The material described by Sc8CuTe3 crystallizes in the monoclinic Pm space group. There are twenty-four inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 5-coordinate geometry to one Cu(1), two equivalent Cu(3), and two equivalent Te(7) atoms. In the second Sc site, Sc(2) is bonded to two equivalent Cu(2), one Te(9), and two equivalent Te(8) atoms to form distorted ScCu2Te3 trigonal bipyramids that share corners with two equivalent Sc(10)Cu2Te3 trigonal bipyramids, edges with two equivalent Sc(12)Te5 square pyramids,  an edgeedge with one Sc(10)Cu2Te3 trigonal bipyramid, and edges with two equivalent Sc(2)Cu2Te3 trigonal bipyramids. In the third Sc site, Sc(3) is bonded in a 5-coordinate geometry to one Cu(3), two equivalent Cu(1), and two equivalent Te(5) atoms. In the fourth Sc site, Sc(4) is bonded in a 5-coordinate geometry to one Cu(2), two equivalent Te(6), and two equivalent Te(9) atoms. In the fifth Sc site, Sc(5) is bonded in a 2-coordinate geometry to one Cu(1) and one Te(5) atom. In the sixth Sc site, Sc(6) is bonded in a 2-coordinate geometry to one Te(6) and one Te(9) atom. In the seventh Sc site, Sc(7) is bonded in a 2-coordinate geometry to one Cu(3) and one Te(7) atom. In the eighth Sc site, Sc(8) is bonded in a 2-coordinate geometry to one Cu(2) and one Te(8) atom. In the ninth Sc site, Sc(9) is bonded to two equivalent Cu(3), one Te(5), and two equivalent Te(3) atoms to form distorted edge-sharing ScCu2Te3 trigonal bipyramids. In the tenth Sc site, Sc(10) is bonded to two equivalent Cu(2), one Te(6), and two equivalent Te(4) atoms to form a mixture of distorted edge and corner-sharing ScCu2Te3 trigonal bipyramids. In the eleventh Sc site, Sc(11) is bonded to two equivalent Cu(1), one Te(7), and two equivalent Te(1) atoms to form distorted edge-sharing ScCu2Te3 trigonal bipyramids. In the twelfth Sc site, Sc(12) is bonded to one Te(8), two equivalent Te(2), and two equivalent Te(9) atoms to form distorted ScTe5 square pyramids that share edges with two equivalent Sc(12)Te5 square pyramids and edges with two equivalent Sc(2)Cu2Te3 trigonal bipyramids. In the thirteenth Sc site, Sc(13) is bonded in a 4-coordinate geometry to two equivalent Te(3) and two equivalent Te(8) atoms. In the fourteenth Sc site, Sc(14) is bonded in a 4-coordinate geometry to two equivalent Te(4) and two equivalent Te(7) atoms. In the fifteenth Sc site, Sc(15) is bonded in a 4-coordinate geometry to two equivalent Te(1) and two equivalent Te(6) atoms. In the sixteenth Sc site, Sc(16) is bonded in a 4-coordinate geometry to two equivalent Te(2) and two equivalent Te(5) atoms. In the seventeenth Sc site, Sc(17) is bonded in a 4-coordinate geometry to one Te(2), one Te(5), one Te(9), and two equivalent Te(3) atoms. In the eighteenth Sc site, Sc(18) is bonded in a 4-coordinate geometry to one Cu(1), one Te(1), one Te(6), and two equivalent Te(4) atoms. In the nineteenth Sc site, Sc(19) is bonded in a 4-coordinate geometry to one Cu(2), one Te(4), one Te(7), and two equivalent Te(1) atoms. In