The material described by Li2Cr(PO3)4 crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(3), and two equivalent O(6) atoms. Cr(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted CrO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with four equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(4), one O(6), and one O(7) 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(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(4), and one O(5) 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 42-66°. There are seven inequivalent O sites. In the first O site, O(3) is bonded in a 3-coordinate geometry to one Li(1), one Cr(1), and one P(2) atom. In the second O site, O(4) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the third O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent P(2) atoms. In the fourth O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Li(1) and one P(1) atom. In the fifth O site, O(7) is bonded in a bent 120 degrees geometry to two equivalent P(1) atoms. In the sixth O site, O(1) is bonded in a 3-coordinate geometry to one Li(1), one Cr(1), and one P(1) atom. In the seventh O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(2) atom. is represented by the CIF card [CIF]
data_Li2Cr(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.503
_cell_length_b   8.503
_cell_length_c   7.461
_cell_angle_alpha   88.366
_cell_angle_beta   88.366
_cell_angle_gamma   114.594
_symmetry_Int_Tables_number   1
_cell_volume   489.810
_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
  Li  Li0  1  0.503  0.820  0.313  1.0
  Li  Li1  1  0.497  0.180  0.687  1.0
  Li  Li2  1  0.180  0.497  0.187  1.0
  Li  Li3  1  0.820  0.503  0.813  1.0
  Cr  Cr4  1  0.129  0.871  0.750  1.0
  Cr  Cr5  1  0.871  0.129  0.250  1.0
  P  P6  1  0.221  0.562  0.613  1.0
  P  P7  1  0.228  0.072  0.317  1.0
  P  P8  1  0.928  0.772  0.183  1.0
  P  P9  1  0.772  0.928  0.683  1.0
  P  P10  1  0.779  0.438  0.387  1.0
  P  P11  1  0.438  0.779  0.887  1.0
  P  P12  1  0.562  0.221  0.113  1.0
  P  P13  1  0.072  0.228  0.817  1.0
  O  O14  1  0.379  0.916  0.820  1.0
  O  O15  1  0.167  0.114  0.825  1.0
  O  O16  1  0.833  0.886  0.175  1.0
  O  O17  1  0.886  0.833  0.675  1.0
  O  O18  1  0.938  0.675  0.022  1.0
  O  O19  1  0.675  0.938  0.522  1.0
  O  O20  1  0.848  0.642  0.358  1.0
  O  O21  1  0.642  0.848  0.858  1.0
  O  O22  1  0.916  0.379  0.320  1.0
  O  O23  1  0.878  0.122  0.750  1.0
  O  O24  1  0.389  0.705  0.075  1.0
  O  O25  1  0.623  0.377  0.250  1.0
  O  O26  1  0.122  0.878  0.250  1.0
  O  O27  1  0.062  0.325  0.978  1.0
  O  O28  1  0.295  0.611  0.425  1.0
  O  O29  1  0.114  0.167  0.325  1.0
  O  O30  1  0.377  0.623  0.750  1.0
  O  O31  1  0.611  0.295  0.925  1.0
  O  O32  1  0.621  0.084  0.180  1.0
  O  O33  1  0.084  0.621  0.680  1.0
  O  O34  1  0.358  0.152  0.142  1.0
  O  O35  1  0.152  0.358  0.642  1.0
  O  O36  1  0.325  0.062  0.478  1.0
  O  O37  1  0.705  0.389  0.575  1.0
[/CIF]
.
The material described by Li2Cr(PO3)4 crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(3), and two equivalent O(6) atoms. Cr(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted CrO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with four equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(4), one O(6), and one O(7) 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(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(4), and one O(5) 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 42-66°. There are seven inequivalent O sites. In the first O site, O(3) is bonded in a 3-coordinate geometry to one Li(1), one Cr(1), and one P(2) atom. In the second O site, O(4) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the third O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent P(2) atoms. In the fourth O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Li(1) and one P(1) atom. In the fifth O site, O(7) is bonded in a bent 120 degrees geometry to two equivalent P(1) atoms. In the sixth O site, O(1) is bonded in a 3-coordinate geometry to one Li(1), one Cr(1), and one P(1) atom. In the seventh O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(2) atom. is represented by the CIF card [CIF]
data_Li2Cr(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.503
_cell_length_b   8.503
_cell_length_c   7.461
_cell_angle_alpha   88.366
_cell_angle_beta   88.366
_cell_angle_gamma   114.594
_symmetry_Int_Tables_number   1
_cell_volume   489.810
_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
  Li  Li0  1  0.503  0.820  0.313  1.0
  Li  Li1  1  0.497  0.180  0.687  1.0
  Li  Li2  1  0.180  0.497  0.187  1.0
  Li  Li3  1  0.820  0.503  0.813  1.0
  Cr  Cr4  1  0.129  0.871  0.750  1.0
  Cr  Cr5  1  0.871  0.129  0.250  1.0
  P  P6  1  0.221  0.562  0.613  1.0
  P  P7  1  0.228  0.072  0.317  1.0
  P  P8  1  0.928  0.772  0.183  1.0
  P  P9  1  0.772  0.928  0.683  1.0
  P  P10  1  0.779  0.438  0.387  1.0
  P  P11  1  0.438  0.779  0.887  1.0
  P  P12  1  0.562  0.221  0.113  1.0
  P  P13  1  0.072  0.228  0.817  1.0
  O  O14  1  0.379  0.916  0.820  1.0
  O  O15  1  0.167  0.114  0.825  1.0
  O  O16  1  0.833  0.886  0.175  1.0
  O  O17  1  0.886  0.833  0.675  1.0
  O  O18  1  0.938  0.675  0.022  1.0
  O  O19  1  0.675  0.938  0.522  1.0
  O  O20  1  0.848  0.642  0.358  1.0
  O  O21  1  0.642  0.848  0.858  1.0
  O  O22  1  0.916  0.379  0.320  1.0
  O  O23  1  0.878  0.122  0.750  1.0
  O  O24  1  0.389  0.705  0.075  1.0
  O  O25  1  0.623  0.377  0.250  1.0
  O  O26  1  0.122  0.878  0.250  1.0
  O  O27  1  0.062  0.325  0.978  1.0
  O  O28  1  0.295  0.611  0.425  1.0
  O  O29  1  0.114  0.167  0.325  1.0
  O  O30  1  0.377  0.623  0.750  1.0
  O  O31  1  0.611  0.295  0.925  1.0
  O  O32  1  0.621  0.084  0.180  1.0
  O  O33  1  0.084  0.621  0.680  1.0
  O  O34  1  0.358  0.152  0.142  1.0
  O  O35  1  0.152  0.358  0.642  1.0
  O  O36  1  0.325  0.062  0.478  1.0
  O  O37  1  0.705  0.389  0.575  1.0
[/CIF]
.