge with one Ag(1)S4 trigonal pyramid. In the fourth Ag site, Ag(4) is bonded to one S(11), one S(2), one S(4), and one S(7) atom to form distorted AgS4 tetrahedra that share  a cornercorner with one Si(2)S4 tetrahedra,  a cornercorner with one Si(3)S4 tetrahedra, corners with two equivalent Ag(3)S4 tetrahedra, corners with two equivalent Si(1)S4 tetrahedra, and  a cornercorner with one Ag(6)S4 trigonal pyramid. In the fifth Ag site, Ag(5) is bonded in a 4-coordinate geometry to one S(1), one S(10), one S(6), and one S(9) atom. In the sixth Ag site, Ag(6) is bonded to one S(4), one S(5), one S(8), and one S(9) atom to form distorted AgS4 trigonal pyramids that share  a cornercorner with one Ag(4)S4 tetrahedra,  a cornercorner with one Si(3)S4 tetrahedra, corners with three equivalent Si(1)S4 tetrahedra, and  a cornercorner with one Ag(1)S4 trigonal pyramid. In the seventh Ag site, Ag(7) is bonded in a 4-coordinate geometry to one S(3), one S(6), one S(7), and one S(8) atom. In the eighth Ag site, Ag(8) is bonded in a 3-coordinate geometry to one S(1), one S(2), and one S(5) atom. In the ninth Ag site, Ag(9) is bonded in a 4-coordinate geometry to one S(3), one S(6), one S(7), and one S(8) atom. In the tenth Ag site, Ag(10) is bonded in a 3-coordinate geometry to one S(2) and two equivalent S(11) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded to one S(11), one S(4), one S(5), and one S(8) atom to form SiS4 tetrahedra that share  a cornercorner with one Ag(3)S4 tetrahedra, corners with two equivalent Ag(4)S4 tetrahedra, and corners with three equivalent Ag(6)S4 trigonal pyramids. In the second Si site, Si(2) is bonded to one S(10), one S(3), one S(6), and one S(7) atom to form SiS4 tetrahedra that share  a cornercorner with one Ag(4)S4 tetrahedra,  a cornercorner with one Si(3)S4 tetrahedra, corners with two equivalent Ag(3)S4 tetrahedra, and corners with two equivalent Ag(1)S4 trigonal pyramids. In the third Si site, Si(3) is bonded to one S(1), one S(10), one S(2), and one S(9) atom to form SiS4 tetrahedra that share  a cornercorner with one Ag(3)S4 tetrahedra,  a cornercorner with one Ag(4)S4 tetrahedra,  a cornercorner with one Si(2)S4 tetrahedra,  a cornercorner with one Ag(6)S4 trigonal pyramid, and corners with two equivalent Ag(1)S4 trigonal pyramids. There are eleven inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to one Ag(1), one Ag(3), one Ag(5), one Ag(8), and one Si(3) atom. In the second S site, S(2) is bonded to one Ag(10), one Ag(4), one Ag(8), and one Si(3) atom to form distorted corner-sharing SSiAg3 tetrahedra. In the third S site, S(3) is bonded in a 5-coordinate geometry to one Ag(1), one Ag(3), one Ag(7), one Ag(9), and one Si(2) atom. In the fourth S site, S(4) is bonded to one Ag(2), one Ag(4), one Ag(6), and one Si(1) atom to form distorted corner-sharing SSiAg3 tetrahedra. In the fifth S site, S(5) is bonded to one Ag(2), one Ag(6), one Ag(8), and one Si(1) atom to form distorted corner-sharing SSiAg3 trigonal pyramids. In the sixth S site, S(6) is bonded to one Ag(1), one Ag(5), one Ag(7), one Ag(9), and one Si(2) atom to form distorted corner-sharing