the twentieth Sc site, Sc(20) is bonded in a 4-coordinate geometry to one Cu(3), one Te(3), one Te(8), and two equivalent Te(2) atoms. In the twenty-first Sc site, Sc(21) is bonded in a 3-coordinate geometry to two equivalent Cu(3) and one Te(2) atom. In the twenty-second Sc site, Sc(22) is bonded in a 3-coordinate geometry to two equivalent Cu(2) and one Te(1) atom. In the twenty-third Sc site, Sc(23) is bonded in a 3-coordinate geometry to two equivalent Cu(1) and one Te(4) atom. In the twenty-fourth Sc site, Sc(24) is bonded in a 3-coordinate geometry to one Te(3) and two equivalent Te(9) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 9-coordinate geometry to one Sc(1), one Sc(18), one Sc(5), two equivalent Sc(11), two equivalent Sc(23), and two equivalent Sc(3) atoms. In the second Cu site, Cu(2) is bonded in a 9-coordinate geometry to one Sc(19), one Sc(4), one Sc(8), two equivalent Sc(10), two equivalent Sc(2), and two equivalent Sc(22) atoms. In the third Cu site, Cu(3) is bonded in a 9-coordinate geometry to one Sc(20), one Sc(3), one Sc(7), two equivalent Sc(1), two equivalent Sc(21), and two equivalent Sc(9) atoms. There are nine inequivalent Te sites. In the first Te site, Te(1) is bonded in a 8-coordinate geometry to one Sc(18), one Sc(22), two equivalent Sc(11), two equivalent Sc(15), and two equivalent Sc(19) atoms. In the second Te site, Te(2) is bonded in a 8-coordinate geometry to one Sc(17), one Sc(21), two equivalent Sc(12), two equivalent Sc(16), and two equivalent Sc(20) atoms. In the third Te site, Te(3) is bonded in a 8-coordinate geometry to one Sc(20), one Sc(24), two equivalent Sc(13), two equivalent Sc(17), and two equivalent Sc(9) atoms. In the fourth Te site, Te(4) is bonded in a 8-coordinate geometry to one Sc(19), one Sc(23), two equivalent Sc(10), two equivalent Sc(14), and two equivalent Sc(18) atoms. In the fifth Te site, Te(5) is bonded to one Sc(17), one Sc(5), one Sc(9), two equivalent Sc(16), and two equivalent Sc(3) atoms to form distorted edge-sharing TeSc7 pentagonal bipyramids. In the sixth Te site, Te(6) is bonded to one Sc(10), one Sc(18), one Sc(6), two equivalent Sc(15), and two equivalent Sc(4) atoms to form distorted edge-sharing TeSc7 pentagonal bipyramids. In the seventh Te site, Te(7) is bonded to one Sc(11), one Sc(19), one Sc(7), two equivalent Sc(1), and two equivalent Sc(14) atoms to form distorted edge-sharing TeSc7 pentagonal bipyramids. In the eighth Te site, Te(8) is bonded in a 7-coordinate geometry to one Sc(12), one Sc(20), one Sc(8), two equivalent Sc(13), and two equivalent Sc(2) atoms. In the ninth Te site, Te(9) is bonded in a 9-coordinate geometry to one Sc(17), one Sc(2), one Sc(6), two equivalent Sc(12), two equivalent Sc(24), and two equivalent Sc(4) atoms. is represented by the CIF file [CIF]
data_Sc8CuTe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.852
_cell_length_b   10.747
_cell_length_c   20.205
_cell_angle_alpha   89.962
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   836.354
