The crystal structure described by Na2SiCSbO7 crystallizes in the monoclinic P2_1/m space group. Na(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted NaO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with three equivalent Si(1)O4 tetrahedra,  an edgeedge with one Na(1)O6 octahedra,  a faceface with one Na(1)O6 octahedra, and  a faceface with one Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 61-83°. Si(1) is bonded to one O(5), one O(6), and two equivalent O(4) atoms to form SiO4 tetrahedra that share corners with four equivalent Sb(1)O6 octahedra and corners with six equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-74°. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. Sb(1) is bonded to one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted SbO6 octahedra that share corners with four equivalent Na(1)O6 octahedra, corners with four equivalent Si(1)O4 tetrahedra, and faces with two equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 61-83°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Na(1) and one C(1) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to two equivalent Na(1), one C(1), and one Sb(1) atom. In the third O site, O(3) is bonded in a distorted trigonal pyramidal geometry to two equivalent Na(1), one C(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Si(1), and one Sb(1) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to two equivalent Na(1), one Si(1), and one Sb(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Na(1), one Si(1), and one Sb(1) atom. is represented by the CIF file [CIF]
data_Na2SiSbCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.763
_cell_length_b   5.329
_cell_length_c   9.305
_cell_angle_alpha   88.396
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   335.235
_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  0.492  0.236  0.772  1.0
  Na  Na1  1  0.008  0.236  0.772  1.0
  Na  Na2  1  0.508  0.764  0.228  1.0
  Na  Na3  1  0.992  0.764  0.228  1.0
  Si  Si4  1  0.250  0.711  0.578  1.0
  Si  Si5  1  0.750  0.289  0.422  1.0
  Sb  Sb6  1  0.750  0.782  0.642  1.0
  Sb  Sb7  1  0.250  0.218  0.358  1.0
  C  C8  1  0.750  0.727  0.931  1.0
  C  C9  1  0.250  0.273  0.069  1.0
  O  O10  1  0.250  0.286  0.935  1.0
  O  O11  1  0.750  0.944  0.856  1.0
  O  O12  1  0.750  0.527  0.849  1.0
  O  O13  1  0.057  0.808  0.669  1.0
  O  O14  1  0.443  0.808  0.669  1.0
  O  O15  1  0.750  0.163  0.587  1.0
  O  O16  1  0.250  0.401  0.569  1.0
  O  O17  1  0.750  0.599  0.431  1.0
  O  O18  1  0.250  0.837  0.413  1.0
  O  O19  1  0.557  0.192  0.331  1.0
  O  O20  1  0.943  0.192  0.331  1.0
  O  O21  1  0.250  0.473  0.151  1.0
  O  O22  1  0.250  0.056  0.144  1.0
  O  O23  1  0.750  0.714  0.065  1.0
[/CIF]
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The crystal structure described by Na2SiCSbO7 crystallizes in the monoclinic P2_1/m space group. Na(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form distorted NaO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with three equivalent Si(1)O4 tetrahedra,  an edgeedge with one Na(1)O6 octahedra,  a faceface with one Na(1)O6 octahedra, and  a faceface with one Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 61-83°. Si(1) is bonded to one O(5), one O(6), and two equivalent O(4) atoms to form SiO4 tetrahedra that share corners with four equivalent Sb(1)O6 octahedra and corners with six equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-74°. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. Sb(1) is bonded to one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted SbO6 octahedra that share corners with four equivalent Na(1)O6 octahedra, corners with four equivalent Si(1)O4 tetrahedra, and faces with two equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 61-83°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Na(1) and one C(1) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to two equivalent Na(1), one C(1), and one Sb(1) atom. In the third O site, O(3) is bonded in a distorted trigonal pyramidal geometry to two equivalent Na(1), one C(1), and one Sb(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Si(1), and one Sb(1) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to two equivalent Na(1), one Si(1), and one Sb(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Na(1), one Si(1), and one Sb(1) atom. is represented by the CIF file [CIF]
data_Na2SiSbCO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.763
_cell_length_b   5.329
_cell_length_c   9.305
_cell_angle_alpha   88.396
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   335.235
_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  0.492  0.236  0.772  1.0
  Na  Na1  1  0.008  0.236  0.772  1.0
  Na  Na2  1  0.508  0.764  0.228  1.0
  Na  Na3  1  0.992  0.764  0.228  1.0
  Si  Si4  1  0.250  0.711  0.578  1.0
  Si  Si5  1  0.750  0.289  0.422  1.0
  Sb  Sb6  1  0.750  0.782  0.642  1.0
  Sb  Sb7  1  0.250  0.218  0.358  1.0
  C  C8  1  0.750  0.727  0.931  1.0
  C  C9  1  0.250  0.273  0.069  1.0
  O  O10  1  0.250  0.286  0.935  1.0
  O  O11  1  0.750  0.944  0.856  1.0
  O  O12  1  0.750  0.527  0.849  1.0
  O  O13  1  0.057  0.808  0.669  1.0
  O  O14  1  0.443  0.808  0.669  1.0
  O  O15  1  0.750  0.163  0.587  1.0
  O  O16  1  0.250  0.401  0.569  1.0
  O  O17  1  0.750  0.599  0.431  1.0
  O  O18  1  0.250  0.837  0.413  1.0
  O  O19  1  0.557  0.192  0.331  1.0
  O  O20  1  0.943  0.192  0.331  1.0
  O  O21  1  0.250  0.473  0.151  1.0
  O  O22  1  0.250  0.056  0.144  1.0
  O  O23  1  0.750  0.714  0.065  1.0
[/CIF]
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