The crystal structure described by Cu13Si2(SbO14)2 crystallizes in the triclinic P-1 space group. There are seven inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(12), one O(2), one O(7), and one O(8) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one Cu(4)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cu(7)O5 square pyramid,  a cornercorner with one Si(1)O4 tetrahedra, and corners with two equivalent Cu(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 57-61°. In the second Cu site, Cu(2) is bonded to one O(1), one O(10), one O(11), one O(3), and one O(7) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cu(7)O5 square pyramid, corners with three equivalent Si(1)O4 tetrahedra, and corners with two equivalent Cu(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 56°. In the third Cu site, Cu(3) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(13), one O(14), and one O(8) atom. In the fourth Cu site, Cu(4) is bonded to one O(12), one O(13), two equivalent O(5), and two equivalent O(9) atoms to form CuO6 octahedra that share  a cornercorner with one Cu(1)O5 trigonal bipyramid, edges with two equivalent Cu(4)O6 octahedra, edges with three equivalent Sb(1)O6 octahedra, and  an edgeedge with one Cu(7)O5 square pyramid. In the fifth Cu site, Cu(5) is bonded in a rectangular see-saw-like geometry to one O(3), one O(6), one O(7), and one O(8) atom. In the sixth Cu site, Cu(6) is bonded in a 8-coordinate geometry to two equivalent O(10), two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms. In the seventh Cu site, Cu(7) is bonded to one O(10), one O(12), one O(13), one O(4), and one O(6) atom to form distorted CuO5 square pyramids that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  an edgeedge with one Cu(4)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. Si(1) is bonded to one O(11), one O(3), one O(4), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Cu(7)O5 square pyramid,  a cornercorner with one Cu(1)O5 trigonal bipyramid, and corners with three equivalent Cu(2)O5 trigonal bipyramids. Sb(1) is bonded to one O(10), one O(12), one O(13), one O(5), one O(6), and one O(9) atom to form SbO6 octahedra that share  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid, edges with three equivalent Cu(4)O6 octahedra, and edges with two equivalent Cu(7)O5 square pyramids. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Cu(2), and one Cu(3) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(1) and one O(14) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Cu(2), one Cu(5), one Cu(6), and one Si(1) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Cu(6), one Cu(7), and one Si(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cu(4) and one Sb(1) atom. In the sixth O site, O(6) is bonded to one Cu(5), one Cu(6), one Cu(7), and one Sb(1) atom to form distorted corner-sharing OCu3Sb tetrahedra. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(2), one Cu(5), and one Si(1) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Cu(3), and one Cu(5) atom. In the ninth O site, O(9) is bonded in a trigonal non-coplanar geometry to two equivalent Cu(4) and one Sb(1) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Cu(2), one Cu(6), one Cu(7), and one Sb(1) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Cu(2) and one Si(1) atom. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Cu(1), one Cu(4), one Cu(7), and one Sb(1) atom. In the thirteenth O site, O(13) is bonded in a distorted rectangular see-saw-like geometry to one Cu(3), one Cu(4), one Cu(7), and one Sb(1) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Cu(3) and one O(2) atom. is represented by the CIF file [CIF]
data_Cu13Si2(SbO14)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.403
_cell_length_b   7.980
_cell_length_c   12.043
_cell_angle_alpha   88.043