_cell_formula_units_Z   3
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
  Sc  Sc0  1  0.500  0.121  0.023  1.0
  Sc  Sc1  1  0.500  0.374  0.524  1.0
  Sc  Sc2  1  0.000  0.880  0.976  1.0
  Sc  Sc3  1  0.000  0.609  0.466  1.0
  Sc  Sc4  1  0.500  0.610  0.993  1.0
  Sc  Sc5  1  0.500  0.893  0.491  1.0
  Sc  Sc6  1  0.000  0.390  0.007  1.0
  Sc  Sc7  1  0.000  0.110  0.508  1.0
  Sc  Sc8  1  0.500  0.040  0.846  1.0
  Sc  Sc9  1  0.500  0.460  0.345  1.0
  Sc  Sc10  1  0.000  0.959  0.154  1.0
  Sc  Sc11  1  0.000  0.529  0.663  1.0
  Sc  Sc12  1  0.500  0.067  0.638  1.0
  Sc  Sc13  1  0.500  0.434  0.138  1.0
  Sc  Sc14  1  0.000  0.935  0.362  1.0
  Sc  Sc15  1  0.000  0.568  0.863  1.0
  Sc  Sc16  1  0.500  0.749  0.730  1.0
  Sc  Sc17  1  0.500  0.751  0.229  1.0
  Sc  Sc18  1  0.000  0.252  0.270  1.0
  Sc  Sc19  1  0.000  0.249  0.770  1.0
  Sc  Sc20  1  0.500  0.321  0.893  1.0
  Sc  Sc21  1  0.500  0.177  0.393  1.0
  Sc  Sc22  1  0.000  0.678  0.108  1.0
  Sc  Sc23  1  0.000  0.841  0.608  1.0
  Cu  Cu24  1  0.500  0.856  0.076  1.0
  Cu  Cu25  1  0.000  0.353  0.424  1.0
  Cu  Cu26  1  0.000  0.144  0.924  1.0
  Te  Te27  1  0.500  0.035  0.263  1.0
  Te  Te28  1  0.500  0.463  0.765  1.0
  Te  Te29  1  0.000  0.967  0.738  1.0
  Te  Te30  1  0.000  0.534  0.238  1.0
  Te  Te31  1  0.500  0.774  0.875  1.0
  Te  Te32  1  0.500  0.728  0.374  1.0
  Te  Te33  1  0.000  0.226  0.125  1.0
  Te  Te34  1  0.000  0.276  0.625  1.0
  Te  Te35  1  0.500  0.645  0.574  1.0
[/CIF]
.
The material described by Sc8CuTe3 crystallizes in the monoclinic Pm space group. There are twenty-four inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 5-coordinate geometry to one Cu(1), two equivalent Cu(3), and two equivalent Te(7) atoms. In the second Sc site, Sc(2) is bonded to two equivalent Cu(2), one Te(9), and two equivalent Te(8) atoms to form distorted ScCu2Te3 trigonal bipyramids that share corners with two equivalent Sc(10)Cu2Te3 trigonal bipyramids, edges with two equivalent Sc(12)Te5 square pyramids,  an edgeedge with one Sc(10)Cu2Te3 trigonal bipyramid, and edges with two equivalent Sc(2)Cu2Te3 trigonal bipyramids. In the third Sc site, Sc(3) is bonded in a 5-coordinate geometry to one Cu(3), two equivalent Cu(1), and two equivalent Te(5) atoms. In the fourth Sc site, Sc(4) is bonded in a 5-coordinate geometry to one Cu(2), two equivalent Te(6), and two equivalent Te(9) atoms. In the fifth Sc site, Sc(5) is bonded in a 2-coordinate geometry to one Cu(1) and one Te(5) atom. In the sixth Sc site, Sc(6) is bonded in a 2-coordinate geometry to one Te(6) and one Te(9) atom. In the seventh Sc site, Sc(7) is bonded in a 2-coordinate geometry to one Cu(3) and one Te(7) atom. In the eighth Sc site, Sc(8) is bonded in a 2-coordinate geometry to one Cu(2) and one Te(8) atom. In the ninth Sc site, Sc(9) is bonded to two equivalent Cu(3), one Te(5), and two equivalent Te(3) atoms to form distorted edge-sharing ScCu2Te3 trigonal bipyramids. In the tenth Sc site, Sc(10) is bonded to