The compound described by Sn(PO3)3 crystallizes in the orthorhombic P2_12_12_1 space group. Sn(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form SnO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(4), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-47°. In the second P site, P(2) is bonded to one O(3), one O(5), one O(6), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-55°. In the third P site, P(3) is bonded to one O(1), one O(7), one O(8), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 14-41°. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one P(1) and one P(3) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sn(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one P(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to one Sn(1) and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one P(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one P(2) and one P(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sn(PO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.849
_cell_length_b   8.949
_cell_length_c   9.099
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   720.603
_cell_formula_units_Z   4
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  0.127  0.857  0.154  1.0
  Sn  Sn1  1  0.373  0.143  0.654  1.0
  Sn  Sn2  1  0.627  0.643  0.846  1.0
  Sn  Sn3  1  0.873  0.357  0.346  1.0
  P  P4  1  0.033  0.325  0.689  1.0
  P  P5  1  0.196  0.482  0.188  1.0
  P  P6  1  0.196  0.806  0.563  1.0
  P  P7  1  0.304  0.194  0.063  1.0
  P  P8  1  0.304  0.518  0.688  1.0
  P  P9  1  0.467  0.675  0.189  1.0
  P  P10  1  0.533  0.175  0.311  1.0
  P  P11  1  0.696  0.018  0.812  1.0
  P  P12  1  0.696  0.694  0.437  1.0
  P  P13  1  0.804  0.306  0.937  1.0
  P  P14  1  0.804  0.982  0.312  1.0
  P  P15  1  0.967  0.825  0.811  1.0
  O  O16  1  0.042  0.783  0.657  1.0
  O  O17  1  0.087  0.881  0.916  1.0
  O  O18  1  0.110  0.607  0.115  1.0
  O  O19  1  0.127  0.193  0.640  1.0
  O  O20  1  0.125  0.404  0.318  1.0
  O  O21  1  0.139  0.462  0.740  1.0
  O  O22  1  0.151  0.841  0.409  1.0
  O  O23  1  0.195  0.095  0.144  1.0
  O  O24  1  0.237  0.363  0.062  1.0
  O  O25  1  0.263  0.637  0.562  1.0
  O  O26  1  0.305  0.905  0.644  1.0
  O  O27  1  0.349  0.159  0.909  1.0
  O  O28  1  0.361  0.538  0.240  1.0
  O  O29  1  0.375  0.596  0.818  1.0
  O  O30  1  0.373  0.807  0.140  1.0
  O  O31  1  0.390  0.393  0.615  1.0
  O  O32  1  0.413  0.119  0.416  1.0
  O  O33  1  0.458  0.217  0.157  1.0
  O  O34  1  0.542  0.717  0.343  1.0
  O  O35  1  0.587  0.619  0.084  1.0
  O  O36  1  0.610  0.893  0.885  1.0
  O  O37  1  0.627  0.307  0.360  1.0
  O  O38  1  0.625  0.096  0.682  1.0
  O  O39  1  0.639  0.038  0.260  1.0
  O  O40  1  0.651  0.659  0.591  1.0
  O  O41  1  0.695  0.405  0.856  1.0
  O  O42  1  0.737  0.137  0.938  1.0
  O  O43  1  0.763  0.863  0.438  1.0
  O  O44  1  0.805  0.595  0.356  1.0
  O  O45  1  0.849  0.341  0.091  1.0
  O  O46  1  0.861  0.962  0.760  1.0
  O  O47  1  0.875  0.904  0.182  1.0
  O  O48  1  0.873  0.693  0.860  1.0
  O  O49  1  0.890  0.107  0.385  1.0
  O  O50  1  0.913  0.381  0.584  1.0
  O  O51  1  0.958  0.283  0.843  1.0
[/CIF]
.
The compound described by Sn(PO3)3 crystallizes in the orthorhombic P2_12_12_1 space group. Sn(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form SnO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(4), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-47°. In the second P site, P(2) is bonded to one O(3), one O(5), one O(6), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-55°. In the third P site, P(3) is bonded to one O(1), one O(7), one O(8), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 14-41°. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one P(1) and one P(3) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sn(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one P(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Sn(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the seventh O site, O(7) is bonded in a distorted linear geometry to one Sn(1) and one P(3) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Sn(1) and one P(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one P(2) and one P(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sn(PO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.849
_cell_length_b   8.949
_cell_length_c   9.099
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   720.603
_cell_formula_units_Z   4
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  0.127  0.857  0.154  1.0
  Sn  Sn1  1  0.373  0.143  0.654  1.0
  Sn  Sn2  1  0.627  0.643  0.846  1.0
  Sn  Sn3  1  0.873  0.357  0.346  1.0
  P  P4  1  0.033  0.325  0.689  1.0
  P  P5  1  0.196  0.482  0.188  1.0
  P  P6  1  0.196  0.806  0.563  1.0
  P  P7  1  0.304  0.194  0.063  1.0
  P  P8  1  0.304  0.518  0.688  1.0
  P  P9  1  0.467  0.675  0.189  1.0
  P  P10  1  0.533  0.175  0.311  1.0
  P  P11  1  0.696  0.018  0.812  1.0
  P  P12  1  0.696  0.694  0.437  1.0
  P  P13  1  0.804  0.306  0.937  1.0
  P  P14  1  0.804  0.982  0.312  1.0
  P  P15  1  0.967  0.825  0.811  1.0
  O  O16  1  0.042  0.783  0.657  1.0
  O  O17  1  0.087  0.881  0.916  1.0
  O  O18  1  0.110  0.607  0.115  1.0
  O  O19  1  0.127  0.193  0.640  1.0
  O  O20  1  0.125  0.404  0.318  1.0
  O  O21  1  0.139  0.462  0.740  1.0
  O  O22  1  0.151  0.841  0.409  1.0
  O  O23  1  0.195  0.095  0.144  1.0
  O  O24  1  0.237  0.363  0.062  1.0
  O  O25  1  0.263  0.637  0.562  1.0
  O  O26  1  0.305  0.905  0.644  1.0
  O  O27  1  0.349  0.159  0.909  1.0
  O  O28  1  0.361  0.538  0.240  1.0
  O  O29  1  0.375  0.596  0.818  1.0
  O  O30  1  0.373  0.807  0.140  1.0
  O  O31  1  0.390  0.393  0.615  1.0
  O  O32  1  0.413  0.119  0.416  1.0
  O  O33  1  0.458  0.217  0.157  1.0
  O  O34  1  0.542  0.717  0.343  1.0
  O  O35  1  0.587  0.619  0.084  1.0
  O  O36  1  0.610  0.893  0.885  1.0
  O  O37  1  0.627  0.307  0.360  1.0
  O  O38  1  0.625  0.096  0.682  1.0
  O  O39  1  0.639  0.038  0.260  1.0
  O  O40  1  0.651  0.659  0.591  1.0
  O  O41  1  0.695  0.405  0.856  1.0
  O  O42  1  0.737  0.137  0.938  1.0
  O  O43  1  0.763  0.863  0.438  1.0
  O  O44  1  0.805  0.595  0.356  1.0
  O  O45  1  0.849  0.341  0.091  1.0
  O  O46  1  0.861  0.962  0.760  1.0
  O  O47  1  0.875  0.904  0.182  1.0
  O  O48  1  0.873  0.693  0.860  1.0
  O  O49  1  0.890  0.107  0.385  1.0
  O  O50  1  0.913  0.381  0.584  1.0
  O  O51  1  0.958  0.283  0.843  1.0
[/CIF]
.