The compound described by Cr2P3O10 crystallizes in the monoclinic P2_1/m space group. Cr(1) is bonded to one O(2), one O(3), one O(6), one O(7), and two equivalent O(1) atoms to form distorted CrO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and edges with two equivalent Cr(1)O6 octahedra. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(3), one O(4), and two equivalent O(6) atoms to form PO4 tetrahedra that share corners with four equivalent Cr(1)O6 octahedra and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-54°. In the second P site, P(2) is bonded to one O(5), one O(7), and two equivalent O(1) atoms to form PO4 tetrahedra that share corners with six equivalent Cr(1)O6 octahedra and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-56°. In the third P site, P(3) is bonded to one O(4), one O(5), and two equivalent O(2) atoms 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 are 26°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Cr(1) and one P(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent 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(1) and one P(3) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(2) and one P(3) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Cr(1) and one P(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to two equivalent Cr(1) and one P(2) atom. is represented by the CIF card [CIF]
data_Cr2P3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.571
_cell_length_b   4.721
_cell_length_c   9.098
_cell_angle_alpha   80.137
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   362.713
_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  0.567  0.949  0.324  1.0
  Cr  Cr1  1  0.933  0.949  0.324  1.0
  Cr  Cr2  1  0.433  0.051  0.676  1.0
  Cr  Cr3  1  0.067  0.051  0.676  1.0
  P  P4  1  0.750  0.530  0.144  1.0
  P  P5  1  0.750  0.400  0.541  1.0
  P  P6  1  0.250  0.470  0.856  1.0
  P  P7  1  0.250  0.326  0.183  1.0
  P  P8  1  0.250  0.600  0.459  1.0
  P  P9  1  0.750  0.674  0.817  1.0
  O  O10  1  0.100  0.766  0.482  1.0
  O  O11  1  0.600  0.838  0.797  1.0
  O  O12  1  0.100  0.162  0.203  1.0
  O  O13  1  0.750  0.215  0.234  1.0
  O  O14  1  0.750  0.467  0.974  1.0
  O  O15  1  0.900  0.234  0.518  1.0
  O  O16  1  0.900  0.838  0.797  1.0
  O  O17  1  0.250  0.785  0.766  1.0
  O  O18  1  0.250  0.568  0.288  1.0
  O  O19  1  0.400  0.162  0.203  1.0
  O  O20  1  0.100  0.315  0.831  1.0
  O  O21  1  0.600  0.234  0.518  1.0
  O  O22  1  0.900  0.685  0.169  1.0
  O  O23  1  0.400  0.315  0.831  1.0
  O  O24  1  0.750  0.706  0.444  1.0
  O  O25  1  0.250  0.533  0.026  1.0
  O  O26  1  0.400  0.766  0.482  1.0
  O  O27  1  0.750  0.432  0.712  1.0
  O  O28  1  0.250  0.294  0.556  1.0
  O  O29  1  0.600  0.685  0.169  1.0
[/CIF]
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The compound described by Cr2P3O10 crystallizes in the monoclinic P2_1/m space group. Cr(1) is bonded to one O(2), one O(3), one O(6), one O(7), and two equivalent O(1) atoms to form distorted CrO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and edges with two equivalent Cr(1)O6 octahedra. There are three inequivalent P sites. In the first P site, P(1) is bonded to one O(3), one O(4), and two equivalent O(6) atoms to form PO4 tetrahedra that share corners with four equivalent Cr(1)O6 octahedra and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-54°. In the second P site, P(2) is bonded to one O(5), one O(7), and two equivalent O(1) atoms to form PO4 tetrahedra that share corners with six equivalent Cr(1)O6 octahedra and  a cornercorner with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-56°. In the third P site, P(3) is bonded to one O(4), one O(5), and two equivalent O(2) atoms 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 are 26°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Cr(1) and one P(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Cr(1) and one P(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent 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(1) and one P(3) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(2) and one P(3) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Cr(1) and one P(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to two equivalent Cr(1) and one P(2) atom. is represented by the CIF card [CIF]
data_Cr2P3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.571
_cell_length_b   4.721
_cell_length_c   9.098
_cell_angle_alpha   80.137
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   362.713
_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  0.567  0.949  0.324  1.0
  Cr  Cr1  1  0.933  0.949  0.324  1.0
  Cr  Cr2  1  0.433  0.051  0.676  1.0
  Cr  Cr3  1  0.067  0.051  0.676  1.0
  P  P4  1  0.750  0.530  0.144  1.0
  P  P5  1  0.750  0.400  0.541  1.0
  P  P6  1  0.250  0.470  0.856  1.0
  P  P7  1  0.250  0.326  0.183  1.0
  P  P8  1  0.250  0.600  0.459  1.0
  P  P9  1  0.750  0.674  0.817  1.0
  O  O10  1  0.100  0.766  0.482  1.0
  O  O11  1  0.600  0.838  0.797  1.0
  O  O12  1  0.100  0.162  0.203  1.0
  O  O13  1  0.750  0.215  0.234  1.0
  O  O14  1  0.750  0.467  0.974  1.0
  O  O15  1  0.900  0.234  0.518  1.0
  O  O16  1  0.900  0.838  0.797  1.0
  O  O17  1  0.250  0.785  0.766  1.0
  O  O18  1  0.250  0.568  0.288  1.0
  O  O19  1  0.400  0.162  0.203  1.0
  O  O20  1  0.100  0.315  0.831  1.0
  O  O21  1  0.600  0.234  0.518  1.0
  O  O22  1  0.900  0.685  0.169  1.0
  O  O23  1  0.400  0.315  0.831  1.0
  O  O24  1  0.750  0.706  0.444  1.0
  O  O25  1  0.250  0.533  0.026  1.0
  O  O26  1  0.400  0.766  0.482  1.0
  O  O27  1  0.750  0.432  0.712  1.0
  O  O28  1  0.250  0.294  0.556  1.0
  O  O29  1  0.600  0.685  0.169  1.0
[/CIF]
.