two equivalent Cu(2), one Te(6), and two equivalent Te(4) atoms to form a mixture of distorted edge and corner-sharing ScCu2Te3 trigonal bipyramids. In the eleventh Sc site, Sc(11) is bonded to two equivalent Cu(1), one Te(7), and two equivalent Te(1) atoms to form distorted edge-sharing ScCu2Te3 trigonal bipyramids. In the twelfth Sc site, Sc(12) is bonded to one Te(8), two equivalent Te(2), and two equivalent Te(9) atoms to form distorted ScTe5 square pyramids that share edges with two equivalent Sc(12)Te5 square pyramids and edges with two equivalent Sc(2)Cu2Te3 trigonal bipyramids. In the thirteenth Sc site, Sc(13) is bonded in a 4-coordinate geometry to two equivalent Te(3) and two equivalent Te(8) atoms. In the fourteenth Sc site, Sc(14) is bonded in a 4-coordinate geometry to two equivalent Te(4) and two equivalent Te(7) atoms. In the fifteenth Sc site, Sc(15) is bonded in a 4-coordinate geometry to two equivalent Te(1) and two equivalent Te(6) atoms. In the sixteenth Sc site, Sc(16) is bonded in a 4-coordinate geometry to two equivalent Te(2) and two equivalent Te(5) atoms. In the seventeenth Sc site, Sc(17) is bonded in a 4-coordinate geometry to one Te(2), one Te(5), one Te(9), and two equivalent Te(3) atoms. In the eighteenth Sc site, Sc(18) is bonded in a 4-coordinate geometry to one Cu(1), one Te(1), one Te(6), and two equivalent Te(4) atoms. In the nineteenth Sc site, Sc(19) is bonded in a 4-coordinate geometry to one Cu(2), one Te(4), one Te(7), and two equivalent Te(1) atoms. In the twentieth Sc site, Sc(20) is bonded in a 4-coordinate geometry to one Cu(3), one Te(3), one Te(8), and two equivalent Te(2) atoms. In the twenty-first Sc site, Sc(21) is bonded in a 3-coordinate geometry to two equivalent Cu(3) and one Te(2) atom. In the twenty-second Sc site, Sc(22) is bonded in a 3-coordinate geometry to two equivalent Cu(2) and one Te(1) atom. In the twenty-third Sc site, Sc(23) is bonded in a 3-coordinate geometry to two equivalent Cu(1) and one Te(4) atom. In the twenty-fourth Sc site, Sc(24) is bonded in a 3-coordinate geometry to one Te(3) and two equivalent Te(9) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 9-coordinate geometry to one Sc(1), one Sc(18), one Sc(5), two equivalent Sc(11), two equivalent Sc(23), and two equivalent Sc(3) atoms. In the second Cu site, Cu(2) is bonded in a 9-coordinate geometry to one Sc(19), one Sc(4), one Sc(8), two equivalent Sc(10), two equivalent Sc(2), and two equivalent Sc(22) atoms. In the third Cu site, Cu(3) is bonded in a 9-coordinate geometry to one Sc(20), one Sc(3), one Sc(7), two equivalent Sc(1), two equivalent Sc(21), and two equivalent Sc(9) atoms. There are nine inequivalent Te sites. In the first Te site, Te(1) is bonded in a 8-coordinate geometry to one Sc(18), one Sc(22), two equivalent Sc(11), two equivalent Sc(15), and two equivalent Sc(19) atoms. In the second Te site, Te(2) is bonded in a 8-coordinate geometry to one Sc(17), one Sc(21), two equivalent Sc(12), two equivalent Sc(16), and two equivalent