The material structure described by Cr(PO3)3 crystallizes in the monoclinic P2_1/c space group. Cr(1) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form CrO6 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(2), one O(3), one O(7), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Cr(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 44-49°. In the second P site, P(2) is bonded to one O(1), one O(4), one O(5), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Cr(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 43°. In the third P site, P(3) is bonded to one O(2), one O(4), one O(6), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Cr(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 34-44°. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one P(1) and one P(3) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cr(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(3) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(3) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr(PO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   15.248
_cell_length_b   6.232
_cell_length_c   8.322
_cell_angle_alpha   74.035
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   760.317
_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
  Cr  Cr0  1  0.637  0.119  0.124  1.0
  Cr  Cr1  1  0.863  0.119  0.624  1.0
  Cr  Cr2  1  0.137  0.881  0.376  1.0
  Cr  Cr3  1  0.363  0.881  0.876  1.0
  P  P4  1  0.955  0.150  0.279  1.0
  P  P5  1  0.387  0.412  0.792  1.0
  P  P6  1  0.613  0.588  0.208  1.0
  P  P7  1  0.161  0.793  0.016  1.0
  P  P8  1  0.661  0.207  0.484  1.0
  P  P9  1  0.113  0.412  0.292  1.0
  P  P10  1  0.339  0.793  0.516  1.0
  P  P11  1  0.887  0.588  0.708  1.0
  P  P12  1  0.455  0.850  0.221  1.0
  P  P13  1  0.545  0.150  0.779  1.0
  P  P14  1  0.045  0.850  0.721  1.0
  P  P15  1  0.839  0.207  0.984  1.0
  O  O16  1  0.388  0.566  0.900  1.0
  O  O17  1  0.075  0.837  0.905  1.0
  O  O18  1  0.925  0.163  0.095  1.0
  O  O19  1  0.378  0.826  0.119  1.0
  O  O20  1  0.652  0.464  0.387  1.0
  O  O21  1  0.575  0.163  0.595  1.0
  O  O22  1  0.840  0.803  0.644  1.0
  O  O23  1  0.340  0.197  0.856  1.0
  O  O24  1  0.848  0.464  0.887  1.0
  O  O25  1  0.347  0.934  0.633  1.0
  O  O26  1  0.011  0.946  0.340  1.0
  O  O27  1  0.878  0.174  0.381  1.0
  O  O28  1  0.262  0.816  0.405  1.0
  O  O29  1  0.014  0.369  0.246  1.0
  O  O30  1  0.989  0.054  0.660  1.0
  O  O31  1  0.660  0.803  0.144  1.0
  O  O32  1  0.612  0.434  0.100  1.0
  O  O33  1  0.160  0.197  0.356  1.0
  O  O34  1  0.514  0.631  0.254  1.0
  O  O35  1  0.847  0.066  0.867  1.0
  O  O36  1  0.762  0.184  0.095  1.0
  O  O37  1  0.738  0.184  0.595  1.0
  O  O38  1  0.112  0.566  0.400  1.0
  O  O39  1  0.489  0.946  0.840  1.0
  O  O40  1  0.511  0.054  0.160  1.0
  O  O41  1  0.238  0.816  0.905  1.0
  O  O42  1  0.152  0.536  0.113  1.0
  O  O43  1  0.122  0.826  0.619  1.0
  O  O44  1  0.425  0.837  0.405  1.0
  O  O45  1  0.986  0.631  0.754  1.0
  O  O46  1  0.348  0.536  0.613  1.0
  O  O47  1  0.153  0.934  0.133  1.0
  O  O48  1  0.622  0.174  0.881  1.0
  O  O49  1  0.486  0.369  0.746  1.0
  O  O50  1  0.888  0.434  0.600  1.0
  O  O51  1  0.653  0.066  0.367  1.0
[/CIF]
.
The material structure described by Cr(PO3)3 crystallizes in the monoclinic P2_1/c space group. Cr(1) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form CrO6 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(2), one O(3), one O(7), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Cr(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 44-49°. In the second P site, P(2) is bonded to one O(1), one O(4), one O(5), and one O(9) atom to form PO4 tetrahedra that share corners with two equivalent Cr(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 43°. In the third P site, P(3) is bonded to one O(2), one O(4), one O(6), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Cr(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 34-44°. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one P(1) and one P(3) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cr(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(3) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(3) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr(PO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   15.248
_cell_length_b   6.232
_cell_length_c   8.322
_cell_angle_alpha   74.035
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   760.317
_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
  Cr  Cr0  1  0.637  0.119  0.124  1.0
  Cr  Cr1  1  0.863  0.119  0.624  1.0
  Cr  Cr2  1  0.137  0.881  0.376  1.0
  Cr  Cr3  1  0.363  0.881  0.876  1.0
  P  P4  1  0.955  0.150  0.279  1.0
  P  P5  1  0.387  0.412  0.792  1.0
  P  P6  1  0.613  0.588  0.208  1.0
  P  P7  1  0.161  0.793  0.016  1.0
  P  P8  1  0.661  0.207  0.484  1.0
  P  P9  1  0.113  0.412  0.292  1.0
  P  P10  1  0.339  0.793  0.516  1.0
  P  P11  1  0.887  0.588  0.708  1.0
  P  P12  1  0.455  0.850  0.221  1.0
  P  P13  1  0.545  0.150  0.779  1.0
  P  P14  1  0.045  0.850  0.721  1.0
  P  P15  1  0.839  0.207  0.984  1.0
  O  O16  1  0.388  0.566  0.900  1.0
  O  O17  1  0.075  0.837  0.905  1.0
  O  O18  1  0.925  0.163  0.095  1.0
  O  O19  1  0.378  0.826  0.119  1.0
  O  O20  1  0.652  0.464  0.387  1.0
  O  O21  1  0.575  0.163  0.595  1.0
  O  O22  1  0.840  0.803  0.644  1.0
  O  O23  1  0.340  0.197  0.856  1.0
  O  O24  1  0.848  0.464  0.887  1.0
  O  O25  1  0.347  0.934  0.633  1.0
  O  O26  1  0.011  0.946  0.340  1.0
  O  O27  1  0.878  0.174  0.381  1.0
  O  O28  1  0.262  0.816  0.405  1.0
  O  O29  1  0.014  0.369  0.246  1.0
  O  O30  1  0.989  0.054  0.660  1.0
  O  O31  1  0.660  0.803  0.144  1.0
  O  O32  1  0.612  0.434  0.100  1.0
  O  O33  1  0.160  0.197  0.356  1.0
  O  O34  1  0.514  0.631  0.254  1.0
  O  O35  1  0.847  0.066  0.867  1.0
  O  O36  1  0.762  0.184  0.095  1.0
  O  O37  1  0.738  0.184  0.595  1.0
  O  O38  1  0.112  0.566  0.400  1.0
  O  O39  1  0.489  0.946  0.840  1.0
  O  O40  1  0.511  0.054  0.160  1.0
  O  O41  1  0.238  0.816  0.905  1.0
  O  O42  1  0.152  0.536  0.113  1.0
  O  O43  1  0.122  0.826  0.619  1.0
  O  O44  1  0.425  0.837  0.405  1.0
  O  O45  1  0.986  0.631  0.754  1.0
  O  O46  1  0.348  0.536  0.613  1.0
  O  O47  1  0.153  0.934  0.133  1.0
  O  O48  1  0.622  0.174  0.881  1.0
  O  O49  1  0.486  0.369  0.746  1.0
  O  O50  1  0.888  0.434  0.600  1.0
  O  O51  1  0.653  0.066  0.367  1.0
[/CIF]
.