SSiAg4 trigonal bipyramids. In the seventh S site, S(7) is bonded in a 5-coordinate geometry to one Ag(3), one Ag(4), one Ag(7), one Ag(9), and one Si(2) atom. In the eighth S site, S(8) is bonded in a 5-coordinate geometry to one Ag(2), one Ag(6), one Ag(7), one Ag(9), and one Si(1) atom. In the ninth S site, S(9) is bonded to one Ag(1), one Ag(5), one Ag(6), and one Si(3) atom to form distorted SSiAg3 tetrahedra that share  a cornercorner with one S(2)SiAg3 tetrahedra,  a cornercorner with one S(4)SiAg3 tetrahedra, corners with two equivalent S(6)SiAg4 trigonal bipyramids, and  a cornercorner with one S(5)SiAg3 trigonal pyramid. In the tenth S site, S(10) is bonded in a distorted trigonal non-coplanar geometry to one Ag(5), one Si(2), and one Si(3) atom. In the eleventh S site, S(11) is bonded in a 5-coordinate geometry to one Ag(3), one Ag(4), two equivalent Ag(10), and one Si(1) atom. is represented by the CIF file [CIF]
data_Si3Ag10S11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.503
_cell_length_b   12.509
_cell_length_c   13.575
_cell_angle_alpha   69.151
_cell_angle_beta   79.743
_cell_angle_gamma   78.213
_symmetry_Int_Tables_number   1
_cell_volume   1003.515
_cell_formula_units_Z   2
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
  Si  Si0  1  0.303  0.825  0.937  1.0
  Si  Si1  1  0.697  0.175  0.063  1.0
  Si  Si2  1  0.012  0.789  0.539  1.0
  Si  Si3  1  0.988  0.211  0.461  1.0
  Si  Si4  1  0.202  0.488  0.699  1.0
  Si  Si5  1  0.798  0.512  0.301  1.0
  Ag  Ag6  1  0.554  0.689  0.471  1.0
  Ag  Ag7  1  0.446  0.311  0.529  1.0
  Ag  Ag8  1  0.807  0.028  0.883  1.0
  Ag  Ag9  1  0.193  0.972  0.117  1.0
  Ag  Ag10  1  0.483  0.735  0.685  1.0
  Ag  Ag11  1  0.517  0.265  0.315  1.0
  Ag  Ag12  1  0.858  0.722  0.822  1.0
  Ag  Ag13  1  0.142  0.278  0.178  1.0
  Ag  Ag14  1  0.204  0.637  0.368  1.0
  Ag  Ag15  1  0.796  0.363  0.632  1.0
  Ag  Ag16  1  0.773  0.827  0.121  1.0
  Ag  Ag17  1  0.227  0.173  0.879  1.0
  Ag  Ag18  1  0.645  0.962  0.659  1.0
  Ag  Ag19  1  0.355  0.038  0.341  1.0
  Ag  Ag20  1  0.251  0.598  0.164  1.0
  Ag  Ag21  1  0.749  0.402  0.836  1.0
  Ag  Ag22  1  0.853  0.972  0.312  1.0
  Ag  Ag23  1  0.147  0.028  0.688  1.0
  Ag  Ag24  1  0.675  0.534  0.038  1.0
  Ag  Ag25  1  0.325  0.466  0.962  1.0
  S  S26  1  0.519  0.527  0.665  1.0
  S  S27  1  0.481  0.473  0.335  1.0
  S  S28  1  0.040  0.503  0.847  1.0
  S  S29  1  0.960  0.497  0.153  1.0
  S  S30  1  0.690  0.863  0.517  1.0
  S  S31  1  0.310  0.137  0.483  1.0
  S  S32  1  0.970  0.824  0.942  1.0
  S  S33  1  0.030  0.176  0.058  1.0
  S  S34  1  0.384  0.791  0.093  1.0
  S  S35  1  0.616  0.209  0.907  1.0
  S  S36  1  0.207  0.839  0.389  1.0
  S  S37  1  0.793  0.161  0.611  1.0
  S  S38  1  0.097  0.830  0.663  1.0
  S  S39  1  0.903  0.170  0.337  1.0
  S  S40  1  0.397  0.984  0.825  1.0
  S  S41  1  0.603  0.016  0.175  1.0
  S  S42  1  0.182  0.323  0.692  1.0
  S  S43  1  0.818  0.677  0.308  1.0
  S  S44  1  0.017  0.603  0.573  1.0
  S  S45  1  0.983  0.397  0.427  1.0
  S  S46  1  0.477  0.680  0.888  1.0
  S  S47  1  0.523  0.320  0.112  1.0
[/CIF]
.
