The material described by Sb(PO3)4 crystallizes in the monoclinic P2_1 space group. Sb(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 SbO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(12), one O(2), one O(3), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Sb(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-48°. In the second P site, P(2) is bonded to one O(12), one O(5), one O(7), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Sb(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 45-51°. In the third P site, P(3) is bonded to one O(1), one O(10), one O(8), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles are 44°. In the fourth P site, P(4) is bonded to one O(1), one O(11), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Sb(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 are 47°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one P(3) and one P(4) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(4) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Sb(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Sb(1) and one P(3) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one P(2) and one P(3) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one P(3) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one P(4) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sb(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.058
_cell_length_b   5.385
_cell_length_c   7.387
_cell_angle_alpha   80.808
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   552.050
_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  0.738  0.514  0.487  1.0
  Sb  Sb1  1  0.238  0.486  0.513  1.0
  P  P2  1  0.881  1.000  0.560  1.0
  P  P3  1  0.098  0.973  0.564  1.0
  P  P4  1  0.381  0.000  0.440  1.0
  P  P5  1  0.669  0.879  0.083  1.0
  P  P6  1  0.321  0.774  0.112  1.0
  P  P7  1  0.598  0.027  0.436  1.0
  P  P8  1  0.169  0.121  0.917  1.0
  P  P9  1  0.821  0.226  0.888  1.0
  O  O10  1  0.764  0.047  0.046  1.0
  O  O11  1  0.327  0.797  0.566  1.0
  O  O12  1  0.367  0.267  0.479  1.0
  O  O13  1  0.744  0.379  0.765  1.0
  O  O14  1  0.159  0.175  0.453  1.0
  O  O15  1  0.361  0.988  0.232  1.0
  O  O16  1  0.109  0.712  0.513  1.0
  O  O17  1  0.867  0.733  0.521  1.0
  O  O18  1  0.827  0.203  0.434  1.0
  O  O19  1  0.703  0.632  0.203  1.0
  O  O20  1  0.861  0.012  0.768  1.0
  O  O21  1  0.264  0.953  0.954  1.0
  O  O22  1  0.614  0.042  0.223  1.0
  O  O23  1  0.203  0.368  0.797  1.0
  O  O24  1  0.114  0.958  0.777  1.0
  O  O25  1  0.610  0.863  0.923  1.0
  O  O26  1  0.898  0.358  0.964  1.0
  O  O27  1  0.659  0.825  0.547  1.0
  O  O28  1  0.609  0.288  0.487  1.0
  O  O29  1  0.110  0.137  0.077  1.0
  O  O30  1  0.244  0.621  0.235  1.0
  O  O31  1  0.991  0.066  0.530  1.0
  O  O32  1  0.491  0.934  0.470  1.0
  O  O33  1  0.398  0.642  0.036  1.0
[/CIF]
.
The material described by Sb(PO3)4 crystallizes in the monoclinic P2_1 space group. Sb(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 SbO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(12), one O(2), one O(3), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Sb(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-48°. In the second P site, P(2) is bonded to one O(12), one O(5), one O(7), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Sb(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 45-51°. In the third P site, P(3) is bonded to one O(1), one O(10), one O(8), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Sb(1)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles are 44°. In the fourth P site, P(4) is bonded to one O(1), one O(11), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Sb(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 are 47°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one P(3) and one P(4) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(4) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Sb(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Sb(1) and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Sb(1) and one P(3) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one P(2) and one P(3) atom. In the tenth O site, O(10) is bonded in a single-bond geometry to one P(3) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one P(4) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sb(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.058
_cell_length_b   5.385
_cell_length_c   7.387
_cell_angle_alpha   80.808
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   552.050
_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  0.738  0.514  0.487  1.0
  Sb  Sb1  1  0.238  0.486  0.513  1.0
  P  P2  1  0.881  1.000  0.560  1.0
  P  P3  1  0.098  0.973  0.564  1.0
  P  P4  1  0.381  0.000  0.440  1.0
  P  P5  1  0.669  0.879  0.083  1.0
  P  P6  1  0.321  0.774  0.112  1.0
  P  P7  1  0.598  0.027  0.436  1.0
  P  P8  1  0.169  0.121  0.917  1.0
  P  P9  1  0.821  0.226  0.888  1.0
  O  O10  1  0.764  0.047  0.046  1.0
  O  O11  1  0.327  0.797  0.566  1.0
  O  O12  1  0.367  0.267  0.479  1.0
  O  O13  1  0.744  0.379  0.765  1.0
  O  O14  1  0.159  0.175  0.453  1.0
  O  O15  1  0.361  0.988  0.232  1.0
  O  O16  1  0.109  0.712  0.513  1.0
  O  O17  1  0.867  0.733  0.521  1.0
  O  O18  1  0.827  0.203  0.434  1.0
  O  O19  1  0.703  0.632  0.203  1.0
  O  O20  1  0.861  0.012  0.768  1.0
  O  O21  1  0.264  0.953  0.954  1.0
  O  O22  1  0.614  0.042  0.223  1.0
  O  O23  1  0.203  0.368  0.797  1.0
  O  O24  1  0.114  0.958  0.777  1.0
  O  O25  1  0.610  0.863  0.923  1.0
  O  O26  1  0.898  0.358  0.964  1.0
  O  O27  1  0.659  0.825  0.547  1.0
  O  O28  1  0.609  0.288  0.487  1.0
  O  O29  1  0.110  0.137  0.077  1.0
  O  O30  1  0.244  0.621  0.235  1.0
  O  O31  1  0.991  0.066  0.530  1.0
  O  O32  1  0.491  0.934  0.470  1.0
  O  O33  1  0.398  0.642  0.036  1.0
[/CIF]
.