_cell_angle_beta   81.278
_cell_angle_gamma   82.906
_symmetry_Int_Tables_number   1
_cell_volume   509.323
_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  0.973  0.611  0.671  1.0
  Cu  Cu1  1  0.667  0.370  0.143  1.0
  Cu  Cu2  1  0.385  0.367  0.682  1.0
  Cu  Cu3  1  0.028  0.388  0.329  1.0
  Cu  Cu4  1  0.334  0.628  0.858  1.0
  Cu  Cu5  1  0.271  0.004  0.439  1.0
  Cu  Cu6  1  0.123  0.648  0.153  1.0
  Cu  Cu7  1  0.001  0.999  0.000  1.0
  Cu  Cu8  1  0.392  0.996  0.169  1.0
  Cu  Cu9  1  0.877  0.350  0.847  1.0
  Cu  Cu10  1  0.616  0.631  0.318  1.0
  Cu  Cu11  1  0.609  0.002  0.831  1.0
  Cu  Cu12  1  0.730  0.994  0.561  1.0
  Si  Si13  1  0.205  0.316  0.015  1.0
  Si  Si14  1  0.796  0.682  0.985  1.0
  Sb  Sb15  1  0.823  0.012  0.306  1.0
  Sb  Sb16  1  0.178  0.986  0.695  1.0
  O  O17  1  0.696  0.402  0.295  1.0
  O  O18  1  0.270  0.428  0.421  1.0
  O  O19  1  0.896  0.319  0.003  1.0
  O  O20  1  0.282  0.110  0.032  1.0
  O  O21  1  0.730  0.570  0.580  1.0
  O  O22  1  0.305  0.596  0.705  1.0
  O  O23  1  0.033  0.119  0.568  1.0
  O  O24  1  0.968  0.880  0.432  1.0
  O  O25  1  0.719  0.889  0.968  1.0
  O  O26  1  0.076  0.886  0.177  1.0
  O  O27  1  0.236  0.411  0.131  1.0
  O  O28  1  0.977  0.618  0.300  1.0
  O  O29  1  0.420  0.877  0.564  1.0
  O  O30  1  0.670  0.129  0.176  1.0
  O  O31  1  0.643  0.614  0.102  1.0
  O  O32  1  0.105  0.679  0.998  1.0
  O  O33  1  0.331  0.869  0.824  1.0
  O  O34  1  0.924  0.113  0.824  1.0
  O  O35  1  0.581  0.122  0.436  1.0
  O  O36  1  0.105  0.152  0.320  1.0
  O  O37  1  0.896  0.847  0.681  1.0
  O  O38  1  0.358  0.384  0.898  1.0
  O  O39  1  0.474  0.128  0.698  1.0
  O  O40  1  0.678  0.414  0.584  1.0
  O  O41  1  0.765  0.587  0.870  1.0
  O  O42  1  0.527  0.871  0.303  1.0
  O  O43  1  0.024  0.381  0.700  1.0
  O  O44  1  0.323  0.585  0.417  1.0
[/CIF]
.
The crystal structure described by Cu13Si2(SbO14)2 crystallizes in the triclinic P-1 space group. There are seven inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(12), one O(2), one O(7), and one O(8) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one Cu(4)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cu(7)O5 square pyramid,  a cornercorner with one Si(1)O4 tetrahedra, and corners with two equivalent Cu(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 57-61°. In the second Cu site, Cu(2) is bonded to one O(1), one O(10), one O(11), one O(3), and one O(7) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Cu(7)O5 square pyramid, corners with three equivalent Si(1)O4 tetrahedra, and corners with two equivalent Cu(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 56°. In the third Cu site, Cu(3) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(13), one O(14), and one O(8) atom. In the fourth Cu site, Cu(4) is bonded to one O(12), one O(13), two equivalent O(5), and two equivalent O(9) atoms to form CuO6 octahedra that share  a cornercorner with one Cu(1)O5 trigonal bipyramid, edges with two equivalent Cu(4)O6 octahedra, edges with three equivalent Sb(1)O6 octahedra, and  an edgeedge with one Cu(7)O5 square pyramid. In the fifth Cu site, Cu(5) is bonded in a rectangular see-saw-like geometry to one O(3), one O(6), one O(7), and one O(8) atom. In the sixth Cu site, Cu(6) is bonded in a 8-coordinate geometry to two equivalent O(10), two equivalent O(3), two equivalent O(4), and two equivalent O(6) atoms. In the seventh Cu site, Cu(7) is bonded to one O(10), one O(12), one O(13), one O(4), and one O(6) atom to form distorted CuO5 square pyramids that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  an edgeedge with one Cu(4)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. Si(1) is bonded to one O(11), one O(3), one O(4), and one O(7) atom to form SiO4 tetrahedra that share  a cornercorner with one Cu(7)O5 square pyramid,  a cornercorner with one Cu(1)O5 trigonal bipyramid, and corners with three equivalent Cu(2)O5 trigonal bipyramids. Sb(1) is bonded to one O(10), one O(12), one O(13), one O(5), one O(6), and one O(9) atom to form SbO6 octahedra that share  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid, edges with three equivalent Cu(4)O6 octahedra, and edges with two equivalent Cu(7)O5 square pyramids. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Cu(2), and one Cu(3) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(1) and one O(14) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Cu(2), one Cu(5), one Cu(6), and one Si(1) atom. In the fourth O site, O(4) is bonded in a trigonal non-coplanar geometry to one Cu(6), one Cu(7), and one Si(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cu(4) and one Sb(1) atom. In the sixth O site, O(6) is bonded to one Cu(5), one Cu(6), one Cu(7), and one Sb(1) atom to form distorted corner-sharing OCu3Sb tetrahedra. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(2), one Cu(5), and one Si(1) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Cu(3), and one Cu(5) atom. In the ninth O site, O(9) is bonded in a trigonal non-coplanar geometry to two equivalent Cu(4) and one Sb(1) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Cu(2), one Cu(6), one Cu(7), and one Sb(1) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Cu(2) and one Si(1) atom. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Cu(1), one Cu(4), one Cu(7), and one Sb(1) atom. In the thirteenth O site, O(13) is bonded in a distorted rectangular see-saw-like geometry to one Cu(3), one Cu(4), one Cu(7), and one Sb(1) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Cu(3) and one O(2) atom. is represented by the CIF file [CIF]
data_Cu13Si2(SbO14)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.403
_cell_length_b   7.980
_cell_length_c   12.043
_cell_angle_alpha   88.043
_cell_angle_beta   81.278
_cell_angle_gamma   82.906
_symmetry_Int_Tables_number   1
_cell_volume   509.323
_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  0.973  0.611  0.671  1.0
  Cu  Cu1  1  0.667  0.370  0.143  1.0
  Cu  Cu2  1  0.385  0.367  0.682  1.0
  Cu  Cu3  1  0.028  0.388  0.329  1.0
  Cu  Cu4  1  0.334  0.628  0.858  1.0
  Cu  Cu5  1  0.271  0.004  0.439  1.0
  Cu  Cu6  1  0.123  0.648  0.153  1.0
  Cu  Cu7  1  0.001  0.999  0.000  1.0
  Cu  Cu8  1  0.392  0.996  0.169  1.0
  Cu  Cu9  1  0.877  0.350  0.847  1.0
  Cu  Cu10  1  0.616  0.631  0.318  1.0
  Cu  Cu11  1  0.609  0.002  0.831  1.0
  Cu  Cu12  1  0.730  0.994  0.561  1.0
  Si  Si13  1  0.205  0.316  0.015  1.0
  Si  Si14  1  0.796  0.682  0.985  1.0
  Sb  Sb15  1  0.823  0.012  0.306  1.0
  Sb  Sb16  1  0.178  0.986  0.695  1.0
  O  O17  1  0.696  0.402  0.295  1.0
  O  O18  1  0.270  0.428  0.421  1.0
  O  O19  1  0.896  0.319  0.003  1.0
  O  O20  1  0.282  0.110  0.032  1.0
  O  O21  1  0.730  0.570  0.580  1.0
  O  O22  1  0.305  0.596  0.705  1.0
  O  O23  1  0.033  0.119  0.568  1.0
  O  O24  1  0.968  0.880  0.432  1.0
  O  O25  1  0.719  0.889  0.968  1.0
  O  O26  1  0.076  0.886  0.177  1.0
  O  O27  1  0.236  0.411  0.131  1.0
  O  O28  1  0.977  0.618  0.300  1.0
  O  O29  1  0.420  0.877  0.564  1.0
  O  O30  1  0.670  0.129  0.176  1.0
  O  O31  1  0.643  0.614  0.102  1.0
  O  O32  1  0.105  0.679  0.998  1.0
  O  O33  1  0.331  0.869  0.824  1.0
  O  O34  1  0.924  0.113  0.824  1.0
  O  O35  1  0.581  0.122  0.436  1.0
  O  O36  1  0.105  0.152  0.320  1.0
  O  O37  1  0.896  0.847  0.681  1.0
  O  O38  1  0.358  0.384  0.898  1.0
  O  O39  1  0.474  0.128  0.698  1.0
  O  O40  1  0.678  0.414  0.584  1.0
  O  O41  1  0.765  0.587  0.870  1.0
  O  O42  1  0.527  0.871  0.303  1.0
  O  O43  1  0.024  0.381  0.700  1.0
  O  O44  1  0.323  0.585  0.417  1.0
[/CIF]
.