The structure described by Na3LaSnSi2SO12 crystallizes in the monoclinic Cc space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 3-coordinate geometry to one O(1), one O(11), and one O(9) atom. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(2), one O(4), one O(6), one O(7), and one O(8) atom. In the third Na site, Na(3) is bonded in a 5-coordinate geometry to one O(10), one O(11), one O(12), one O(8), and one O(9) atom. La(1) is bonded to one O(1), one O(2), one O(3), one O(7), one O(8), and one O(9) atom to form distorted LaO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and corners with two equivalent S(1)O4 tetrahedra. Sn(1) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(6) atom. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(10), one O(6), and one O(9) atom to form SiO4 tetrahedra that share corners with two equivalent La(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-39°. In the second Si site, Si(2) is bonded to one O(11), one O(2), one O(5), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent La(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-39°. S(1) is bonded to one O(12), one O(3), one O(4), and one O(7) atom to form SO4 tetrahedra that share corners with two equivalent La(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 27-33°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one La(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(2), one La(1), and one Si(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one La(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Na(2), one Sn(1), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one Si(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(2), one Sn(1), and one Si(1) atom. In the seventh O site, O(7) is bonded in a 1-coordinate geometry to one Na(2), one La(1), and one S(1) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(3), one La(1), and one Si(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Na(1), one Na(3), one La(1), and one Si(1) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Sn(1), and one Si(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal pyramidal geometry to one Na(1), one Na(3), one Sn(1), and one Si(2) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one Na(2), one Na(3), one Sn(1), and one S(1) atom. is represented by the CIF card [CIF]
data_Na3LaSi2SnSO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.368
_cell_length_b   9.368
_cell_length_c   9.518
_cell_angle_alpha   91.441
_cell_angle_beta   118.969
_cell_angle_gamma   118.839
_symmetry_Int_Tables_number   1
_cell_volume   602.562
_cell_formula_units_Z   2
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
  La  La0  1  0.718  0.667  0.362  1.0
  La  La1  1  0.695  0.144  0.862  1.0
  Na  Na2  1  0.474  0.754  0.599  1.0
  Na  Na3  1  0.131  0.393  0.893  1.0
  Na  Na4  1  0.845  0.625  0.099  1.0
  Na  Na5  1  0.499  0.262  0.393  1.0
  Na  Na6  1  0.027  0.528  0.525  1.0
  Na  Na7  1  0.997  0.997  0.025  1.0
  O  O8  1  0.631  0.684  0.094  1.0
  O  O9  1  0.413  0.479  0.307  1.0
  O  O10  1  0.822  0.927  0.521  1.0
  O  O11  1  0.828  0.394  0.807  1.0
  O  O12  1  0.410  0.963  0.594  1.0
  O  O13  1  0.595  0.200  0.021  1.0
  O  O14  1  0.352  0.273  0.898  1.0
  O  O15  1  0.601  0.518  0.731  1.0
  O  O16  1  0.238  0.139  0.493  1.0
  O  O17  1  0.213  0.630  0.231  1.0
  O  O18  1  0.625  0.046  0.398  1.0
  O  O19  1  0.353  0.755  0.993  1.0
  O  O20  1  0.606  0.378  0.208  1.0
  O  O21  1  0.815  0.564  0.592  1.0
  O  O22  1  0.019  0.773  0.390  1.0
  O  O23  1  0.028  0.277  0.092  1.0
  O  O24  1  0.830  0.102  0.708  1.0
  O  O25  1  0.617  0.872  0.890  1.0
  O  O26  1  0.309  0.540  0.768  1.0
  O  O27  1  0.203  0.449  0.433  1.0
  O  O28  1  0.985  0.235  0.562  1.0
  O  O29  1  0.984  0.730  0.933  1.0
  O  O30  1  0.229  0.959  0.268  1.0
  O  O31  1  0.327  0.077  0.062  1.0
  S  S32  1  0.812  0.076  0.544  1.0
  S  S33  1  0.468  0.232  0.044  1.0
  Si  Si34  1  0.490  0.722  0.943  1.0
  Si  Si35  1  0.209  0.451  0.259  1.0
  Si  Si36  1  0.808  0.550  0.759  1.0
  Si  Si37  1  0.221  0.953  0.443  1.0
  Sn  Sn38  1  0.306  0.361  0.628  1.0
  Sn  Sn39  1  0.267  0.822  0.128  1.0
[/CIF]
.
