The structure described by Cr4Cu3Te8 crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one Cu(2), one Te(2), one Te(3), two equivalent Te(1), and two equivalent Te(4) atoms to form distorted CrCuTe6 pentagonal bipyramids that share corners with two equivalent Te(4)Cr3Cu2 square pyramids, corners with two equivalent Cu(1)CuTe4 tetrahedra, corners with three equivalent Cu(3)Te4 tetrahedra, edges with four equivalent Cr(2)Te6 octahedra,  an edgeedge with one Cr(1)CuTe6 pentagonal bipyramid,  an edgeedge with one Cu(1)CuTe4 tetrahedra, and  a faceface with one Cr(1)CuTe6 pentagonal bipyramid. In the second Cr site, Cr(2) is bonded to one Te(1), one Te(4), two equivalent Te(2), and two equivalent Te(3) atoms to form CrTe6 octahedra that share corners with three equivalent Cu(1)CuTe4 tetrahedra, corners with three equivalent Cu(3)Te4 tetrahedra, edges with two equivalent Cr(2)Te6 octahedra, and edges with four equivalent Cr(1)CuTe6 pentagonal bipyramids. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one Cu(2), two equivalent Te(1), and two equivalent Te(2) atoms to form distorted CuCuTe4 tetrahedra that share corners with six equivalent Cr(2)Te6 octahedra, corners with four equivalent Cr(1)CuTe6 pentagonal bipyramids, corners with two equivalent Te(4)Cr3Cu2 square pyramids, and edges with two equivalent Cr(1)CuTe6 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 56-59°. In the second Cu site, Cu(2) is bonded in a 7-coordinate geometry to two equivalent Cr(1), one Cu(1), two equivalent Te(2), and two equivalent Te(4) atoms. In the third Cu site, Cu(3) is bonded to two equivalent Te(3) and two equivalent Te(4) atoms to form CuTe4 tetrahedra that share corners with six equivalent Cr(2)Te6 octahedra and corners with six equivalent Cr(1)CuTe6 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 53-57°. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded to one Cr(2), two equivalent Cr(1), and one Cu(1) atom to form distorted TeCr3Cu trigonal pyramids that share corners with five equivalent Te(4)Cr3Cu2 square pyramids,  a cornercorner with one Te(1)Cr3Cu trigonal pyramid, corners with four equivalent Te(3)Cr3Cu trigonal pyramids, and  an edgeedge with one Te(1)Cr3Cu trigonal pyramid. In the second Te site, Te(2) is bonded in a 5-coordinate geometry to one Cr(1), two equivalent Cr(2), one Cu(1), and one Cu(2) atom. In the third Te site, Te(3) is bonded to one Cr(1), two equivalent Cr(2), and one Cu(3) atom to form distorted TeCr3Cu trigonal pyramids that share corners with two equivalent Te(4)Cr3Cu2 square pyramids,  a cornercorner with one Te(3)Cr3Cu trigonal pyramid, corners with four equivalent Te(1)Cr3Cu trigonal pyramids, edges with two equivalent Te(4)Cr3Cu2 square pyramids, and  an edgeedge with one Te(3)Cr3Cu trigonal pyramid. In the fourth Te site, Te(4) is bonded to one Cr(2), two equivalent Cr(1), one Cu(2), and one Cu(3) atom to form distorted TeCr3Cu2 square pyramids that share corners with two equivalent Cr(1)CuTe6 pentagonal bipyramids,  a cornercorner with one Te(4)Cr3Cu2 square pyramid,  a cornercorner with one Cu(1)CuTe4 tetrahedra, corners with two equivalent Te(3)Cr3Cu trigonal pyramids, corners with five equivalent Te(1)Cr3Cu trigonal pyramids, edges with two equivalent Te(3)Cr3Cu trigonal pyramids, and  a faceface with one Te(4)Cr3Cu2 square pyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr4Cu3Te8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.012
_cell_length_b   8.012
_cell_length_c   8.012
_cell_angle_alpha   120.042
_cell_angle_beta   119.874
_cell_angle_gamma   90.072
_symmetry_Int_Tables_number   1
_cell_volume   363.935
_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
  Cr  Cr0  1  0.755  0.512  0.757  1.0
  Cr  Cr1  1  0.761  0.504  0.257  1.0
  Cr  Cr2  1  0.247  0.504  0.743  1.0
  Cr  Cr3  1  0.755  0.998  0.243  1.0
  Cu  Cu4  1  0.375  0.875  0.500  1.0
  Cu  Cu5  1  0.611  0.111  0.500  1.0
  Cu  Cu6  1  0.124  0.124  0.000  1.0
  Te  Te7  1  0.979  0.743  0.235  1.0
  Te  Te8  1  0.501  0.725  0.224  1.0
  Te  Te9  1  0.508  0.743  0.765  1.0
  Te  Te10  1  0.501  0.278  0.776  1.0
  Te  Te11  1  0.993  0.729  0.736  1.0
  Te  Te12  1  0.993  0.258  0.264  1.0
  Te  Te13  1  0.005  0.262  0.743  1.0
  Te  Te14  1  0.519  0.262  0.257  1.0
[/CIF]
