The compound described by Cu13Si2(SbO14)2 crystallizes in the triclinic P1 space group. There are thirteen inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(21), one O(25), one O(27), one O(5), and one O(6) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Cu(13)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Cu(5)O5 trigonal bipyramids,  an edgeedge with one Cu(10)O5 trigonal bipyramid, and  an edgeedge with one Cu(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 54-62°. In the second Cu site, Cu(2) is bonded to one O(1), one O(11), one O(14), one O(15), and one O(3) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Cu(10)O5 trigonal bipyramid, corners with two equivalent Cu(4)O5 trigonal bipyramids,  an edgeedge with one Cu(11)O5 trigonal bipyramid, and  an edgeedge with one Cu(7)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-62°. In the third Cu site, Cu(3) is bonded to one O(22), one O(23), one O(24), one O(27), and one O(6) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Cu(13)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Cu(10)O5 trigonal bipyramids,  an edgeedge with one Cu(1)O5 trigonal bipyramid, and  an edgeedge with one Cu(5)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 54-62°. In the fourth Cu site, Cu(4) is bonded to one O(1), one O(11), one O(12), one O(2), and one O(20) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one Cu(6)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Cu(2)O5 trigonal bipyramids,  an edgeedge with one Cu(11)O5 trigonal bipyramid, and  an edgeedge with one Cu(7)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 54-62°. In the fifth Cu site, Cu(5) is bonded to one O(16), one O(17), one O(22), one O(25), and one O(6) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Cu(7)O5 trigonal bipyramid, corners with two equivalent Cu(1)O5 trigonal bipyramids,  an edgeedge with one Cu(10)O5 trigonal bipyramid, and  an edgeedge with one Cu(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-62°. In the sixth Cu site, Cu(6) is bonded to one O(13), one O(19), one O(20), one O(26), one O(7), and one O(8) atom to form CuO6 octahedra that share  a cornercorner with one Cu(11)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid,  an edgeedge with one Cu(9)O6 octahedra,  an edgeedge with one Sb(2)O6 octahedra, edges with two equivalent Cu(13)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. In the seventh Cu site, Cu(7) is bonded to one O(10), one O(11), one O(12), one O(15), and one O(16) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Cu(5)O5 trigonal bipyramid, corners with two equivalent Cu(11)O5 trigonal bipyramids,  an edgeedge with one Cu(2)O5 trigonal bipyramid, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-62°. In the eighth Cu site, Cu(8) is bonded in a 6-coordinate geometry to one O(10), one O(14), one O(17), one O(18), one O(4), and one O(9) atom. In the ninth Cu site, Cu(9) is bonded to one O(10), one O(14), one O(20), one O(26), one O(4), and one O(9) atom to form distorted CuO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Cu(11)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid,  a cornercorner with one Cu(7)O5 trigonal bipyramid,  an edgeedge with one Cu(12)O6 octahedra,  an edgeedge with one Cu(6)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. In the tenth Cu site, Cu(10) is bonded to one O(18), one O(22), one O(25), one O(27), and one O(3) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Cu(2)O5 trigonal bipyramid, corners with two equivalent Cu(3)O5 trigonal bipyramids,  an edgeedge with one Cu(1)O5 trigonal bipyramid, and  an edgeedge with one Cu(5)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-63°. In the eleventh Cu site, Cu(11) is bonded to one O(1), one O(12), one O(15), one O(26), and one O(28) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one Cu(6)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Cu(7)O5 