The structure described by Sb3P3O13 crystallizes in the monoclinic P2_1/m space group. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(1), one O(5), one O(6), one O(9), and two equivalent O(8) atoms to form SbO6 octahedra that share corners with two equivalent Sb(3)O6 octahedra,  a cornercorner with one Sb(2)O5 square pyramid,  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. In the second Sb site, Sb(2) is bonded to one O(1), one O(3), one O(7), and two equivalent O(2) atoms to form distorted SbO5 square pyramids that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with three equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. In the third Sb site, Sb(3) is bonded to two equivalent O(10), two equivalent O(4), and two equivalent O(6) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and edges with two equivalent Sb(3)O6 octahedra. The corner-sharing octahedral tilt angles are 51°. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(5), one O(7), and two equivalent O(2) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra and corners with three equivalent Sb(2)O5 square pyramids. The corner-sharing octahedral tilt angles are 31°. In the second P site, P(2) is bonded to one O(10), one O(3), and two equivalent O(8) atoms to form PO4 tetrahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with two equivalent Sb(3)O6 octahedra, and  a cornercorner with one Sb(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 37-51°. In the third P site, P(3) is bonded to one O(1), one O(9), and two equivalent O(4) atoms to form PO4 tetrahedra that share corners with two equivalent Sb(3)O6 octahedra,  a cornercorner with one Sb(2)O5 square pyramid, and  an edgeedge with one Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 48°. There are ten inequivalent O sites. In the first O site, O(10) is bonded in a 3-coordinate geometry to two equivalent Sb(3) and one P(2) atom. In the second O site, O(1) is bonded in a 3-coordinate geometry to one Sb(1), one Sb(2), and one P(3) atom. In the third O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Sb(2) and one P(1) atom. In the fourth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Sb(2) and one P(2) atom. In the fifth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sb(3) and one P(3) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one Sb(1) and one P(1) atom. In the seventh O site, O(6) is bonded in a distorted trigonal planar geometry to one Sb(1) and two equivalent Sb(3) atoms. In the eighth O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Sb(2) and one P(1) atom. In the ninth O site, O(8) is bonded in a bent 150 degrees geometry to one Sb(1) and one P(2) atom. In the tenth O site, O(9) is bonded in an L-shaped geometry to one Sb(1) and one P(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sb3P3O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.719
_cell_length_b   7.826
_cell_length_c   11.408
_cell_angle_alpha   86.790
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   598.930
_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
  Sb  Sb0  1  0.250  0.651  0.201  1.0
  Sb  Sb1  1  0.750  0.349  0.799  1.0
  Sb  Sb2  1  0.250  0.251  0.469  1.0
  Sb  Sb3  1  0.500  0.000  0.000  1.0
  Sb  Sb4  1  0.750  0.749  0.531  1.0
  Sb  Sb5  1  0.000  0.000  0.000  1.0
  P  P6  1  0.250  0.820  0.472  1.0
  P  P7  1  0.750  0.180  0.528  1.0
  P  P8  1  0.250  0.245  0.771  1.0
  P  P9  1  0.750  0.755  0.229  1.0
  P  P10  1  0.750  0.668  0.881  1.0
  P  P11  1  0.250  0.332  0.119  1.0
  O  O12  1  0.750  0.605  0.749  1.0
  O  O13  1  0.566  0.220  0.453  1.0
  O  O14  1  0.250  0.169  0.650  1.0
  O  O15  1  0.558  0.765  0.905  1.0
  O  O16  1  0.750  0.311  0.630  1.0
  O  O17  1  0.750  0.128  0.887  1.0
  O  O18  1  0.250  0.689  0.370  1.0
  O  O19  1  0.058  0.235  0.095  1.0
  O  O20  1  0.250  0.005  0.413  1.0
  O  O21  1  0.750  0.995  0.587  1.0
  O  O22  1  0.062  0.357  0.791  1.0
  O  O23  1  0.250  0.872  0.113  1.0
  O  O24  1  0.562  0.643  0.209  1.0
  O  O25  1  0.750  0.482  0.946  1.0
  O  O26  1  0.750  0.831  0.350  1.0
  O  O27  1  0.442  0.235  0.095  1.0
  O  O28  1  0.934  0.220  0.453  1.0
  O  O29  1  0.434  0.780  0.547  1.0
  O  O30  1  0.438  0.357  0.791  1.0
  O  O31  1  0.250  0.395  0.251  1.0
  O  O32  1  0.750  0.910  0.134  1.0
  O  O33  1  0.250  0.090  0.866  1.0
  O  O34  1  0.938  0.643  0.209  1.0
  O  O35  1  0.942  0.765  0.905  1.0
  O  O36  1  0.066  0.780  0.547  1.0
  O  O37  1  0.250  0.518  0.054  1.0
[/CIF]
.
