The material described by Ti2CrCuAl2S8 is Spinel-derived structured and crystallizes in the monoclinic Cm space group. Ti(1) is bonded to one S(1), one S(2), one S(3), one S(4), one S(5), and one S(6) atom to form TiS6 octahedra that share corners with three equivalent Cu(1)S4 tetrahedra, corners with three equivalent Al(1)S4 tetrahedra, edges with two equivalent Ti(1)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, and edges with two equivalent Al(2)S6 octahedra. Cr(1) is bonded to one S(1), one S(4), two equivalent S(3), and two equivalent S(6) atoms to form CrS6 octahedra that share corners with three equivalent Cu(1)S4 tetrahedra, corners with three equivalent Al(1)S4 tetrahedra, edges with two equivalent Al(2)S6 octahedra, and edges with four equivalent Ti(1)S6 octahedra. Cu(1) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form CuS4 tetrahedra that share corners with three equivalent Cr(1)S6 octahedra, corners with three equivalent Al(2)S6 octahedra, and corners with six equivalent Ti(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one S(4), one S(5), and two equivalent S(6) atoms to form AlS4 tetrahedra that share corners with three equivalent Cr(1)S6 octahedra, corners with three equivalent Al(2)S6 octahedra, and corners with six equivalent Ti(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 58-61°. In the second Al site, Al(2) is bonded to one S(2), one S(5), two equivalent S(3), and two equivalent S(6) atoms to form AlS6 octahedra that share corners with three equivalent Cu(1)S4 tetrahedra, corners with three equivalent Al(1)S4 tetrahedra, edges with two equivalent Cr(1)S6 octahedra, and edges with four equivalent Ti(1)S6 octahedra. There are six inequivalent S sites. In the first S site, S(1) is bonded in a rectangular see-saw-like geometry to two equivalent Ti(1), one Cr(1), and one Cu(1) atom. In the second S site, S(2) is bonded in a rectangular see-saw-like geometry to two equivalent Ti(1), one Cu(1), and one Al(2) atom. In the third S site, S(3) is bonded in a rectangular see-saw-like geometry to one Ti(1), one Cr(1), one Cu(1), and one Al(2) atom. In the fourth S site, S(4) is bonded to two equivalent Ti(1), one Cr(1), and one Al(1) atom to form distorted STi2AlCr trigonal pyramids that share  a cornercorner with one S(5)Ti2Al2 tetrahedra, corners with two equivalent S(6)TiAl2Cr tetrahedra,  an edgeedge with one S(5)Ti2Al2 tetrahedra, and edges with two equivalent S(6)TiAl2Cr tetrahedra. In the fifth S site, S(5) is bonded to two equivalent Ti(1), one Al(1), and one Al(2) atom to form distorted STi2Al2 tetrahedra that share corners with two equivalent S(6)TiAl2Cr tetrahedra,  a cornercorner with one S(4)Ti2AlCr trigonal pyramid, edges with two equivalent S(6)TiAl2Cr tetrahedra, and  an edgeedge with one S(4)Ti2AlCr trigonal pyramid. In the sixth S site, S(6) is bonded to one Ti(1), one Cr(1), one Al(1), and one Al(2) atom to form distorted STiAl2Cr tetrahedra that share  a cornercorner with one S(5)Ti2Al2 tetrahedra,  a cornercorner with one S(6)TiAl2Cr tetrahedra,  a cornercorner with one S(4)Ti2AlCr trigonal pyramid,  an edgeedge with one S(5)Ti2Al2 tetrahedra,  an edgeedge with one S(6)TiAl2Cr tetrahedra, and  an edgeedge with one S(4)Ti2AlCr trigonal pyramid. is represented by the CIF file [CIF]
data_Ti2Al2CrCuS8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.006
_cell_length_b   7.177
_cell_length_c   6.986
_cell_angle_alpha   90.000
_cell_angle_beta   60.096
_cell_angle_gamma   119.415
_symmetry_Int_Tables_number   1
_cell_volume   250.909
_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
  Ti  Ti0  1  0.021  0.007  0.465  1.0
  Ti  Ti1  1  0.021  0.007  0.014  1.0
  Al  Al2  1  0.237  0.614  0.631  1.0
  Al  Al3  1  0.492  0.490  0.004  1.0
  Cr  Cr4  1  0.482  0.004  0.009  1.0
  Cu  Cu5  1  0.754  0.382  0.373  1.0
  S  S6  1  0.012  0.757  0.244  1.0
  S  S7  1  0.013  0.250  0.244  1.0
  S  S8  1  0.495  0.249  0.769  1.0
  S  S9  1  0.495  0.249  0.236  1.0
  S  S10  1  0.978  0.226  0.761  1.0
  S  S11  1  0.983  0.755  0.759  1.0
  S  S12  1  0.508  0.755  0.230  1.0
  S  S13  1  0.508  0.755  0.762  1.0
[/CIF]
.