The material described by Ag10Si3S11 is Chalcostibite-like structured and crystallizes in the triclinic P-1 space group. There are ten inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one S(1), one S(3), one S(6), and one S(9) atom to form distorted AgS4 trigonal pyramids that share corners with two equivalent Si(2)S4 tetrahedra, corners with two equivalent Si(3)S4 tetrahedra,  a cornercorner with one Ag(6)S4 trigonal pyramid, and  an edgeedge with one Ag(3)S4 tetrahedra. In the second Ag site, Ag(2) is bonded in a 2-coordinate geometry to one S(4), one S(5), and one S(8) atom. In the third Ag site, Ag(3) is bonded to one S(1), one S(11), one S(3), and one S(7) atom to form distorted AgS4 tetrahedra that share  a cornercorner with one Si(1)S4 tetrahedra,  a cornercorner with one Si(3)S4 tetrahedra, corners with two equivalent Ag(4)S4 tetrahedra, corners with two equivalent Si(2)S4 tetrahedra, and  an edgeedge with one Ag(1)S4 trigonal pyramid. In the fourth Ag site, Ag(4) is bonded to one S(11), one S(2), one S(4), and one S(7) atom to form distorted AgS4 tetrahedra that share  a cornercorner with one Si(2)S4 tetrahedra,  a cornercorner with one Si(3)S4 tetrahedra, corners with two equivalent Ag(3)S4 tetrahedra, corners with two equivalent Si(1)S4 tetrahedra, and  a cornercorner with one Ag(6)S4 trigonal pyramid. In the fifth Ag site, Ag(5) is bonded in a 4-coordinate geometry to one S(1), one S(10), one S(6), and one S(9) atom. In the sixth Ag site, Ag(6) is bonded to one S(4), one S(5), one S(8), and one S(9) atom to form distorted AgS4 trigonal pyramids that share  a cornercorner with one Ag(4)S4 tetrahedra,  a cornercorner with one Si(3)S4 tetrahedra, corners with three equivalent Si(1)S4 tetrahedra, and  a cornercorner with one Ag(1)S4 trigonal pyramid. In the seventh Ag site, Ag(7) is bonded in a 4-coordinate geometry to one S(3), one S(6), one S(7), and one S(8) atom. In the eighth Ag site, Ag(8) is bonded in a 3-coordinate geometry to one S(1), one S(2), and one S(5) atom. In the ninth Ag site, Ag(9) is bonded in a 4-coordinate geometry to one S(3), one S(6), one S(7), and one S(8) atom. In the tenth Ag site, Ag(10) is bonded in a 3-coordinate geometry to one S(2) and two equivalent S(11) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded to one S(11), one S(4), one S(5), and one S(8) atom to form SiS4 tetrahedra that share  a cornercorner with one Ag(3)S4 tetrahedra, corners with two equivalent Ag(4)S4 tetrahedra, and corners with three equivalent Ag(6)S4 trigonal pyramids. In the second Si site, Si(2) is bonded to one S(10), one S(3), one S(6), and one S(7) atom to form SiS4 tetrahedra that share  a cornercorner with one Ag(4)S4 tetrahedra,  a cornercorner with one Si(3)S4 tetrahedra, corners with two equivalent Ag(3)S4 tetrahedra, and corners with two equivalent Ag(1)S4 trigonal pyramids. In the third Si site, Si(3) is bonded to one S(1), one S(10), one S(2), and one S(9) atom to form SiS4 tetrahedra that share  a cornercorner with one Ag(3)S4 tetrahedra,  a cornercorner with one Ag(4)S4 tetrahedra,  a cornercorner with one Si(2)S4 tetrahedra,  a cornercorner with one Ag(6)S4 trigonal pyramid, and corners with two equivalent Ag(1)S4 trigonal pyramids. There are eleven inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to one Ag(1), one Ag(3), one Ag(5), one Ag(8), and one Si(3) atom. In the second S site, S(2) is bonded to one Ag(10), one Ag(4), one Ag(8), and one Si(3) atom to form distorted corner-sharing SSiAg3 tetrahedra. In the third S site, S(3) is bonded in a 5-coordinate geometry to one Ag(1), one Ag(3), one