trigonal bipyramids,  an edgeedge with one Cu(2)O5 trigonal bipyramid, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 54-62°. In the twelfth Cu site, Cu(12) is bonded to one O(17), one O(18), one O(21), one O(23), one O(4), and one O(9) atom to form distorted CuO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(10)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid,  a cornercorner with one Cu(5)O5 trigonal bipyramid,  an edgeedge with one Cu(13)O6 octahedra,  an edgeedge with one Cu(9)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. In the thirteenth Cu site, Cu(13) is bonded to one O(13), one O(19), one O(21), one O(23), one O(7), and one O(8) atom to form CuO6 octahedra that share  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid,  an edgeedge with one Cu(12)O6 octahedra,  an edgeedge with one Sb(1)O6 octahedra, edges with two equivalent Cu(6)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(11), one O(22), one O(3), and one O(4) atom to form SiO4 tetrahedra that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Cu(3)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid,  a cornercorner with one Cu(5)O5 trigonal bipyramid,  a cornercorner with one Cu(7)O5 trigonal bipyramid, corners with two equivalent Cu(10)O5 trigonal bipyramids, and corners with two equivalent Cu(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 63-65°. In the second Si site, Si(2) is bonded to one O(15), one O(16), one O(25), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(10)O5 trigonal bipyramid,  a cornercorner with one Cu(11)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid, corners with two equivalent Cu(5)O5 trigonal bipyramids, and corners with two equivalent Cu(7)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 63-64°. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(10), one O(14), one O(19), one O(20), one O(26), and one O(8) atom to form SbO6 octahedra that share  a cornercorner with one Cu(11)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid,  a cornercorner with one Cu(7)O5 trigonal bipyramid,  an edgeedge with one Cu(13)O6 octahedra, edges with two equivalent Cu(6)O6 octahedra, and edges with two equivalent Cu(9)O6 octahedra. In the second Sb site, Sb(2) is bonded to one O(13), one O(17), one O(18), one O(21), one O(23), and one O(7) atom to form SbO6 octahedra that share  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(10)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid,  a cornercorner with one Cu(5)O5 trigonal bipyramid,  an edgeedge with one Cu(6)O6 octahedra, edges with two equivalent Cu(12)O6 octahedra, and edges with two equivalent Cu(13)O6 octahedra. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Cu(11), one Cu(2), and one Cu(4) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(4) and one O(28) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Cu(10), one Cu(2), and one Si(1) atom. In the fourth O site, O(4) is bonded to one Cu(12), one Cu(8), one Cu(9), and one Si(1) atom to form distorted OCu3Si tetrahedra that share  a cornercorner with one O(9)Cu3Si tetrahedra, corners with two equivalent O(14)Cu3Sb tetrahedra, corners with two equivalent O(18)Cu3Sb tetrahedra,  an edgeedge with one O(10)Cu3Sb tetrahedra,  an edgeedge with one O(17)Cu3Sb tetrahedra, and  an edgeedge with one O(9)Cu3Si tetrahedra. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Cu(1) and one O(24) atom. In the sixth O site, O(6) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Cu(3), and one Cu(5) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Cu(13), one Cu(6), and one Sb(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Cu(13), one Cu(6), and one Sb(1) atom. In the ninth O site, O(9) is bonded to one Cu(12), one Cu(8), one Cu(9), and one Si(2) atom to form distorted OCu3Si tetrahedra that share  a cornercorner with one O(4)Cu3Si tetrahedra, corners with two equivalent O(10)Cu3Sb tetrahedra, corners with two equivalent O(17)Cu3Sb tetrahedra,  an edgeedge with one O(14)Cu3Sb tetrahedra,  an edgeedge with one O(18)Cu3Sb tetrahedra, and  an edgeedge with one O(4)Cu3Si tetrahedra. In the tenth O site, O(10) is bonded to one Cu(7), one Cu(8), one Cu(9), and one Sb(1) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(14)Cu3Sb tetrahedra,  a cornercorner with one O(17)Cu3Sb tetrahedra,  a cornercorner with one O(18)Cu3Sb tetrahedra, corners with two equivalent O(9)Cu3Si tetrahedra,  an edgeedge with one O(14)Cu3Sb tetrahedra, and  an edgeedge with one O(4)Cu3Si tetrahedra. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Cu(2), one Cu(4), one Cu(7), and one Si(1) atom. In the twelfth O site, O(12) is bonded in a trigonal non-coplanar geometry to one Cu(11), one Cu(4), and one Cu(7) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Cu(13), one Cu(6), and one Sb(2) atom. In the fourteenth O site, O(14) is bonded to one Cu(2), one Cu(8), one Cu(9), and one Sb(1) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra,  a cornercorner with one O(17)Cu3Sb tetrahedra,  a cornercorner with one O(18)Cu3Sb tetrahedra, corners with two equivalent O(4)Cu3Si tetrahedra,  an edgeedge with one O(10)Cu3Sb tetrahedra, and  an edgeedge with one O(9)Cu3Si tetrahedra. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Cu(11), one Cu(2), one Cu(7), and one Si(2) atom. In the sixteenth O site, O(16) is bonded in a trigonal planar geometry to one Cu(5), one Cu(7), and one Si(2) atom. In the seventeenth O site, O(17) is bonded to one Cu(12), one Cu(5), one Cu(8), and one Sb(2) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra,  a cornercorner with one O(14)Cu3Sb tetrahedra,  a cornercorner with one O(18)Cu3Sb tetrahedra, corners with two equivalent O(9)Cu3Si tetrahedra,  an edgeedge with one O(18)Cu3Sb tetrahedra, and  an edgeedge with one O(4)Cu3Si tetrahedra. In the eighteenth O site, O(18) is bonded to one Cu(10), one Cu(12), one Cu(8), and one Sb(2) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra,  a cornercorner with one O(14)Cu3Sb tetrahedra,  a cornercorner with one O(17)Cu3Sb tetrahedra, corners with two equivalent O(4)Cu3Si tetrahedra,  an edgeedge with one O(17)Cu3Sb tetrahedra, and  an edgeedge with one O(9)Cu3Si tetrahedra. In the nineteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one Cu(13), one Cu(6), and one Sb(1) atom. In the twentieth O site, O(20) is bonded in a distorted rectangular see-saw-like geometry to one Cu(4), one Cu(6), one Cu(9), and one Sb(1) atom. In the twenty-first O site, O(21) is bonded in a distorted rectangular see-saw-like geometry to one Cu(1), one Cu(12), one Cu(13), and one Sb(2) atom. In the twenty-second O site, O(22) is bonded in a 4-coordinate geometry to one Cu(10), one Cu(3), one Cu(5), and one Si(1) atom. In the twenty-third O site, O(23) is bonded in a distorted rectangular see-saw-like geometry to one Cu(12), one Cu(13), one Cu(3), and one Sb(2) atom. In the twenty-fourth O site, O(24) is bonded in a bent 120 degrees geometry to one Cu(3) and one O(5) atom. In the twenty-fifth O site, O(25) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(10), one Cu(5), and one Si(2) atom. In the twenty-sixth O site, O(26) is bonded in a distorted rectangular see-saw-like geometry to one Cu(11), one Cu(6), one Cu(9), and one Sb(1) atom. In the twenty-seventh O site, O(27) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Cu(10), and one Cu(3) atom. In the twenty-eighth O site, O(28) is bonded in a bent 120 degrees geometry to one Cu(11) 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   5.410
_cell_length_b   8.062
_cell_length_c   11.962
_cell_angle_alpha   88.153
_cell_angle_beta   77.120
_cell_angle_gamma   81.977
_symmetry_Int_Tables_number   1
_cell_volume   503.659
_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  0.953  0.621  0.679  1.0