The material described by Ti2CrCuAl2S8 is Spinel-derived structured and crystallizes in the monoclinic Cm space group. Ti(1) is bonded to one S(1), one S(2), one S(3), one S(4), one S(5), and one S(6) atom to form TiS6 octahedra that share corners with three equivalent Cu(1)S4 tetrahedra, corners with three equivalent Al(1)S4 tetrahedra, edges with two equivalent Ti(1)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, and edges with two equivalent Al(2)S6 octahedra. Cr(1) is bonded to one S(1), one S(4), two equivalent S(3), and two equivalent S(6) atoms to form CrS6 octahedra that share corners with three equivalent Cu(1)S4 tetrahedra, corners with three equivalent Al(1)S4 tetrahedra, edges with two equivalent Al(2)S6 octahedra, and edges with four equivalent Ti(1)S6 octahedra. Cu(1) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form CuS4 tetrahedra that share corners with three equivalent Cr(1)S6 octahedra, corners with three equivalent Al(2)S6 octahedra, and corners with six equivalent Ti(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one S(4), one S(5), and two equivalent S(6) atoms to form AlS4 tetrahedra that share corners with three equivalent Cr(1)S6 octahedra, corners with three equivalent Al(2)S6 octahedra, and corners with six equivalent Ti(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 58-61°. In the second Al site, Al(2) is bonded to one S(2), one S(5), two equivalent S(3), and two equivalent S(6) atoms to form AlS6 octahedra that share corners with three equivalent Cu(1)S4 tetrahedra, corners with three equivalent Al(1)S4 tetrahedra, edges with two equivalent Cr(1)S6 octahedra, and edges with four equivalent Ti(1)S6 octahedra. There are six inequivalent S sites. In the first S site, S(1) is bonded in a rectangular see-saw-like geometry to two equivalent Ti(1), one Cr(1), and one Cu(1) atom. In the second S site, S(2) is bonded in a rectangular see-saw-like geometry to two equivalent Ti(1), one Cu(1), and one Al(2) atom. In the third S site, S(3) is bonded in a rectangular see-saw-like geometry to one Ti(1), one Cr(1), one Cu(1), and one Al(2) atom. In the fourth S site, S(4) is bonded to two equivalent Ti(1), one Cr(1), and one Al(1) atom to form distorted STi2AlCr trigonal pyramids that share  a cornercorner with one S(5)Ti2Al2 tetrahedra, corners with two equivalent S(6)TiAl2Cr tetrahedra,  an edgeedge with one S(5)Ti2Al2 tetrahedra, and edges with two equivalent S(6)TiAl2Cr tetrahedra. In the fifth S site, S(5) is bonded to two equivalent Ti(1), one Al(1), and one Al(2) atom to form distorted STi2Al2 tetrahedra that share corners with two equivalent S(6)TiAl2Cr tetrahedra,  a cornercorner with one S(4)Ti2AlCr trigonal pyramid, edges with two equivalent S(6)TiAl2Cr tetrahedra, and  an edgeedge with one S(4)Ti2AlCr trigonal pyramid. In the sixth S site, S(6) is bonded to one Ti(1), one Cr(1), one Al(1), and one Al(2) atom to form distorted STiAl2Cr tetrahedra that share  a cornercorner with one S(5)Ti2Al2 tetrahedra,  a cornercorner with one S(6)TiAl2Cr tetrahedra,  a cornercorner with one S(4)Ti2AlCr trigonal pyramid,  an edgeedge with one S(5)Ti2Al2 tetrahedra,  an edgeedge with one S(6)TiAl2Cr tetrahedra, and  an edgeedge with one S(4)Ti2AlCr trigonal pyramid. is represented by the CIF file [CIF]
data_Ti2Al2CrCuS8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.006
_cell_length_b   7.177
_cell_length_c   6.986
_cell_angle_alpha   90.000
_cell_angle_beta   60.096
_cell_angle_gamma   119.415
_symmetry_Int_Tables_number   1
_cell_volume   250.909
_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
  Ti  Ti0  1  0.021  0.007  0.465  1.0
  Ti  Ti1  1  0.021  0.007  0.014  1.0
  Al  Al2  1  0.237  0.614  0.631  1.0
  Al  Al3  1  0.492  0.490  0.004  1.0
  Cr  Cr4  1  0.482  0.004  0.009  1.0
  Cu  Cu5  1  0.754  0.382  0.373  1.0
  S  S6  1  0.012  0.757  0.244  1.0
  S  S7  1  0.013  0.250  0.244  1.0
  S  S8  1  0.495  0.249  0.769  1.0
  S  S9  1  0.495  0.249  0.236  1.0
  S  S10  1  0.978  0.226  0.761  1.0
  S  S11  1  0.983  0.755  0.759  1.0
  S  S12  1  0.508  0.755  0.230  1.0
  S  S13  1  0.508  0.755  0.762  1.0
[/CIF]
.