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The structure described by Cr4Cu3Te8 crystallizes in the orthorhombic Imm2 space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one Cu(2), one Te(2), one Te(3), two equivalent Te(1), and two equivalent Te(4) atoms to form distorted CrCuTe6 pentagonal bipyramids that share corners with two equivalent Te(4)Cr3Cu2 square pyramids, corners with two equivalent Cu(1)CuTe4 tetrahedra, corners with three equivalent Cu(3)Te4 tetrahedra, edges with four equivalent Cr(2)Te6 octahedra,  an edgeedge with one Cr(1)CuTe6 pentagonal bipyramid,  an edgeedge with one Cu(1)CuTe4 tetrahedra, and  a faceface with one Cr(1)CuTe6 pentagonal bipyramid. In the second Cr site, Cr(2) is bonded to one Te(1), one Te(4), two equivalent Te(2), and two equivalent Te(3) atoms to form CrTe6 octahedra that share corners with three equivalent Cu(1)CuTe4 tetrahedra, corners with three equivalent Cu(3)Te4 tetrahedra, edges with two equivalent Cr(2)Te6 octahedra, and edges with four equivalent Cr(1)CuTe6 pentagonal bipyramids. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one Cu(2), two equivalent Te(1), and two equivalent Te(2) atoms to form distorted CuCuTe4 tetrahedra that share corners with six equivalent Cr(2)Te6 octahedra, corners with four equivalent Cr(1)CuTe6 pentagonal bipyramids, corners with two equivalent Te(4)Cr3Cu2 square pyramids, and edges with two equivalent Cr(1)CuTe6 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 56-59°. In the second Cu site, Cu(2) is bonded in a 7-coordinate geometry to two equivalent Cr(1), one Cu(1), two equivalent Te(2), and two equivalent Te(4) atoms. In the third Cu site, Cu(3) is bonded to two equivalent Te(3) and two equivalent Te(4) atoms to form CuTe4 tetrahedra that share corners with six equivalent Cr(2)Te6 octahedra and corners with six equivalent Cr(1)CuTe6 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 53-57°. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded to one Cr(2), two equivalent Cr(1), and one Cu(1) atom to form distorted TeCr3Cu trigonal pyramids that share corners with five equivalent Te(4)Cr3Cu2 square pyramids,  a cornercorner with one Te(1)Cr3Cu trigonal pyramid, corners with four equivalent Te(3)Cr3Cu trigonal pyramids, and  an edgeedge with one Te(1)Cr3Cu trigonal pyramid. In the second Te site, Te(2) is bonded in a 5-coordinate geometry to one Cr(1), two equivalent Cr(2), one Cu(1), and one Cu(2) atom. In the third Te site, Te(3) is bonded to one Cr(1), two equivalent Cr(2), and one Cu(3) atom to form distorted TeCr3Cu trigonal pyramids that share corners with two equivalent Te(4)Cr3Cu2 square pyramids,  a cornercorner with one Te(3)Cr3Cu trigonal pyramid, corners with four equivalent Te(1)Cr3Cu trigonal pyramids, edges with two equivalent Te(4)Cr3Cu2 square pyramids, and  an edgeedge with one Te(3)Cr3Cu trigonal pyramid. In the fourth Te site, Te(4) is bonded to one Cr(2), two equivalent Cr(1), one Cu(2), and one Cu(3) atom to form distorted TeCr3Cu2 square pyramids that share corners with two equivalent Cr(1)CuTe6 pentagonal bipyramids,  a cornercorner with one Te(4)Cr3Cu2 square pyramid,  a cornercorner with one Cu(1)CuTe4 tetrahedra, corners with two equivalent Te(3)Cr3Cu trigonal pyramids, corners with five equivalent Te(1)Cr3Cu trigonal pyramids, edges with two equivalent Te(3)Cr3Cu trigonal pyramids, and  a faceface with one Te(4)Cr3Cu2 square pyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr4Cu3Te8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.012
_cell_length_b   8.012
_cell_length_c   8.012
_cell_angle_alpha   120.042
_cell_angle_beta   119.874
_cell_angle_gamma   90.072
_symmetry_Int_Tables_number   1
_cell_volume   363.935
_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
  Cr  Cr0  1  0.755  0.512  0.757  1.0
  Cr  Cr1  1  0.761  0.504  0.257  1.0
  Cr  Cr2  1  0.247  0.504  0.743  1.0
  Cr  Cr3  1  0.755  0.998  0.243  1.0
  Cu  Cu4  1  0.375  0.875  0.500  1.0
  Cu  Cu5  1  0.611  0.111  0.500  1.0
  Cu  Cu6  1  0.124  0.124  0.000  1.0
  Te  Te7  1  0.979  0.743  0.235  1.0
  Te  Te8  1  0.501  0.725  0.224  1.0
  Te  Te9  1  0.508  0.743  0.765  1.0
  Te  Te10  1  0.501  0.278  0.776  1.0
  Te  Te11  1  0.993  0.729  0.736  1.0
  Te  Te12  1  0.993  0.258  0.264  1.0
  Te  Te13  1  0.005  0.262  0.743  1.0
  Te  Te14  1  0.519  0.262  0.257  1.0
[/CIF]
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