The crystal structure described by Na3Sn2Si2PO12 crystallizes in the monoclinic Cc space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted hexagonal planar geometry to one O(10), one O(11), one O(12), one O(7), one O(8), and one O(9) atom. In the second Na site, Na(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(11), one O(3), one O(7), one O(9), and two equivalent O(5) atoms. In the third Na site, Na(3) is bonded in a 8-coordinate geometry to one O(10), one O(12), one O(4), one O(6), one O(7), one O(8), and two equivalent O(2) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(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 SnO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. In the second Sn site, Sn(2) is bonded to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(6) atom to form SnO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. There are two inequivalent Si sites. In the first Si site, Si(1) 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 Sn(1)O6 octahedra and corners with two equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-39°. In the second Si site, Si(2) is bonded to one O(12), one O(3), one O(4), and one O(7) atom to form SiO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra and corners with two equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-39°. P(1) is bonded to one O(1), one O(10), one O(6), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra and corners with two equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-35°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(2), one Sn(1), and one P(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Na(3), one Sn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Na(2), one Sn(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(3), one Sn(2), and one Si(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Na(2), one Sn(2), and one Si(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Na(3), one Sn(2), and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal bipyramidal geometry to one Na(1), one Na(2), one Na(3), one Sn(1), and one Si(2) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(3), one Sn(1), and one Si(1) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Sn(1), and one P(1) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(3), one Sn(2), and one P(1) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Sn(2), and one Si(1) atom. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to one Na(1), one Na(3), one Sn(2), and one Si(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3Si2Sn2PO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.034
_cell_length_b   9.047
_cell_length_c   9.143
_cell_angle_alpha   60.368
_cell_angle_beta   90.000
_cell_angle_gamma   119.954
_symmetry_Int_Tables_number   1
_cell_volume   531.664
_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  0.497  0.006  0.499  1.0
  Na  Na1  1  0.008  0.006  0.999  1.0
  Na  Na2  1  0.891  0.141  0.246  1.0
  Na  Na3  1  0.250  0.871  0.245  1.0
  Na  Na4  1  0.750  0.141  0.746  1.0
  Na  Na5  1  0.121  0.871  0.745  1.0
  O  O6  1  0.527  0.802  0.075  1.0
  O  O7  1  0.137  0.660  0.074  1.0
  O  O8  1  0.266  0.403  0.084  1.0
  O  O9  1  0.023  0.660  0.574  1.0
  O  O10  1  0.775  0.802  0.575  1.0
  O  O11  1  0.637  0.403  0.584  1.0
  O  O12  1  0.473  0.194  0.937  1.0
  O  O13  1  0.864  0.343  0.927  1.0
  O  O14  1  0.733  0.606  0.909  1.0
  O  O15  1  0.979  0.343  0.427  1.0
  O  O16  1  0.221  0.194  0.437  1.0
  O  O17  1  0.373  0.606  0.409  1.0
  O  O18  1  0.441  0.008  0.767  1.0
  O  O19  1  0.226  0.666  0.763  1.0
  O  O20  1  0.587  0.807  0.767  1.0
  O  O21  1  0.939  0.666  0.263  1.0
  O  O22  1  0.068  0.008  0.267  1.0
  O  O23  1  0.720  0.807  0.267  1.0
  O  O24  1  0.565  0.981  0.235  1.0
  O  O25  1  0.777  0.333  0.233  1.0
  O  O26  1  0.418  0.183  0.239  1.0
  O  O27  1  0.056  0.333  0.733  1.0
  O  O28  1  0.916  0.981  0.735  1.0
  O  O29  1  0.265  0.183  0.739  1.0
  P  P30  1  0.545  0.794  0.246  1.0
  P  P31  1  0.749  0.794  0.746  1.0
  Si  Si32  1  0.955  0.500  0.250  1.0
  Si  Si33  1  0.250  0.205  0.255  1.0
  Si  Si34  1  0.044  0.500  0.750  1.0
  Si  Si35  1  0.455  0.205  0.755  1.0
  Sn  Sn36  1  0.348  0.698  0.944  1.0
  Sn  Sn37  1  0.851  0.698  0.444  1.0
  Sn  Sn38  1  0.646  0.300  0.056  1.0
  Sn  Sn39  1  0.154  0.300  0.556  1.0
[/CIF]
.
