The structure described by Na4C4Sb2SO16 crystallizes in the orthorhombic Fddd space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form distorted NaO6 octahedra that share corners with four equivalent Na(2)O6 octahedra, edges with two equivalent Sb(1)O6 octahedra, and  an edgeedge with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-82°. In the second Na site, Na(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted NaO6 octahedra that share corners with four equivalent Na(1)O6 octahedra, edges with two equivalent Sb(1)O6 octahedra, and  an edgeedge with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-82°. C(1) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(4) atom. Sb(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form SbO6 octahedra that share edges with two equivalent Na(1)O6 octahedra and edges with two equivalent Na(2)O6 octahedra. S(1) is bonded to four equivalent O(2) atoms to form SO4 tetrahedra that share edges with two equivalent Na(1)O6 octahedra and edges with two equivalent Na(2)O6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one C(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Na(1), one Na(2), and one S(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(2), one C(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one C(1), and one Sb(1) atom. is represented by the CIF card [CIF]
data_Na4Sb2C4SO16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.519
_cell_length_b   10.446
_cell_length_c   10.142
_cell_angle_alpha   61.433
_cell_angle_beta   60.708
_cell_angle_gamma   57.859
_symmetry_Int_Tables_number   1
_cell_volume   786.336
_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
  Na  Na0  1  0.952  0.548  0.952  1.0
  Na  Na1  1  0.953  0.547  0.547  1.0
  Na  Na2  1  0.703  0.297  0.297  1.0
  Na  Na3  1  0.702  0.298  0.702  1.0
  Na  Na4  1  0.548  0.952  0.548  1.0
  Na  Na5  1  0.547  0.953  0.953  1.0
  Na  Na6  1  0.297  0.703  0.703  1.0
  Na  Na7  1  0.298  0.702  0.298  1.0
  Sb  Sb8  1  0.125  0.625  0.125  1.0
  Sb  Sb9  1  0.625  0.125  0.125  1.0
  Sb  Sb10  1  0.125  0.125  0.125  1.0
  Sb  Sb11  1  0.125  0.125  0.625  1.0
  C  C12  1  0.896  0.283  0.913  1.0
  C  C13  1  0.967  0.354  0.342  1.0
  C  C14  1  0.913  0.908  0.896  1.0
  C  C15  1  0.908  0.913  0.283  1.0
  C  C16  1  0.342  0.337  0.967  1.0
  C  C17  1  0.337  0.342  0.354  1.0
  C  C18  1  0.283  0.896  0.908  1.0
  C  C19  1  0.354  0.967  0.337  1.0
  S  S20  1  0.500  0.500  0.500  1.0
  S  S21  1  0.750  0.750  0.750  1.0
  O  O22  1  0.008  0.290  0.928  1.0
  O  O23  1  0.555  0.554  0.323  1.0
  O  O24  1  0.772  0.272  0.033  1.0
  O  O25  1  0.978  0.478  0.327  1.0
  O  O26  1  0.033  0.923  0.772  1.0
  O  O27  1  0.961  0.341  0.223  1.0
  O  O28  1  0.323  0.568  0.555  1.0
  O  O29  1  0.554  0.555  0.568  1.0
  O  O30  1  0.475  0.223  0.341  1.0
  O  O31  1  0.923  0.033  0.272  1.0
  O  O32  1  0.960  0.242  0.475  1.0
  O  O33  1  0.568  0.323  0.554  1.0
  O  O34  1  0.928  0.775  0.008  1.0
  O  O35  1  0.775  0.928  0.290  1.0
  O  O36  1  0.909  0.289  0.775  1.0
  O  O37  1  0.223  0.475  0.961  1.0
  O  O38  1  0.027  0.775  0.289  1.0
  O  O39  1  0.341  0.961  0.475  1.0
  O  O40  1  0.475  0.322  0.960  1.0
  O  O41  1  0.322  0.475  0.242  1.0
  O  O42  1  0.682  0.927  0.696  1.0
  O  O43  1  0.290  0.008  0.775  1.0
  O  O44  1  0.327  0.217  0.978  1.0
  O  O45  1  0.775  0.027  0.909  1.0
  O  O46  1  0.696  0.695  0.682  1.0
  O  O47  1  0.927  0.682  0.695  1.0
  O  O48  1  0.289  0.909  0.027  1.0
  O  O49  1  0.217  0.327  0.478  1.0
  O  O50  1  0.272  0.772  0.923  1.0
  O  O51  1  0.478  0.978  0.217  1.0
  O  O52  1  0.695  0.696  0.927  1.0
  O  O53  1  0.242  0.960  0.322  1.0
[/CIF]
.
