The structure described by Cu7Te2(SO10)2 crystallizes in the triclinic P-1 space group. There are five inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(10), one O(2), one O(6), one O(7), and one O(8) atom to form distorted CuO5 square pyramids that share corners with two equivalent S(1)O4 tetrahedra and  an edgeedge with one Cu(5)O6 octahedra. In the second Cu site, Cu(2) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(3), one O(4), and one O(7) atom. In the third Cu site, Cu(3) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(5) atoms. In the fourth Cu site, Cu(4) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(4) atoms. In the fifth Cu site, Cu(5) is bonded to two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms to form distorted CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra and edges with two equivalent Cu(1)O5 square pyramids. Te(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(5), and one O(6) atom. S(1) is bonded to one O(10), one O(3), one O(8), and one O(9) atom to form SO4 tetrahedra that share  a cornercorner with one Cu(5)O6 octahedra and corners with two equivalent Cu(1)O5 square pyramids. The corner-sharing octahedral tilt angles are 44°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cu(2), one Cu(4), and one Te(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cu(1), one Cu(3), and one Te(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Cu(2), one Cu(5), and one S(1) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Cu(2) and one Cu(4) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Cu(3) and one Te(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(5), and one Te(1) atom. In the seventh O site, O(7) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Cu(2), and one Cu(5) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Cu(1) and one S(1) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one S(1) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Cu(1) and one S(1) atom. is represented by the CIF file [CIF]
data_Cu7Te2(SO10)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.081
_cell_length_b   7.617
_cell_length_c   7.945
_cell_angle_alpha   78.229
_cell_angle_beta   77.939
_cell_angle_gamma   86.013
_symmetry_Int_Tables_number   1
_cell_volume   410.138
_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
  Cu  Cu0  1  0.381  0.828  0.802  1.0
  Cu  Cu1  1  0.619  0.172  0.198  1.0
  Cu  Cu2  1  0.753  0.527  0.262  1.0
  Cu  Cu3  1  0.247  0.473  0.738  1.0
  Cu  Cu4  1  0.000  0.000  0.000  1.0
  Cu  Cu5  1  0.000  0.500  0.500  1.0
  Cu  Cu6  1  0.500  0.500  0.000  1.0
  Te  Te7  1  0.875  0.813  0.758  1.0
  Te  Te8  1  0.125  0.187  0.242  1.0
  S  S9  1  0.607  0.217  0.665  1.0
  S  S10  1  0.393  0.783  0.335  1.0
  O  O11  1  0.997  0.576  0.721  1.0
  O  O12  1  0.003  0.424  0.279  1.0
  O  O13  1  0.135  0.940  0.788  1.0
  O  O14  1  0.865  0.060  0.212  1.0
  O  O15  1  0.492  0.364  0.751  1.0
  O  O16  1  0.508  0.636  0.249  1.0
  O  O17  1  0.798  0.633  0.434  1.0
  O  O18  1  0.202  0.367  0.566  1.0
  O  O19  1  0.849  0.809  0.003  1.0
  O  O20  1  0.151  0.191  0.997  1.0
  O  O21  1  0.618  0.689  0.826  1.0
  O  O22  1  0.382  0.311  0.174  1.0
  O  O23  1  0.282  0.597  0.908  1.0
  O  O24  1  0.718  0.403  0.092  1.0
  O  O25  1  0.535  0.038  0.770  1.0
  O  O26  1  0.465  0.962  0.230  1.0
  O  O27  1  0.806  0.229  0.691  1.0
  O  O28  1  0.194  0.771  0.309  1.0
  O  O29  1  0.592  0.242  0.481  1.0
  O  O30  1  0.408  0.758  0.519  1.0
[/CIF]
.
The structure described by Cu7Te2(SO10)2 crystallizes in the triclinic P-1 space group. There are five inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(10), one O(2), one O(6), one O(7), and one O(8) atom to form distorted CuO5 square pyramids that share corners with two equivalent S(1)O4 tetrahedra and  an edgeedge with one Cu(5)O6 octahedra. In the second Cu site, Cu(2) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(3), one O(4), and one O(7) atom. In the third Cu site, Cu(3) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(5) atoms. In the fourth Cu site, Cu(4) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(4) atoms. In the fifth Cu site, Cu(5) is bonded to two equivalent O(3), two equivalent O(6), and two equivalent O(7) atoms to form distorted CuO6 octahedra that share corners with two equivalent S(1)O4 tetrahedra and edges with two equivalent Cu(1)O5 square pyramids. Te(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(5), and one O(6) atom. S(1) is bonded to one O(10), one O(3), one O(8), and one O(9) atom to form SO4 tetrahedra that share  a cornercorner with one Cu(5)O6 octahedra and corners with two equivalent Cu(1)O5 square pyramids. The corner-sharing octahedral tilt angles are 44°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cu(2), one Cu(4), and one Te(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cu(1), one Cu(3), and one Te(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Cu(2), one Cu(5), and one S(1) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Cu(2) and one Cu(4) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Cu(3) and one Te(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(5), and one Te(1) atom. In the seventh O site, O(7) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Cu(2), and one Cu(5) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Cu(1) and one S(1) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one S(1) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Cu(1) and one S(1) atom. is represented by the CIF file [CIF]
data_Cu7Te2(SO10)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.081
_cell_length_b   7.617
_cell_length_c   7.945
_cell_angle_alpha   78.229
_cell_angle_beta   77.939
_cell_angle_gamma   86.013
_symmetry_Int_Tables_number   1
_cell_volume   410.138
_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
  Cu  Cu0  1  0.381  0.828  0.802  1.0
  Cu  Cu1  1  0.619  0.172  0.198  1.0
  Cu  Cu2  1  0.753  0.527  0.262  1.0
  Cu  Cu3  1  0.247  0.473  0.738  1.0
  Cu  Cu4  1  0.000  0.000  0.000  1.0
  Cu  Cu5  1  0.000  0.500  0.500  1.0
  Cu  Cu6  1  0.500  0.500  0.000  1.0
  Te  Te7  1  0.875  0.813  0.758  1.0
  Te  Te8  1  0.125  0.187  0.242  1.0
  S  S9  1  0.607  0.217  0.665  1.0
  S  S10  1  0.393  0.783  0.335  1.0
  O  O11  1  0.997  0.576  0.721  1.0
  O  O12  1  0.003  0.424  0.279  1.0
  O  O13  1  0.135  0.940  0.788  1.0
  O  O14  1  0.865  0.060  0.212  1.0
  O  O15  1  0.492  0.364  0.751  1.0
  O  O16  1  0.508  0.636  0.249  1.0
  O  O17  1  0.798  0.633  0.434  1.0
  O  O18  1  0.202  0.367  0.566  1.0
  O  O19  1  0.849  0.809  0.003  1.0
  O  O20  1  0.151  0.191  0.997  1.0
  O  O21  1  0.618  0.689  0.826  1.0
  O  O22  1  0.382  0.311  0.174  1.0
  O  O23  1  0.282  0.597  0.908  1.0
  O  O24  1  0.718  0.403  0.092  1.0
  O  O25  1  0.535  0.038  0.770  1.0
  O  O26  1  0.465  0.962  0.230  1.0
  O  O27  1  0.806  0.229  0.691  1.0
  O  O28  1  0.194  0.771  0.309  1.0
  O  O29  1  0.592  0.242  0.481  1.0
  O  O30  1  0.408  0.758  0.519  1.0
[/CIF]
.