The crystal structure described by Cr(PO3)3 crystallizes in the monoclinic Cc space group. Cr(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(9) 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(4), one O(6), one O(8), 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 39-41°. In the second P site, P(2) is bonded to one O(1), one O(2), one O(5), 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(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 38-42°. In the third P site, P(3) is bonded to one O(3), one O(4), one O(5), and one O(7) 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 39-41°. There are nine inequivalent O sites. In the first O site, O(9) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the second O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(2) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(3) atom. In the fifth O site, O(4) is bonded in a bent 150 degrees geometry to one P(1) and one P(3) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one P(2) and one P(3) atom. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the eighth O site, O(7) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(3) atom. In the ninth O site, O(8) 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_Cr(PO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.611
_cell_length_b   6.611
_cell_length_c   9.672
_cell_angle_alpha   90.163
_cell_angle_beta   90.162
_cell_angle_gamma   60.095
_symmetry_Int_Tables_number   1
_cell_volume   366.405
_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
  Cr  Cr0  1  0.664  0.667  0.500  1.0
  Cr  Cr1  1  0.667  0.664  1.000  1.0
  P  P2  1  0.777  0.935  0.752  1.0
  P  P3  1  0.935  0.777  0.252  1.0
  P  P4  1  0.285  0.778  0.748  1.0
  P  P5  1  0.778  0.285  0.248  1.0
  P  P6  1  0.935  0.286  0.750  1.0
  P  P7  1  0.286  0.935  0.250  1.0
  O  O8  1  0.674  0.407  0.114  1.0
  O  O9  1  0.407  0.675  0.614  1.0
  O  O10  1  0.416  0.673  0.879  1.0
  O  O11  1  0.673  0.416  0.379  1.0
  O  O12  1  0.908  0.415  0.618  1.0
  O  O13  1  0.415  0.908  0.118  1.0
  O  O14  1  0.756  0.187  0.750  1.0
  O  O15  1  0.187  0.756  0.250  1.0
  O  O16  1  0.186  0.056  0.748  1.0
  O  O17  1  0.056  0.186  0.248  1.0
  O  O18  1  0.670  0.911  0.620  1.0
  O  O19  1  0.911  0.670  0.120  1.0
  O  O20  1  0.411  0.915  0.383  1.0
  O  O21  1  0.915  0.411  0.883  1.0
  O  O22  1  0.054  0.757  0.752  1.0
  O  O23  1  0.757  0.054  0.251  1.0
  O  O24  1  0.675  0.913  0.886  1.0
  O  O25  1  0.913  0.675  0.386  1.0
[/CIF]
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The crystal structure described by Cr(PO3)3 crystallizes in the monoclinic Cc space group. Cr(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(9) 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(4), one O(6), one O(8), 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 39-41°. In the second P site, P(2) is bonded to one O(1), one O(2), one O(5), 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(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 38-42°. In the third P site, P(3) is bonded to one O(3), one O(4), one O(5), and one O(7) 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 39-41°. There are nine inequivalent O sites. In the first O site, O(9) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the second O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(2) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(3) atom. In the fifth O site, O(4) is bonded in a bent 150 degrees geometry to one P(1) and one P(3) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to one P(2) and one P(3) atom. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the eighth O site, O(7) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(3) atom. In the ninth O site, O(8) 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_Cr(PO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.611
_cell_length_b   6.611
_cell_length_c   9.672
_cell_angle_alpha   90.163
_cell_angle_beta   90.162
_cell_angle_gamma   60.095
_symmetry_Int_Tables_number   1
_cell_volume   366.405
_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
  Cr  Cr0  1  0.664  0.667  0.500  1.0
  Cr  Cr1  1  0.667  0.664  1.000  1.0
  P  P2  1  0.777  0.935  0.752  1.0
  P  P3  1  0.935  0.777  0.252  1.0
  P  P4  1  0.285  0.778  0.748  1.0
  P  P5  1  0.778  0.285  0.248  1.0
  P  P6  1  0.935  0.286  0.750  1.0
  P  P7  1  0.286  0.935  0.250  1.0
  O  O8  1  0.674  0.407  0.114  1.0
  O  O9  1  0.407  0.675  0.614  1.0
  O  O10  1  0.416  0.673  0.879  1.0
  O  O11  1  0.673  0.416  0.379  1.0
  O  O12  1  0.908  0.415  0.618  1.0
  O  O13  1  0.415  0.908  0.118  1.0
  O  O14  1  0.756  0.187  0.750  1.0
  O  O15  1  0.187  0.756  0.250  1.0
  O  O16  1  0.186  0.056  0.748  1.0
  O  O17  1  0.056  0.186  0.248  1.0
  O  O18  1  0.670  0.911  0.620  1.0
  O  O19  1  0.911  0.670  0.120  1.0
  O  O20  1  0.411  0.915  0.383  1.0
  O  O21  1  0.915  0.411  0.883  1.0
  O  O22  1  0.054  0.757  0.752  1.0
  O  O23  1  0.757  0.054  0.251  1.0
  O  O24  1  0.675  0.913  0.886  1.0
  O  O25  1  0.913  0.675  0.386  1.0
[/CIF]
.