Ag(7), one Ag(9), and one Si(2) atom. In the fourth S site, S(4) is bonded to one Ag(2), one Ag(4), one Ag(6), and one Si(1) atom to form distorted corner-sharing SSiAg3 tetrahedra. In the fifth S site, S(5) is bonded to one Ag(2), one Ag(6), one Ag(8), and one Si(1) atom to form distorted corner-sharing SSiAg3 trigonal pyramids. In the sixth S site, S(6) is bonded to one Ag(1), one Ag(5), one Ag(7), one Ag(9), and one Si(2) atom to form distorted corner-sharing SSiAg4 trigonal bipyramids. In the seventh S site, S(7) is bonded in a 5-coordinate geometry to one Ag(3), one Ag(4), one Ag(7), one Ag(9), and one Si(2) atom. In the eighth S site, S(8) is bonded in a 5-coordinate geometry to one Ag(2), one Ag(6), one Ag(7), one Ag(9), and one Si(1) atom. In the ninth S site, S(9) is bonded to one Ag(1), one Ag(5), one Ag(6), and one Si(3) atom to form distorted SSiAg3 tetrahedra that share  a cornercorner with one S(2)SiAg3 tetrahedra,  a cornercorner with one S(4)SiAg3 tetrahedra, corners with two equivalent S(6)SiAg4 trigonal bipyramids, and  a cornercorner with one S(5)SiAg3 trigonal pyramid. In the tenth S site, S(10) is bonded in a distorted trigonal non-coplanar geometry to one Ag(5), one Si(2), and one Si(3) atom. In the eleventh S site, S(11) is bonded in a 5-coordinate geometry to one Ag(3), one Ag(4), two equivalent Ag(10), and one Si(1) atom. is represented by the CIF file [CIF]
data_Si3Ag10S11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.503
_cell_length_b   12.509
_cell_length_c   13.575
_cell_angle_alpha   69.151
_cell_angle_beta   79.743
_cell_angle_gamma   78.213
_symmetry_Int_Tables_number   1
_cell_volume   1003.515
_cell_formula_units_Z   2
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
  Si  Si0  1  0.303  0.825  0.937  1.0
  Si  Si1  1  0.697  0.175  0.063  1.0
  Si  Si2  1  0.012  0.789  0.539  1.0
  Si  Si3  1  0.988  0.211  0.461  1.0
  Si  Si4  1  0.202  0.488  0.699  1.0
  Si  Si5  1  0.798  0.512  0.301  1.0
  Ag  Ag6  1  0.554  0.689  0.471  1.0
  Ag  Ag7  1  0.446  0.311  0.529  1.0
  Ag  Ag8  1  0.807  0.028  0.883  1.0
  Ag  Ag9  1  0.193  0.972  0.117  1.0
  Ag  Ag10  1  0.483  0.735  0.685  1.0
  Ag  Ag11  1  0.517  0.265  0.315  1.0
  Ag  Ag12  1  0.858  0.722  0.822  1.0
  Ag  Ag13  1  0.142  0.278  0.178  1.0
  Ag  Ag14  1  0.204  0.637  0.368  1.0
  Ag  Ag15  1  0.796  0.363  0.632  1.0
  Ag  Ag16  1  0.773  0.827  0.121  1.0
  Ag  Ag17  1  0.227  0.173  0.879  1.0
  Ag  Ag18  1  0.645  0.962  0.659  1.0
  Ag  Ag19  1  0.355  0.038  0.341  1.0
  Ag  Ag20  1  0.251  0.598  0.164  1.0
  Ag  Ag21  1  0.749  0.402  0.836  1.0
  Ag  Ag22  1  0.853  0.972  0.312  1.0
  Ag  Ag23  1  0.147  0.028  0.688  1.0
  Ag  Ag24  1  0.675  0.534  0.038  1.0
  Ag  Ag25  1  0.325  0.466  0.962  1.0
  S  S26  1  0.519  0.527  0.665  1.0
  S  S27  1  0.481  0.473  0.335  1.0
  S  S28  1  0.040  0.503  0.847  1.0
  S  S29  1  0.960  0.497  0.153  1.0
  S  S30  1  0.690  0.863  0.517  1.0
  S  S31  1  0.310  0.137  0.483  1.0
  S  S32  1  0.970  0.824  0.942  1.0
  S  S33  1  0.030  0.176  0.058  1.0
  S  S34  1  0.384  0.791  0.093  1.0
  S  S35  1  0.616  0.209  0.907  1.0
  S  S36  1  0.207  0.839  0.389  1.0
  S  S37  1  0.793  0.161  0.611  1.0
  S  S38  1  0.097  0.830  0.663  1.0
  S  S39  1  0.903  0.170  0.337  1.0
  S  S40  1  0.397  0.984  0.825  1.0
  S  S41  1  0.603  0.016  0.175  1.0
  S  S42  1  0.182  0.323  0.692  1.0
  S  S43  1  0.818  0.677  0.308  1.0
  S  S44  1  0.017  0.603  0.573  1.0
  S  S45  1  0.983  0.397  0.427  1.0
  S  S46  1  0.477  0.680  0.888  1.0
  S  S47  1  0.523  0.320  0.112  1.0
[/CIF]
.