The structure described by Na4C4Sb2SO16 crystallizes in the orthorhombic Fddd space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form distorted NaO6 octahedra that share corners with four equivalent Na(2)O6 octahedra, edges with two equivalent Sb(1)O6 octahedra, and  an edgeedge with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-82°. In the second Na site, Na(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted NaO6 octahedra that share corners with four equivalent Na(1)O6 octahedra, edges with two equivalent Sb(1)O6 octahedra, and  an edgeedge with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-82°. C(1) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(4) atom. Sb(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form SbO6 octahedra that share edges with two equivalent Na(1)O6 octahedra and edges with two equivalent Na(2)O6 octahedra. S(1) is bonded to four equivalent O(2) atoms to form SO4 tetrahedra that share edges with two equivalent Na(1)O6 octahedra and edges with two equivalent Na(2)O6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one C(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Na(1), one Na(2), and one S(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(2), one C(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one C(1), and one Sb(1) atom. is represented by the CIF card [CIF]
data_Na4Sb2C4SO16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.519
_cell_length_b   10.446
_cell_length_c   10.142
_cell_angle_alpha   61.433
_cell_angle_beta   60.708
_cell_angle_gamma   57.859
_symmetry_Int_Tables_number   1
_cell_volume   786.336
_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
  Na  Na0  1  0.952  0.548  0.952  1.0
  Na  Na1  1  0.953  0.547  0.547  1.0
  Na  Na2  1  0.703  0.297  0.297  1.0
  Na  Na3  1  0.702  0.298  0.702  1.0
  Na  Na4  1  0.548  0.952  0.548  1.0
  Na  Na5  1  0.547  0.953  0.953  1.0
  Na  Na6  1  0.297  0.703  0.703  1.0
  Na  Na7  1  0.298  0.702  0.298  1.0
  Sb  Sb8  1  0.125  0.625  0.125  1.0
  Sb  Sb9  1  0.625  0.125  0.125  1.0
  Sb  Sb10  1  0.125  0.125  0.125  1.0
  Sb  Sb11  1  0.125  0.125  0.625  1.0
  C  C12  1  0.896  0.283  0.913  1.0
  C  C13  1  0.967  0.354  0.342  1.0
  C  C14  1  0.913  0.908  0.896  1.0
  C  C15  1  0.908  0.913  0.283  1.0
  C  C16  1  0.342  0.337  0.967  1.0
  C  C17  1  0.337  0.342  0.354  1.0
  C  C18  1  0.283  0.896  0.908  1.0
  C  C19  1  0.354  0.967  0.337  1.0
  S  S20  1  0.500  0.500  0.500  1.0
  S  S21  1  0.750  0.750  0.750  1.0
  O  O22  1  0.008  0.290  0.928  1.0
  O  O23  1  0.555  0.554  0.323  1.0
  O  O24  1  0.772  0.272  0.033  1.0
  O  O25  1  0.978  0.478  0.327  1.0
  O  O26  1  0.033  0.923  0.772  1.0
  O  O27  1  0.961  0.341  0.223  1.0
  O  O28  1  0.323  0.568  0.555  1.0
  O  O29  1  0.554  0.555  0.568  1.0
  O  O30  1  0.475  0.223  0.341  1.0
  O  O31  1  0.923  0.033  0.272  1.0
  O  O32  1  0.960  0.242  0.475  1.0
  O  O33  1  0.568  0.323  0.554  1.0
  O  O34  1  0.928  0.775  0.008  1.0
  O  O35  1  0.775  0.928  0.290  1.0
  O  O36  1  0.909  0.289  0.775  1.0
  O  O37  1  0.223  0.475  0.961  1.0
  O  O38  1  0.027  0.775  0.289  1.0
  O  O39  1  0.341  0.961  0.475  1.0
  O  O40  1  0.475  0.322  0.960  1.0
  O  O41  1  0.322  0.475  0.242  1.0
  O  O42  1  0.682  0.927  0.696  1.0
  O  O43  1  0.290  0.008  0.775  1.0
  O  O44  1  0.327  0.217  0.978  1.0
  O  O45  1  0.775  0.027  0.909  1.0
  O  O46  1  0.696  0.695  0.682  1.0
  O  O47  1  0.927  0.682  0.695  1.0
  O  O48  1  0.289  0.909  0.027  1.0
  O  O49  1  0.217  0.327  0.478  1.0
  O  O50  1  0.272  0.772  0.923  1.0
  O  O51  1  0.478  0.978  0.217  1.0
  O  O52  1  0.695  0.696  0.927  1.0
  O  O53  1  0.242  0.960  0.322  1.0
[/CIF]
.