The structure described by Ni3S2 crystallizes in the trigonal R3m space group. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 3-coordinate geometry to three equivalent S(1) atoms. In the second Ni site, Ni(2) is bonded in a 4-coordinate geometry to one S(2) and three equivalent S(1) atoms. In the third Ni site, Ni(3) is bonded in a distorted trigonal non-coplanar geometry to one S(1) and three equivalent S(2) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a 7-coordinate geometry to one Ni(3), three equivalent Ni(1), and three equivalent Ni(2) atoms. In the second S site, S(2) is bonded to one Ni(2) and three equivalent Ni(3) atoms to form corner-sharing SNi4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ni3S2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.180
_cell_length_b   7.180
_cell_length_c   7.180
_cell_angle_alpha   27.347
_cell_angle_beta   27.347
_cell_angle_gamma   27.347
_symmetry_Int_Tables_number   1
_cell_volume   68.921
_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
  Ni  Ni0  1  0.105  0.105  0.105  1.0
  Ni  Ni1  1  0.991  0.991  0.991  1.0
  Ni  Ni2  1  0.510  0.510  0.510  1.0
  S  S3  1  0.382  0.382  0.382  1.0
  S  S4  1  0.887  0.887  0.887  1.0
[/CIF]
.
The structure described by Ni3S2 crystallizes in the trigonal R3m space group. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 3-coordinate geometry to three equivalent S(1) atoms. In the second Ni site, Ni(2) is bonded in a 4-coordinate geometry to one S(2) and three equivalent S(1) atoms. In the third Ni site, Ni(3) is bonded in a distorted trigonal non-coplanar geometry to one S(1) and three equivalent S(2) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a 7-coordinate geometry to one Ni(3), three equivalent Ni(1), and three equivalent Ni(2) atoms. In the second S site, S(2) is bonded to one Ni(2) and three equivalent Ni(3) atoms to form corner-sharing SNi4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ni3S2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.180
_cell_length_b   7.180
_cell_length_c   7.180
_cell_angle_alpha   27.347
_cell_angle_beta   27.347
_cell_angle_gamma   27.347
_symmetry_Int_Tables_number   1
_cell_volume   68.921
_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
  Ni  Ni0  1  0.105  0.105  0.105  1.0
  Ni  Ni1  1  0.991  0.991  0.991  1.0
  Ni  Ni2  1  0.510  0.510  0.510  1.0
  S  S3  1  0.382  0.382  0.382  1.0
  S  S4  1  0.887  0.887  0.887  1.0
[/CIF]
.