  Cu  Cu1  1  0.667  0.361  0.148  1.0
  Cu  Cu2  1  0.372  0.375  0.680  1.0
  Cu  Cu3  1  0.047  0.377  0.322  1.0
  Cu  Cu4  1  0.336  0.637  0.852  1.0
  Cu  Cu5  1  0.282  1.000  0.437  1.0
  Cu  Cu6  1  0.187  0.638  0.149  1.0
  Cu  Cu7  1  0.000  1.000  1.000  1.0
  Cu  Cu8  1  0.421  0.999  0.158  1.0
  Cu  Cu9  1  0.815  0.360  0.852  1.0
  Cu  Cu10  1  0.628  0.623  0.321  1.0
  Cu  Cu11  1  0.580  0.000  0.842  1.0
  Cu  Cu12  1  0.720  0.999  0.564  1.0
  Si  Si13  1  0.221  0.320  0.001  1.0
  Si  Si14  1  0.779  0.680  0.999  1.0
  Sb  Sb15  1  0.849  1.000  0.302  1.0
  Sb  Sb16  1  0.153  0.998  0.699  1.0
  O  O17  1  0.712  0.393  0.297  1.0
  O  O18  1  0.268  0.422  0.417  1.0
  O  O19  1  0.911  0.341  0.000  1.0
  O  O20  1  0.296  0.112  0.003  1.0
  O  O21  1  0.732  0.576  0.583  1.0
  O  O22  1  0.287  0.605  0.704  1.0
  O  O23  1  0.020  0.119  0.568  1.0
  O  O24  1  0.981  0.879  0.432  1.0
  O  O25  1  0.704  0.887  0.998  1.0
  O  O26  1  0.122  0.878  0.169  1.0
  O  O27  1  0.273  0.394  0.120  1.0
  O  O28  1  0.987  0.607  0.296  1.0
  O  O29  1  0.415  0.879  0.568  1.0
  O  O30  1  0.710  0.121  0.169  1.0
  O  O31  1  0.606  0.607  0.118  1.0
  O  O32  1  0.088  0.657  1.000  1.0
  O  O33  1  0.294  0.878  0.832  1.0
  O  O34  1  0.879  0.119  0.831  1.0
  O  O35  1  0.587  0.119  0.433  1.0
  O  O36  1  0.135  0.140  0.307  1.0
  O  O37  1  0.867  0.858  0.693  1.0
  O  O38  1  0.394  0.391  0.882  1.0
  O  O39  1  0.446  0.137  0.695  1.0
  O  O40  1  0.687  0.421  0.583  1.0
  O  O41  1  0.726  0.606  0.880  1.0
  O  O42  1  0.556  0.861  0.306  1.0
  O  O43  1  0.014  0.391  0.703  1.0
  O  O44  1  0.313  0.579  0.416  1.0
[/CIF]
.
The compound described by Cu13Si2(SbO14)2 crystallizes in the triclinic P1 space group. There are thirteen inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(21), one O(25), one O(27), one O(5), and one O(6) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Cu(13)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Cu(5)O5 trigonal bipyramids,  an edgeedge with one Cu(10)O5 trigonal bipyramid, and  an edgeedge with one Cu(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 54-62°. In the second Cu site, Cu(2) is bonded to one O(1), one O(11), one O(14), one O(15), and one O(3) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Cu(10)O5 trigonal bipyramid, corners with two equivalent Cu(4)O5 trigonal bipyramids,  an edgeedge with one Cu(11)O5 trigonal bipyramid, and  an edgeedge with one Cu(7)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-62°. In the third Cu site, Cu(3) is bonded to one O(22), one O(23), one O(24), one O(27), and one O(6) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Cu(13)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Cu(10)O5 trigonal bipyramids,  an edgeedge with one Cu(1)O5 trigonal bipyramid, and  an edgeedge with one Cu(5)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 54-62°. In the fourth Cu site, Cu(4) is bonded to one O(1), one O(11), one O(12), one O(2), and one O(20) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one Cu(6)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Cu(2)O5 trigonal bipyramids,  an edgeedge with one Cu(11)O5 trigonal bipyramid, and  an edgeedge with one Cu(7)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 54-62°. In the fifth Cu site, Cu(5) is bonded to one O(16), one O(17), one O(22), one O(25), and one O(6) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Cu(7)O5 trigonal bipyramid, corners with two equivalent Cu(1)O5 trigonal bipyramids,  an edgeedge with one Cu(10)O5 trigonal bipyramid, and  an edgeedge with one Cu(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-62°. In the sixth Cu site, Cu(6) is bonded to one O(13), one O(19), one O(20), one O(26), one O(7), and one O(8) atom to form CuO6 octahedra that share  a cornercorner with one Cu(11)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid,  