The material structure described by Cr(PO3)4 crystallizes in the monoclinic P2_1 space group. Cr(1) is bonded to one O(1), one O(10), one O(11), one O(7), one O(8), and one O(9) atom to form CrO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(3), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(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 39°. In the second P site, P(2) is bonded to one O(1), 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(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 43-48°. In the third P site, P(3) is bonded to one O(2), one O(5), 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(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 44-48°. In the fourth P site, P(4) is bonded to one O(11), one O(12), one O(2), and one O(3) atom to form PO4 tetrahedra that share  a cornercorner with one 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 48°. There are twelve inequivalent O sites. In the first O site, O(12) is bonded in a single-bond geometry to one P(4) atom. In the second O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Cr(1) and one P(2) atom. In the third O site, O(2) is bonded in a bent 120 degrees geometry to one P(3) and one P(4) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. In the fifth O site, O(4) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) 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 single-bond geometry to one P(1) atom. In the eighth O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(2) atom. In the ninth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(3) atom. In the tenth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Cr(1) and one P(3) atom. In the eleventh O site, O(10) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the twelfth O site, O(11) is bonded in a bent 120 degrees geometry to one Cr(1) and one P(4) atom. is represented by the CIF card [CIF]
data_Cr(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.568
_cell_length_b   5.159
_cell_length_c   7.443
_cell_angle_alpha   79.473
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   512.145
_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  0.233  0.997  0.507  1.0
  Cr  Cr1  1  0.733  0.003  0.493  1.0
  P  P2  1  0.178  0.633  0.899  1.0
  P  P3  1  0.678  0.367  0.101  1.0
  P  P4  1  0.596  0.524  0.433  1.0
  P  P5  1  0.096  0.476  0.567  1.0
  P  P6  1  0.870  0.481  0.557  1.0
  P  P7  1  0.370  0.519  0.443  1.0
  P  P8  1  0.322  0.281  0.130  1.0
  P  P9  1  0.822  0.719  0.870  1.0
  O  O10  1  0.612  0.797  0.476  1.0
  O  O11  1  0.112  0.203  0.524  1.0
  O  O12  1  0.352  0.529  0.229  1.0
  O  O13  1  0.852  0.471  0.771  1.0
  O  O14  1  0.269  0.427  0.949  1.0
  O  O15  1  0.769  0.573  0.051  1.0
  O  O16  1  0.109  0.466  0.781  1.0
  O  O17  1  0.609  0.534  0.219  1.0
  O  O18  1  0.484  0.447  0.472  1.0
  O  O19  1  0.984  0.553  0.528  1.0
  O  O20  1  0.626  0.304  0.942  1.0
  O  O21  1  0.126  0.696  0.058  1.0
  O  O22  1  0.655  0.304  0.542  1.0
  O  O23  1  0.155  0.696  0.458  1.0
  O  O24  1  0.314  0.295  0.556  1.0
  O  O25  1  0.814  0.705  0.444  1.0
  O  O26  1  0.855  0.211  0.512  1.0
  O  O27  1  0.355  0.789  0.488  1.0
  O  O28  1  0.726  0.142  0.237  1.0
  O  O29  1  0.226  0.858  0.763  1.0
  O  O30  1  0.241  0.127  0.252  1.0
  O  O31  1  0.741  0.873  0.748  1.0
  O  O32  1  0.407  0.125  0.090  1.0
  O  O33  1  0.907  0.875  0.910  1.0
[/CIF]
.
The material structure described by Cr(PO3)4 crystallizes in the monoclinic P2_1 space group. Cr(1) is bonded to one O(1), one O(10), one O(11), one O(7), one O(8), and one O(9) atom to form CrO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(10), one O(3), one O(4), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(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 39°. In the second P site, P(2) is bonded to one O(1), 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(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 43-48°. In the third P site, P(3) is bonded to one O(2), one O(5), 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(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 44-48°. In the fourth P site, P(4) is bonded to one O(11), one O(12), one O(2), and one O(3) atom to form PO4 tetrahedra that share  a cornercorner with one 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 48°. There are twelve inequivalent O sites. In the first O site, O(12) is bonded in a single-bond geometry to one P(4) atom. In the second O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Cr(1) and one P(2) atom. In the third O site, O(2) is bonded in a bent 120 degrees geometry to one P(3) and one P(4) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. In the fifth O site, O(4) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) 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 single-bond geometry to one P(1) atom. In the eighth O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(2) atom. In the ninth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(3) atom. In the tenth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Cr(1) and one P(3) atom. In the eleventh O site, O(10) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the twelfth O site, O(11) is bonded in a bent 120 degrees geometry to one Cr(1) and one P(4) atom. is represented by the CIF card [CIF]
data_Cr(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.568
_cell_length_b   5.159
_cell_length_c   7.443
_cell_angle_alpha   79.473
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   512.145
_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  0.233  0.997  0.507  1.0
  Cr  Cr1  1  0.733  0.003  0.493  1.0
  P  P2  1  0.178  0.633  0.899  1.0
  P  P3  1  0.678  0.367  0.101  1.0
  P  P4  1  0.596  0.524  0.433  1.0
  P  P5  1  0.096  0.476  0.567  1.0
  P  P6  1  0.870  0.481  0.557  1.0
  P  P7  1  0.370  0.519  0.443  1.0
  P  P8  1  0.322  0.281  0.130  1.0
  P  P9  1  0.822  0.719  0.870  1.0
  O  O10  1  0.612  0.797  0.476  1.0
  O  O11  1  0.112  0.203  0.524  1.0
  O  O12  1  0.352  0.529  0.229  1.0
  O  O13  1  0.852  0.471  0.771  1.0
  O  O14  1  0.269  0.427  0.949  1.0
  O  O15  1  0.769  0.573  0.051  1.0
  O  O16  1  0.109  0.466  0.781  1.0
  O  O17  1  0.609  0.534  0.219  1.0
  O  O18  1  0.484  0.447  0.472  1.0
  O  O19  1  0.984  0.553  0.528  1.0
  O  O20  1  0.626  0.304  0.942  1.0
  O  O21  1  0.126  0.696  0.058  1.0
  O  O22  1  0.655  0.304  0.542  1.0
  O  O23  1  0.155  0.696  0.458  1.0
  O  O24  1  0.314  0.295  0.556  1.0
  O  O25  1  0.814  0.705  0.444  1.0
  O  O26  1  0.855  0.211  0.512  1.0
  O  O27  1  0.355  0.789  0.488  1.0
  O  O28  1  0.726  0.142  0.237  1.0
  O  O29  1  0.226  0.858  0.763  1.0
  O  O30  1  0.241  0.127  0.252  1.0
  O  O31  1  0.741  0.873  0.748  1.0
  O  O32  1  0.407  0.125  0.090  1.0
  O  O33  1  0.907  0.875  0.910  1.0
[/CIF]
.