Sn13Si2(SbO14)2 crystallizes in the triclinic P-1 space group. There are seven inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(1), one O(12), one O(2), one O(7), and one O(8) atom to form SnO5 trigonal bipyramids that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  an edgeedge with one Sn(3)O5 square pyramid. The corner-sharing octahedral tilt angles are 37°. In the second Sn site, Sn(2) is bonded in a trigonal non-coplanar geometry to one O(1), one O(10), and one O(2) atom. In the third Sn site, Sn(3) is bonded to one O(1), one O(11), one O(13), one O(14), and one O(8) atom to form SnO5 square pyramids that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  an edgeedge with one Sn(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 35°. In the fourth Sn site, Sn(4) is bonded in a distorted pentagonal planar geometry to one O(13), one O(14), one O(9), and two equivalent O(5) atoms. In the fifth Sn site, Sn(5) is bonded in a 3-coordinate geometry to one O(3), one O(6), and one O(8) atom. In the sixth Sn site, Sn(6) is bonded to two equivalent O(10), two equivalent O(3), and two equivalent O(6) atoms to form distorted SnO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra and edges with two equivalent Sb(1)O6 octahedra. In the seventh Sn site, Sn(7) is bonded in a 5-coordinate geometry to one O(10), one O(12), one O(6), and two equivalent O(4) atoms. 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 Sn(6)O6 octahedra,  a cornercorner with one Sn(3)O5 square pyramid, and  a cornercorner with one Sn(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 68°. 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 Sn(3)O5 square pyramid,  a cornercorner with one Sn(1)O5 trigonal bipyramid, and  an edgeedge with one Sn(6)O6 octahedra. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Sn(1), one Sn(2), and one Sn(3) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sn(1) and one Sn(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Sn(5), one Sn(6), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Sn(7) and one Si(1) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to two equivalent Sn(4) and one Sb(1) atom. In the sixth O site, O(6) is bonded to one Sn(5), one Sn(6), one Sn(7), and one Sb(1) atom to form distorted corner-sharing OSn3Sb trigonal pyramids. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one Si(1) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Sn(1), one Sn(3), and one Sn(5) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one Sn(4) and one Sb(1) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sn(2), one Sn(6), one Sn(7), and one Sb(1) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Sn(3) and one Si(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Sn(1), one Sn(7), and one Sb(1) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Sn(3), one Sn(4), and one Sb(1) atom. In the fourteenth O site, O(14) is bonded in a water-like geometry to one Sn(3) and one Sn(4) atom.
Sn13Si2(SbO14)2 crystallizes in the triclinic P-1 space group. There are seven inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(1), one O(12), one O(2), one O(7), and one O(8) atom to form SnO5 trigonal bipyramids that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  an edgeedge with one Sn(3)O5 square pyramid. The corner-sharing octahedral tilt angles are 37°. The Sn(1)-O(1) bond length is 2.04 Å. The Sn(1)-O(12) bond length is 2.11 Å. The Sn(1)-O(2) bond length is 1.96 Å. The Sn(1)-O(7) bond length is 2.05 Å. The Sn(1)-O(8) bond length is 2.15 Å. In the second Sn site, Sn(2) is bonded in a trigonal non-coplanar geometry to one O(1), one O(10), and one O(2) atom. The Sn(2)-O(1) bond length is 2.28 Å. The Sn(2)-O(10) bond length is 2.24 Å. The Sn(2)-O(2) bond length is 2.08 Å. In the third Sn site, Sn(3) is bonded to one O(1), one O(11), one O(13), one O(14), and one O(8) atom to form SnO5 square pyramids that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  an edgeedge with one Sn(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 35°. The Sn(3)-O(1) bond length is 2.14 Å. The Sn(3)-O(11) bond length is 2.01 Å. The Sn(3)-O(13) bond length is 2.13 Å. The Sn(3)-O(14) bond length is 1.98 Å. The Sn(3)-O(8) bond length is 2.04 Å. In the fourth Sn site, Sn(4) is bonded in a distorted pentagonal planar geometry to one O(13), one O(14), one O(9), and two equivalent O(5) atoms. The Sn(4)-O(13) bond length is 2.29 Å. The Sn(4)-O(14) bond length is 2.01 Å. The Sn(4)-O(9) bond length is 2.05 Å. Both Sn(4)-O(5) bond lengths are 2.19 Å. In the fifth Sn site, Sn(5) is bonded in a 3-coordinate geometry to one O(3), one O(6), and one O(8) atom. The Sn(5)-O(3) bond length is 2.21 Å. The Sn(5)-O(6) bond length is 2.30 Å. The Sn(5)-O(8) bond length is 2.18 Å. In the sixth Sn site, Sn(6) is bonded to two equivalent O(10), two equivalent O(3), and two equivalent O(6) atoms to form distorted SnO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra and edges with two equivalent Sb(1)O6 octahedra. Both Sn(6)-O(10) bond lengths are 2.50 Å. Both Sn(6)-O(3) bond lengths are 2.46 Å. Both Sn(6)-O(6) bond lengths are 2.58 Å. In the seventh Sn site, Sn(7) is bonded in a 5-coordinate geometry to one O(10), one O(12), one O(6), and two equivalent O(4) atoms. The Sn(7)-O(10) bond length is 2.68 Å. The Sn(7)-O(12) bond length is 2.22 Å. The Sn(7)-O(6) bond length is 2.28 Å. There is one shorter (2.15 Å) and one longer (2.54 Å) Sn(7)-O(4) bond length. 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 Sn(6)O6 octahedra,  a cornercorner with one Sn(3)O5 square pyramid, and  a cornercorner with one Sn(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 68°. The Si(1)-O(11) bond length is 1.65 Å. The Si(1)-O(3) bond length is 1.63 Å. The Si(1)-O(4) bond length is 1.69 Å. The Si(1)-O(7) bond length is 1.64 Å. 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 Sn(3)O5 square pyramid,  a cornercorner with one Sn(1)O5 trigonal bipyramid, and  an edgeedge with one Sn(6)O6 octahedra. The Sb(1)-O(10) bond length is 2.02 Å. The Sb(1)-O(12) bond length is 2.11 Å. The Sb(1)-O(13) bond length is 2.02 Å. The Sb(1)-O(5) bond length is 2.07 Å. The Sb(1)-O(6) bond length is 2.05 Å. The Sb(1)-O(9) bond length is 1.96 Å. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Sn(1), one Sn(2), and one Sn(3) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sn(1) and one Sn(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Sn(5), one Sn(6), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Sn(7) and one Si(1) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to two equivalent Sn(4) and one Sb(1) atom. In the sixth O site, O(6) is bonded to one Sn(5), one Sn(6), one Sn(7), and one Sb(1) atom to form distorted corner-sharing OSn3Sb trigonal pyramids. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one Si(1) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Sn(1), one Sn(3), and one Sn(5) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one Sn(4) and one Sb(1) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Sn(2), one Sn(6), one Sn(7), and one Sb(1) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Sn(3) and one Si(1) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Sn(1), one Sn(7), and one Sb(1) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Sn(3), one Sn(4), and one Sb(1) atom. In the fourteenth O site, O(14) is bonded in a water-like geometry to one Sn(3) and one Sn(4) atom.