an edgeedge with one Cu(9)O6 octahedra,  an edgeedge with one Sb(2)O6 octahedra, edges with two equivalent Cu(13)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. In the seventh Cu site, Cu(7) is bonded to one O(10), one O(11), one O(12), one O(15), and one O(16) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Cu(5)O5 trigonal bipyramid, corners with two equivalent Cu(11)O5 trigonal bipyramids,  an edgeedge with one Cu(2)O5 trigonal bipyramid, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-62°. In the eighth Cu site, Cu(8) is bonded in a 6-coordinate geometry to one O(10), one O(14), one O(17), one O(18), one O(4), and one O(9) atom. In the ninth Cu site, Cu(9) is bonded to one O(10), one O(14), one O(20), one O(26), one O(4), and one O(9) atom to form distorted CuO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Cu(11)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid,  a cornercorner with one Cu(7)O5 trigonal bipyramid,  an edgeedge with one Cu(12)O6 octahedra,  an edgeedge with one Cu(6)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. In the tenth Cu site, Cu(10) is bonded to one O(18), one O(22), one O(25), one O(27), and one O(3) atom to form CuO5 trigonal bipyramids that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Sb(2)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra,  a cornercorner with one Cu(2)O5 trigonal bipyramid, corners with two equivalent Cu(3)O5 trigonal bipyramids,  an edgeedge with one Cu(1)O5 trigonal bipyramid, and  an edgeedge with one Cu(5)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 56-63°. In the eleventh Cu site, Cu(11) is bonded to one O(1), one O(12), one O(15), one O(26), and one O(28) atom to form distorted CuO5 trigonal bipyramids that share  a cornercorner with one Cu(6)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Cu(7)O5 trigonal bipyramids,  an edgeedge with one Cu(2)O5 trigonal bipyramid, and  an edgeedge with one Cu(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 54-62°. In the twelfth Cu site, Cu(12) is bonded to one O(17), one O(18), one O(21), one O(23), one O(4), and one O(9) atom to form distorted CuO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(10)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid,  a cornercorner with one Cu(5)O5 trigonal bipyramid,  an edgeedge with one Cu(13)O6 octahedra,  an edgeedge with one Cu(9)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. In the thirteenth Cu site, Cu(13) is bonded to one O(13), one O(19), one O(21), one O(23), one O(7), and one O(8) atom to form CuO6 octahedra that share  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid,  an edgeedge with one Cu(12)O6 octahedra,  an edgeedge with one Sb(1)O6 octahedra, edges with two equivalent Cu(6)O6 octahedra, and edges with two equivalent Sb(2)O6 octahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(11), one O(22), one O(3), and one O(4) atom to form SiO4 tetrahedra that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Cu(3)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid,  a cornercorner with one Cu(5)O5 trigonal bipyramid,  a cornercorner with one Cu(7)O5 trigonal bipyramid, corners with two equivalent Cu(10)O5 trigonal bipyramids, and corners with two equivalent Cu(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 63-65°. In the second Si site, Si(2) is bonded to one O(15), one O(16), one O(25), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Cu(12)O6 octahedra,  a cornercorner with one Cu(9)O6 octahedra,  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(10)O5 trigonal bipyramid,  a cornercorner with one Cu(11)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid, corners with two equivalent Cu(5)O5 trigonal bipyramids, and corners with two equivalent Cu(7)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 63-64°. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(10), one O(14), one O(19), one O(20), one O(26), and one O(8) atom to form SbO6 octahedra that share  a cornercorner with one Cu(11)O5 trigonal bipyramid,  a cornercorner with one Cu(2)O5 trigonal bipyramid,  a cornercorner with one Cu(4)O5 trigonal bipyramid,  a cornercorner with one Cu(7)O5 trigonal bipyramid,  an edgeedge with one Cu(13)O6 octahedra, edges with two equivalent Cu(6)O6 octahedra, and edges with two equivalent Cu(9)O6 octahedra. In the second Sb site, Sb(2) is bonded to one O(13), one O(17), one O(18), one O(21), one O(23), and one O(7) atom to form SbO6 octahedra that share  a cornercorner with one Cu(1)O5 trigonal bipyramid,  a cornercorner with one Cu(10)O5 trigonal bipyramid,  a cornercorner with one Cu(3)O5 trigonal bipyramid,  a cornercorner with one Cu(5)O5 trigonal bipyramid,  an edgeedge with one Cu(6)O6 octahedra, edges with two equivalent Cu(12)O6 octahedra, and edges with two equivalent Cu(13)O6 octahedra. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Cu(11), one Cu(2), and one Cu(4) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(4) and one O(28) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Cu(10), one Cu(2), and one Si(1) atom. In the fourth O site, O(4) is bonded to one Cu(12), one Cu(8), one Cu(9), and one Si(1) atom to form distorted OCu3Si tetrahedra that share  a cornercorner with one O(9)Cu3Si tetrahedra, corners with two equivalent O(14)Cu3Sb tetrahedra, corners with two equivalent O(18)Cu3Sb tetrahedra,  an edgeedge with one O(10)Cu3Sb tetrahedra,  an edgeedge with one O(17)Cu3Sb tetrahedra, and  an edgeedge with one O(9)Cu3Si tetrahedra. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Cu(1) and one O(24) atom. In the sixth O site, O(6) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Cu(3), and one Cu(5) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Cu(13), one Cu(6), and one Sb(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Cu(13), one Cu(6), and one Sb(1) atom. In the ninth O site, O(9) is bonded to one Cu(12), one Cu(8), one Cu(9), and one Si(2) atom to form distorted OCu3Si tetrahedra that share  a cornercorner with one O(4)Cu3Si tetrahedra, corners with two equivalent O(10)Cu3Sb tetrahedra, corners with two equivalent O(17)Cu3Sb tetrahedra,  an edgeedge with one O(14)Cu3Sb tetrahedra,  an edgeedge with one O(18)Cu3Sb tetrahedra, and  an edgeedge with one O(4)Cu3Si tetrahedra. In the tenth O site, O(10) is bonded to one Cu(7), one Cu(8), one Cu(9), and one Sb(1) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(14)Cu3Sb tetrahedra,  a cornercorner with one O(17)Cu3Sb tetrahedra,  a cornercorner with one O(18)Cu3Sb tetrahedra, corners with two equivalent O(9)Cu3Si tetrahedra,  an edgeedge with one O(14)Cu3Sb tetrahedra, and  an edgeedge with one O(4)Cu3Si tetrahedra. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Cu(2), one Cu(4), one Cu(7), and one Si(1) atom. In the twelfth O site, O(12) is bonded in a trigonal non-coplanar geometry to one Cu(11), one Cu(4), and one Cu(7) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Cu(13), one Cu(6), and one Sb(2) atom. In the fourteenth O site, O(14) is bonded to one Cu(2), one Cu(8), one Cu(9), and one Sb(1) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra,  a cornercorner with one O(17)Cu3Sb tetrahedra,  a cornercorner with one O(18)Cu3Sb tetrahedra, corners with two equivalent O(4)Cu3Si tetrahedra,  an edgeedge with one O(10)Cu3Sb tetrahedra, and  an edgeedge with one O(9)Cu3Si tetrahedra. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Cu(11), one Cu(2), one Cu(7), and one Si(2) atom. In the sixteenth O site, O(16) is bonded in a trigonal planar geometry to one Cu(5), one Cu(7), and one Si(2) atom. In the seventeenth O site, O(17) is bonded to one Cu(12), one Cu(5), one Cu(8), and one Sb(2) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra,  a cornercorner with one O(14)Cu3Sb tetrahedra,  a cornercorner with one O(18)Cu3Sb tetrahedra, corners with two equivalent O(9)Cu3Si tetrahedra,  an edgeedge with one O(18)Cu3Sb tetrahedra, and  an edgeedge with one O(4)Cu3Si tetrahedra. In the eighteenth O site, O(18) is bonded to one Cu(10), one Cu(12), one Cu(8), and one Sb(2) atom to form distorted OCu3Sb tetrahedra that share  a cornercorner with one O(10)Cu3Sb tetrahedra,  a cornercorner with one O(14)Cu3Sb tetrahedra,  a cornercorner with one O(17)Cu3Sb tetrahedra, corners with two equivalent O(4)Cu3Si tetrahedra,  an edgeedge with one O(17)Cu3Sb tetrahedra, and  an edgeedge with one O(9)Cu3Si tetrahedra. In the nineteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one Cu(13), one Cu(6), and one Sb(1) atom. In the twentieth O site, O(20) is bonded in a distorted rectangular see-saw-like geometry to one Cu(4), one Cu(6), one Cu(9), and one Sb(1) atom. In the twenty-first O site, O(21) is bonded in a distorted rectangular see-saw-like geometry to one Cu(1), one Cu(12), one Cu(13), and one Sb(2) atom. In the twenty-second O site, O(22) is bonded in a 4-coordinate geometry to one Cu(10), one Cu(3), one Cu(5), and one Si(1) atom. In the twenty-third O site, O(23) is bonded in a distorted rectangular see-saw-like geometry to one Cu(12), one Cu(13), one Cu(3), and one Sb(2) atom. In the twenty-fourth O site, O(24) is bonded in a bent 120 degrees geometry to one Cu(3) and one O(5) atom. In the twenty-fifth O site, O(25) is bonded in a 4-coordinate geometry to one Cu(1), one Cu(10), one Cu(5), and one Si(2) atom. In the twenty-sixth O site, O(26) is bonded in a distorted rectangular see-saw-like geometry to one Cu(11), one Cu(6), one Cu(9), and one Sb(1) atom. In the twenty-seventh O site, O(27) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Cu(10), and one Cu(3) atom. In the twenty-eighth O site, O(28) is bonded in a bent 120 degrees geometry to one Cu(11) 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   5.410
_cell_length_b   8.062
_cell_length_c   11.962
_cell_angle_alpha   88.153
_cell_angle_beta   77.120
_cell_angle_gamma   81.977
_symmetry_Int_Tables_number   1
_cell_volume   503.659
_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  0.953  0.621  0.679  1.0
  Cu  Cu1  1  0.667  0.361  0.148  1.0
  Cu  Cu2  1  0.372  0.375  0.680  1.0
  Cu  Cu3  1  0.047  0.377  0.322  1.0
  Cu  Cu4  1  0.336  0.637  0.852  1.0
  Cu  Cu5  1  0.282  1.000  0.437  1.0
  Cu  Cu6  1  0.187  0.638  0.149  1.0
  Cu  Cu7  1  0.000  1.000  1.000  1.0
  Cu  Cu8  1  0.421  0.999  0.158  1.0
  Cu  Cu9  1  0.815  0.360  0.852  1.0
  Cu  Cu10  1  0.628  0.623  0.321  1.0
  Cu  Cu11  1  0.580  0.000  0.842  1.0
  Cu  Cu12  1  0.720  0.999  0.564  1.0
  Si  Si13  1  0.221  0.320  0.001  1.0
  Si  Si14  1  0.779  0.680  0.999  1.0
  Sb  Sb15  1  0.849  1.000  0.302  1.0
  Sb  Sb16  1  0.153  0.998  0.699  1.0
  O  O17  1  0.712  0.393  0.297  1.0
  O  O18  1  0.268  0.422  0.417  1.0
  O  O19  1  0.911  0.341  0.000  1.0
  O  O20  1  0.296  0.112  0.003  1.0
  O  O21  1  0.732  0.576  0.583  1.0
  O  O22  1  0.287  0.605  0.704  1.0
  O  O23  1  0.020  0.119  0.568  1.0
  O  O24  1  0.981  0.879  0.432  1.0
  O  O25  1  0.704  0.887  0.998  1.0
  O  O26  1  0.122  0.878  0.169  1.0
  O  O27  1  0.273  0.394  0.120  1.0
  O  O28  1  0.987  0.607  0.296  1.0
  O  O29  1  0.415  0.879  0.568  1.0
  O  O30  1  0.710  0.121  0.169  1.0
  O  O31  1  0.606  0.607  0.118  1.0
  O  O32  1  0.088  0.657  1.000  1.0
  O  O33  1  0.294  0.878  0.832  1.0
  O  O34  1  0.879  0.119  0.831  1.0
  O  O35  1  0.587  0.119  0.433  1.0
  O  O36  1  0.135  0.140  0.307  1.0
  O  O37  1  0.867  0.858  0.693  1.0
  O  O38  1  0.394  0.391  0.882  1.0
  O  O39  1  0.446  0.137  0.695  1.0
  O  O40  1  0.687  0.421  0.583  1.0
  O  O41  1  0.726  0.606  0.880  1.0
  O  O42  1  0.556  0.861  0.306  1.0
  O  O43  1  0.014  0.391  0.703  1.0
  O  O44  1  0.313  0.579  0.416  1.0
[/CIF]
.