Sc(20) atoms. In the third Te site, Te(3) is bonded in a 8-coordinate geometry to one Sc(20), one Sc(24), two equivalent Sc(13), two equivalent Sc(17), and two equivalent Sc(9) atoms. In the fourth Te site, Te(4) is bonded in a 8-coordinate geometry to one Sc(19), one Sc(23), two equivalent Sc(10), two equivalent Sc(14), and two equivalent Sc(18) atoms. In the fifth Te site, Te(5) is bonded to one Sc(17), one Sc(5), one Sc(9), two equivalent Sc(16), and two equivalent Sc(3) atoms to form distorted edge-sharing TeSc7 pentagonal bipyramids. In the sixth Te site, Te(6) is bonded to one Sc(10), one Sc(18), one Sc(6), two equivalent Sc(15), and two equivalent Sc(4) atoms to form distorted edge-sharing TeSc7 pentagonal bipyramids. In the seventh Te site, Te(7) is bonded to one Sc(11), one Sc(19), one Sc(7), two equivalent Sc(1), and two equivalent Sc(14) atoms to form distorted edge-sharing TeSc7 pentagonal bipyramids. In the eighth Te site, Te(8) is bonded in a 7-coordinate geometry to one Sc(12), one Sc(20), one Sc(8), two equivalent Sc(13), and two equivalent Sc(2) atoms. In the ninth Te site, Te(9) is bonded in a 9-coordinate geometry to one Sc(17), one Sc(2), one Sc(6), two equivalent Sc(12), two equivalent Sc(24), and two equivalent Sc(4) atoms. is represented by the CIF file [CIF]
data_Sc8CuTe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.852
_cell_length_b   10.747
_cell_length_c   20.205
_cell_angle_alpha   89.962
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   836.354
_cell_formula_units_Z   3
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
  Sc  Sc0  1  0.500  0.121  0.023  1.0
  Sc  Sc1  1  0.500  0.374  0.524  1.0
  Sc  Sc2  1  0.000  0.880  0.976  1.0
  Sc  Sc3  1  0.000  0.609  0.466  1.0
  Sc  Sc4  1  0.500  0.610  0.993  1.0
  Sc  Sc5  1  0.500  0.893  0.491  1.0
  Sc  Sc6  1  0.000  0.390  0.007  1.0
  Sc  Sc7  1  0.000  0.110  0.508  1.0
  Sc  Sc8  1  0.500  0.040  0.846  1.0
  Sc  Sc9  1  0.500  0.460  0.345  1.0
  Sc  Sc10  1  0.000  0.959  0.154  1.0
  Sc  Sc11  1  0.000  0.529  0.663  1.0
  Sc  Sc12  1  0.500  0.067  0.638  1.0
  Sc  Sc13  1  0.500  0.434  0.138  1.0
  Sc  Sc14  1  0.000  0.935  0.362  1.0
  Sc  Sc15  1  0.000  0.568  0.863  1.0
  Sc  Sc16  1  0.500  0.749  0.730  1.0
  Sc  Sc17  1  0.500  0.751  0.229  1.0
  Sc  Sc18  1  0.000  0.252  0.270  1.0
  Sc  Sc19  1  0.000  0.249  0.770  1.0
  Sc  Sc20  1  0.500  0.321  0.893  1.0
  Sc  Sc21  1  0.500  0.177  0.393  1.0
  Sc  Sc22  1  0.000  0.678  0.108  1.0
  Sc  Sc23  1  0.000  0.841  0.608  1.0
  Cu  Cu24  1  0.500  0.856  0.076  1.0
  Cu  Cu25  1  0.000  0.353  0.424  1.0
  Cu  Cu26  1  0.000  0.144  0.924  1.0
  Te  Te27  1  0.500  0.035  0.263  1.0
  Te  Te28  1  0.500  0.463  0.765  1.0
  Te  Te29  1  0.000  0.967  0.738  1.0
  Te  Te30  1  0.000  0.534  0.238  1.0
  Te  Te31  1  0.500  0.774  0.875  1.0
  Te  Te32  1  0.500  0.728  0.374  1.0
  Te  Te33  1  0.000  0.226  0.125  1.0
  Te  Te34  1  0.000  0.276  0.625  1.0
  Te  Te35  1  0.500  0.645  0.574  1.0
[/CIF]
.