The structure described by Cu2SiS3 is Enargite-like structured and crystallizes in the orthorhombic Cmc2_1 space group. Cu(1) is bonded to one S(2) and three equivalent S(1) atoms to form CuS4 tetrahedra that share corners with five equivalent Si(1)S4 tetrahedra and corners with seven equivalent Cu(1)S4 tetrahedra. Si(1) is bonded to two equivalent S(1) and two equivalent S(2) atoms to form SiS4 tetrahedra that share corners with two equivalent Si(1)S4 tetrahedra and corners with ten equivalent Cu(1)S4 tetrahedra. There are two inequivalent S sites. In the first S site, S(1) is bonded to three equivalent Cu(1) and one Si(1) atom to form SCu3Si tetrahedra that share corners with five equivalent S(2)Cu2Si2 tetrahedra and corners with seven equivalent S(1)Cu3Si tetrahedra. In the second S site, S(2) is bonded to two equivalent Cu(1) and two equivalent Si(1) atoms to form SCu2Si2 tetrahedra that share corners with two equivalent S(2)Cu2Si2 tetrahedra and corners with ten equivalent S(1)Cu3Si tetrahedra. is represented by the CIF file [CIF]
data_Cu2SiS3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.364
_cell_length_b   6.364
_cell_length_c   6.089
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.591
_symmetry_Int_Tables_number   1
_cell_volume   214.451
_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
  Cu  Cu0  1  0.324  0.002  0.980  1.0
  Cu  Cu1  1  0.676  0.998  0.480  1.0
  Cu  Cu2  1  0.998  0.676  0.480  1.0
  Cu  Cu3  1  0.002  0.324  0.980  1.0
  Si  Si4  1  0.668  0.668  0.011  1.0
  Si  Si5  1  0.332  0.332  0.511  1.0
  S  S6  1  0.340  0.016  0.606  1.0
  S  S7  1  0.660  0.984  0.106  1.0
  S  S8  1  0.344  0.344  0.138  1.0
  S  S9  1  0.656  0.656  0.638  1.0
  S  S10  1  0.016  0.340  0.606  1.0
  S  S11  1  0.984  0.660  0.106  1.0
[/CIF]
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The structure described by Cu2SiS3 is Enargite-like structured and crystallizes in the orthorhombic Cmc2_1 space group. Cu(1) is bonded to one S(2) and three equivalent S(1) atoms to form CuS4 tetrahedra that share corners with five equivalent Si(1)S4 tetrahedra and corners with seven equivalent Cu(1)S4 tetrahedra. Si(1) is bonded to two equivalent S(1) and two equivalent S(2) atoms to form SiS4 tetrahedra that share corners with two equivalent Si(1)S4 tetrahedra and corners with ten equivalent Cu(1)S4 tetrahedra. There are two inequivalent S sites. In the first S site, S(1) is bonded to three equivalent Cu(1) and one Si(1) atom to form SCu3Si tetrahedra that share corners with five equivalent S(2)Cu2Si2 tetrahedra and corners with seven equivalent S(1)Cu3Si tetrahedra. In the second S site, S(2) is bonded to two equivalent Cu(1) and two equivalent Si(1) atoms to form SCu2Si2 tetrahedra that share corners with two equivalent S(2)Cu2Si2 tetrahedra and corners with ten equivalent S(1)Cu3Si tetrahedra. is represented by the CIF file [CIF]
data_Cu2SiS3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.364
_cell_length_b   6.364
_cell_length_c   6.089
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.591
_symmetry_Int_Tables_number   1
_cell_volume   214.451
_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
  Cu  Cu0  1  0.324  0.002  0.980  1.0
  Cu  Cu1  1  0.676  0.998  0.480  1.0
  Cu  Cu2  1  0.998  0.676  0.480  1.0
  Cu  Cu3  1  0.002  0.324  0.980  1.0
  Si  Si4  1  0.668  0.668  0.011  1.0
  Si  Si5  1  0.332  0.332  0.511  1.0
  S  S6  1  0.340  0.016  0.606  1.0
  S  S7  1  0.660  0.984  0.106  1.0
  S  S8  1  0.344  0.344  0.138  1.0
  S  S9  1  0.656  0.656  0.638  1.0
  S  S10  1  0.016  0.340  0.606  1.0
  S  S11  1  0.984  0.660  0.106  1.0
[/CIF]
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