The structure described by Na3LaSnSi2SO12 crystallizes in the monoclinic Cc space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 3-coordinate geometry to one O(1), one O(11), and one O(9) atom. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(2), one O(4), one O(6), one O(7), and one O(8) atom. In the third Na site, Na(3) is bonded in a 5-coordinate geometry to one O(10), one O(11), one O(12), one O(8), and one O(9) atom. La(1) is bonded to one O(1), one O(2), one O(3), one O(7), one O(8), and one O(9) atom to form distorted LaO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and corners with two equivalent S(1)O4 tetrahedra. Sn(1) is bonded in a 6-coordinate geometry to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(6) atom. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(10), one O(6), and one O(9) atom to form SiO4 tetrahedra that share corners with two equivalent La(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 38-39°. In the second Si site, Si(2) is bonded to one O(11), one O(2), one O(5), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent La(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-39°. S(1) is bonded to one O(12), one O(3), one O(4), and one O(7) atom to form SO4 tetrahedra that share corners with two equivalent La(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 27-33°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one La(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(2), one La(1), and one Si(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one La(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Na(2), one Sn(1), and one S(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one Si(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(2), one Sn(1), and one Si(1) atom. In the seventh O site, O(7) is bonded in a 1-coordinate geometry to one Na(2), one La(1), and one S(1) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(3), one La(1), and one Si(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Na(1), one Na(3), one La(1), and one Si(1) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Sn(1), and one Si(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal pyramidal geometry to one Na(1), one Na(3), one Sn(1), and one Si(2) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one Na(2), one Na(3), one Sn(1), and one S(1) atom. is represented by the CIF card [CIF]
data_Na3LaSi2SnSO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.368
_cell_length_b   9.368
_cell_length_c   9.518
_cell_angle_alpha   91.441
_cell_angle_beta   118.969
_cell_angle_gamma   118.839
_symmetry_Int_Tables_number   1
_cell_volume   602.562
_cell_formula_units_Z   2
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
  La  La0  1  0.718  0.667  0.362  1.0
  La  La1  1  0.695  0.144  0.862  1.0
  Na  Na2  1  0.474  0.754  0.599  1.0
  Na  Na3  1  0.131  0.393  0.893  1.0
  Na  Na4  1  0.845  0.625  0.099  1.0
  Na  Na5  1  0.499  0.262  0.393  1.0
  Na  Na6  1  0.027  0.528  0.525  1.0
  Na  Na7  1  0.997  0.997  0.025  1.0
  O  O8  1  0.631  0.684  0.094  1.0
  O  O9  1  0.413  0.479  0.307  1.0
  O  O10  1  0.822  0.927  0.521  1.0
  O  O11  1  0.828  0.394  0.807  1.0
  O  O12  1  0.410  0.963  0.594  1.0
  O  O13  1  0.595  0.200  0.021  1.0
  O  O14  1  0.352  0.273  0.898  1.0
  O  O15  1  0.601  0.518  0.731  1.0
  O  O16  1  0.238  0.139  0.493  1.0
  O  O17  1  0.213  0.630  0.231  1.0
  O  O18  1  0.625  0.046  0.398  1.0
  O  O19  1  0.353  0.755  0.993  1.0
  O  O20  1  0.606  0.378  0.208  1.0
  O  O21  1  0.815  0.564  0.592  1.0
  O  O22  1  0.019  0.773  0.390  1.0
  O  O23  1  0.028  0.277  0.092  1.0
  O  O24  1  0.830  0.102  0.708  1.0
  O  O25  1  0.617  0.872  0.890  1.0
  O  O26  1  0.309  0.540  0.768  1.0
  O  O27  1  0.203  0.449  0.433  1.0
  O  O28  1  0.985  0.235  0.562  1.0
  O  O29  1  0.984  0.730  0.933  1.0
  O  O30  1  0.229  0.959  0.268  1.0
  O  O31  1  0.327  0.077  0.062  1.0
  S  S32  1  0.812  0.076  0.544  1.0
  S  S33  1  0.468  0.232  0.044  1.0
  Si  Si34  1  0.490  0.722  0.943  1.0
  Si  Si35  1  0.209  0.451  0.259  1.0
  Si  Si36  1  0.808  0.550  0.759  1.0
  Si  Si37  1  0.221  0.953  0.443  1.0
  Sn  Sn38  1  0.306  0.361  0.628  1.0
  Sn  Sn39  1  0.267  0.822  0.128  1.0
[/CIF]
.