The structure described by Sb3P3O13 crystallizes in the monoclinic P2_1/m space group. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(1), one O(5), one O(6), one O(9), and two equivalent O(8) atoms to form SbO6 octahedra that share corners with two equivalent Sb(3)O6 octahedra,  a cornercorner with one Sb(2)O5 square pyramid,  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. In the second Sb site, Sb(2) is bonded to one O(1), one O(3), one O(7), and two equivalent O(2) atoms to form distorted SbO5 square pyramids that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with three equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. In the third Sb site, Sb(3) is bonded to two equivalent O(10), two equivalent O(4), and two equivalent O(6) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and edges with two equivalent Sb(3)O6 octahedra. The corner-sharing octahedral tilt angles are 51°. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(5), one O(7), and two equivalent O(2) atoms to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra and corners with three equivalent Sb(2)O5 square pyramids. The corner-sharing octahedral tilt angles are 31°. In the second P site, P(2) is bonded to one O(10), one O(3), and two equivalent O(8) atoms to form PO4 tetrahedra that share corners with two equivalent Sb(1)O6 octahedra, corners with two equivalent Sb(3)O6 octahedra, and  a cornercorner with one Sb(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 37-51°. In the third P site, P(3) is bonded to one O(1), one O(9), and two equivalent O(4) atoms to form PO4 tetrahedra that share corners with two equivalent Sb(3)O6 octahedra,  a cornercorner with one Sb(2)O5 square pyramid, and  an edgeedge with one Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles are 48°. There are ten inequivalent O sites. In the first O site, O(10) is bonded in a 3-coordinate geometry to two equivalent Sb(3) and one P(2) atom. In the second O site, O(1) is bonded in a 3-coordinate geometry to one Sb(1), one Sb(2), and one P(3) atom. In the third O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Sb(2) and one P(1) atom. In the fourth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Sb(2) and one P(2) atom. In the fifth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sb(3) and one P(3) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one Sb(1) and one P(1) atom. In the seventh O site, O(6) is bonded in a distorted trigonal planar geometry to one Sb(1) and two equivalent Sb(3) atoms. In the eighth O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Sb(2) and one P(1) atom. In the ninth O site, O(8) is bonded in a bent 150 degrees geometry to one Sb(1) and one P(2) atom. In the tenth O site, O(9) is bonded in an L-shaped geometry to one Sb(1) and one P(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sb3P3O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.719
_cell_length_b   7.826
_cell_length_c   11.408
_cell_angle_alpha   86.790
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   598.930
_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
  Sb  Sb0  1  0.250  0.651  0.201  1.0
  Sb  Sb1  1  0.750  0.349  0.799  1.0
  Sb  Sb2  1  0.250  0.251  0.469  1.0
  Sb  Sb3  1  0.500  0.000  0.000  1.0
  Sb  Sb4  1  0.750  0.749  0.531  1.0
  Sb  Sb5  1  0.000  0.000  0.000  1.0
  P  P6  1  0.250  0.820  0.472  1.0
  P  P7  1  0.750  0.180  0.528  1.0
  P  P8  1  0.250  0.245  0.771  1.0
  P  P9  1  0.750  0.755  0.229  1.0
  P  P10  1  0.750  0.668  0.881  1.0
  P  P11  1  0.250  0.332  0.119  1.0
  O  O12  1  0.750  0.605  0.749  1.0
  O  O13  1  0.566  0.220  0.453  1.0
  O  O14  1  0.250  0.169  0.650  1.0
  O  O15  1  0.558  0.765  0.905  1.0
  O  O16  1  0.750  0.311  0.630  1.0
  O  O17  1  0.750  0.128  0.887  1.0
  O  O18  1  0.250  0.689  0.370  1.0
  O  O19  1  0.058  0.235  0.095  1.0
  O  O20  1  0.250  0.005  0.413  1.0
  O  O21  1  0.750  0.995  0.587  1.0
  O  O22  1  0.062  0.357  0.791  1.0
  O  O23  1  0.250  0.872  0.113  1.0
  O  O24  1  0.562  0.643  0.209  1.0
  O  O25  1  0.750  0.482  0.946  1.0
  O  O26  1  0.750  0.831  0.350  1.0
  O  O27  1  0.442  0.235  0.095  1.0
  O  O28  1  0.934  0.220  0.453  1.0
  O  O29  1  0.434  0.780  0.547  1.0
  O  O30  1  0.438  0.357  0.791  1.0
  O  O31  1  0.250  0.395  0.251  1.0
  O  O32  1  0.750  0.910  0.134  1.0
  O  O33  1  0.250  0.090  0.866  1.0
  O  O34  1  0.938  0.643  0.209  1.0
  O  O35  1  0.942  0.765  0.905  1.0
  O  O36  1  0.066  0.780  0.547  1.0
  O  O37  1  0.250  0.518  0.054  1.0
[/CIF]
.