The crystal structure described by Na3Sn2Si2PO12 crystallizes in the monoclinic Cc space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted hexagonal planar geometry to one O(10), one O(11), one O(12), one O(7), one O(8), and one O(9) atom. In the second Na site, Na(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(11), one O(3), one O(7), one O(9), and two equivalent O(5) atoms. In the third Na site, Na(3) is bonded in a 8-coordinate geometry to one O(10), one O(12), one O(4), one O(6), one O(7), one O(8), and two equivalent O(2) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(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 SnO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. In the second Sn site, Sn(2) is bonded to one O(10), one O(11), one O(12), one O(4), one O(5), and one O(6) atom to form SnO6 octahedra that share corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. There are two inequivalent Si sites. In the first Si site, Si(1) 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 Sn(1)O6 octahedra and corners with two equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-39°. In the second Si site, Si(2) is bonded to one O(12), one O(3), one O(4), and one O(7) atom to form SiO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra and corners with two equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-39°. P(1) is bonded to one O(1), one O(10), one O(6), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra and corners with two equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-35°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(2), one Sn(1), and one P(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Na(3), one Sn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Na(2), one Sn(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(3), one Sn(2), and one Si(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Na(2), one Sn(2), and one Si(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Na(3), one Sn(2), and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal bipyramidal geometry to one Na(1), one Na(2), one Na(3), one Sn(1), and one Si(2) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(3), one Sn(1), and one Si(1) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Sn(1), and one P(1) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(3), one Sn(2), and one P(1) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Sn(2), and one Si(1) atom. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to one Na(1), one Na(3), one Sn(2), and one Si(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3Si2Sn2PO12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.034
_cell_length_b   9.047
_cell_length_c   9.143
_cell_angle_alpha   60.368
_cell_angle_beta   90.000
_cell_angle_gamma   119.954
_symmetry_Int_Tables_number   1
_cell_volume   531.664
_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  0.497  0.006  0.499  1.0
  Na  Na1  1  0.008  0.006  0.999  1.0
  Na  Na2  1  0.891  0.141  0.246  1.0
  Na  Na3  1  0.250  0.871  0.245  1.0
  Na  Na4  1  0.750  0.141  0.746  1.0
  Na  Na5  1  0.121  0.871  0.745  1.0
  O  O6  1  0.527  0.802  0.075  1.0
  O  O7  1  0.137  0.660  0.074  1.0
  O  O8  1  0.266  0.403  0.084  1.0
  O  O9  1  0.023  0.660  0.574  1.0
  O  O10  1  0.775  0.802  0.575  1.0
  O  O11  1  0.637  0.403  0.584  1.0
  O  O12  1  0.473  0.194  0.937  1.0
  O  O13  1  0.864  0.343  0.927  1.0
  O  O14  1  0.733  0.606  0.909  1.0
  O  O15  1  0.979  0.343  0.427  1.0
  O  O16  1  0.221  0.194  0.437  1.0
  O  O17  1  0.373  0.606  0.409  1.0
  O  O18  1  0.441  0.008  0.767  1.0
  O  O19  1  0.226  0.666  0.763  1.0
  O  O20  1  0.587  0.807  0.767  1.0
  O  O21  1  0.939  0.666  0.263  1.0
  O  O22  1  0.068  0.008  0.267  1.0
  O  O23  1  0.720  0.807  0.267  1.0
  O  O24  1  0.565  0.981  0.235  1.0
  O  O25  1  0.777  0.333  0.233  1.0
  O  O26  1  0.418  0.183  0.239  1.0
  O  O27  1  0.056  0.333  0.733  1.0
  O  O28  1  0.916  0.981  0.735  1.0
  O  O29  1  0.265  0.183  0.739  1.0
  P  P30  1  0.545  0.794  0.246  1.0
  P  P31  1  0.749  0.794  0.746  1.0
  Si  Si32  1  0.955  0.500  0.250  1.0
  Si  Si33  1  0.250  0.205  0.255  1.0
  Si  Si34  1  0.044  0.500  0.750  1.0
  Si  Si35  1  0.455  0.205  0.755  1.0
  Sn  Sn36  1  0.348  0.698  0.944  1.0
  Sn  Sn37  1  0.851  0.698  0.444  1.0
  Sn  Sn38  1  0.646  0.300  0.056  1.0
  Sn  Sn39  1  0.154  0.300  0.556  1.0
[/CIF]
.