The structure described by Sn(PO3)4 crystallizes in the monoclinic C2/c space group. Sn(1) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms to form SnO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with four equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one Sn(1)O6 octahedra and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 37°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(4), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra and corners with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-43°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one P(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(2) atom. is represented by the CIF file [CIF]
data_Sn(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.291
_cell_length_b   7.291
_cell_length_c   10.269
_cell_angle_alpha   65.905
_cell_angle_beta   65.905
_cell_angle_gamma   70.203
_symmetry_Int_Tables_number   1
_cell_volume   445.079
_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
  Sn  Sn0  1  0.057  0.943  0.750  1.0
  Sn  Sn1  1  0.943  0.057  0.250  1.0
  P  P2  1  0.287  0.308  0.699  1.0
  P  P3  1  0.252  0.726  0.479  1.0
  P  P4  1  0.274  0.748  0.021  1.0
  P  P5  1  0.308  0.287  0.199  1.0
  P  P6  1  0.692  0.713  0.801  1.0
  P  P7  1  0.726  0.252  0.979  1.0
  P  P8  1  0.748  0.274  0.521  1.0
  P  P9  1  0.713  0.692  0.301  1.0
  O  O10  1  0.809  0.649  0.158  1.0
  O  O11  1  0.804  0.262  0.092  1.0
  O  O12  1  0.466  0.711  0.352  1.0
  O  O13  1  0.262  0.804  0.592  1.0
  O  O14  1  0.223  0.494  0.557  1.0
  O  O15  1  0.261  0.121  0.683  1.0
  O  O16  1  0.494  0.223  0.057  1.0
  O  O17  1  0.351  0.191  0.342  1.0
  O  O18  1  0.086  0.840  0.406  1.0
  O  O19  1  0.289  0.534  0.148  1.0
  O  O20  1  0.879  0.739  0.817  1.0
  O  O21  1  0.160  0.914  0.094  1.0
  O  O22  1  0.840  0.086  0.906  1.0
  O  O23  1  0.121  0.261  0.183  1.0
  O  O24  1  0.711  0.466  0.852  1.0
  O  O25  1  0.914  0.160  0.594  1.0
  O  O26  1  0.649  0.809  0.658  1.0
  O  O27  1  0.506  0.777  0.943  1.0
  O  O28  1  0.739  0.879  0.317  1.0
  O  O29  1  0.777  0.506  0.443  1.0
  O  O30  1  0.738  0.196  0.408  1.0
  O  O31  1  0.534  0.289  0.648  1.0
  O  O32  1  0.196  0.738  0.908  1.0
  O  O33  1  0.191  0.351  0.842  1.0
[/CIF]
.
The structure described by Sn(PO3)4 crystallizes in the monoclinic C2/c space group. Sn(1) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms to form SnO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with four equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form PO4 tetrahedra that share  a cornercorner with one Sn(1)O6 octahedra and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 37°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(4), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra and corners with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 21-43°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one P(1) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one P(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Sn(1) and one P(2) atom. is represented by the CIF file [CIF]
data_Sn(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.291
_cell_length_b   7.291
_cell_length_c   10.269
_cell_angle_alpha   65.905
_cell_angle_beta   65.905
_cell_angle_gamma   70.203
_symmetry_Int_Tables_number   1
_cell_volume   445.079
_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
  Sn  Sn0  1  0.057  0.943  0.750  1.0
  Sn  Sn1  1  0.943  0.057  0.250  1.0
  P  P2  1  0.287  0.308  0.699  1.0
  P  P3  1  0.252  0.726  0.479  1.0
  P  P4  1  0.274  0.748  0.021  1.0
  P  P5  1  0.308  0.287  0.199  1.0
  P  P6  1  0.692  0.713  0.801  1.0
  P  P7  1  0.726  0.252  0.979  1.0
  P  P8  1  0.748  0.274  0.521  1.0
  P  P9  1  0.713  0.692  0.301  1.0
  O  O10  1  0.809  0.649  0.158  1.0
  O  O11  1  0.804  0.262  0.092  1.0
  O  O12  1  0.466  0.711  0.352  1.0
  O  O13  1  0.262  0.804  0.592  1.0
  O  O14  1  0.223  0.494  0.557  1.0
  O  O15  1  0.261  0.121  0.683  1.0
  O  O16  1  0.494  0.223  0.057  1.0
  O  O17  1  0.351  0.191  0.342  1.0
  O  O18  1  0.086  0.840  0.406  1.0
  O  O19  1  0.289  0.534  0.148  1.0
  O  O20  1  0.879  0.739  0.817  1.0
  O  O21  1  0.160  0.914  0.094  1.0
  O  O22  1  0.840  0.086  0.906  1.0
  O  O23  1  0.121  0.261  0.183  1.0
  O  O24  1  0.711  0.466  0.852  1.0
  O  O25  1  0.914  0.160  0.594  1.0
  O  O26  1  0.649  0.809  0.658  1.0
  O  O27  1  0.506  0.777  0.943  1.0
  O  O28  1  0.739  0.879  0.317  1.0
  O  O29  1  0.777  0.506  0.443  1.0
  O  O30  1  0.738  0.196  0.408  1.0
  O  O31  1  0.534  0.289  0.648  1.0
  O  O32  1  0.196  0.738  0.908  1.0
  O  O33  1  0.191  0.351  0.842  1.0
[/CIF]
.