The structure described by Li2CrPO4F crystallizes in the triclinic P1 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(4), one O(5), one O(6), one O(7), and one F(2) atom to form distorted LiO4F trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, edges with two equivalent Cr(1)O4F2 octahedra, and  an edgeedge with one P(1)O4 tetrahedra. In the second Li site, Li(2) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(5), one O(6), one O(8), and one F(1) atom. In the third Li site, Li(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(7), one F(1), and one F(2) atom. In the fourth Li site, Li(4) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), one O(8), and one F(1) atom. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(4), one O(5), one O(6), one O(8), one F(1), and one F(2) atom to form CrO4F2 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and edges with two equivalent Li(1)O4F trigonal bipyramids. In the second Cr site, Cr(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(7), one F(1), and one F(2) atom. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Cr(1)O4F2 octahedra,  a cornercorner with one Li(1)O4F trigonal bipyramid, and  an edgeedge with one Li(1)O4F trigonal bipyramid. The corner-sharing octahedral tilt angles range from 32-57°. In the second P site, P(2) is bonded to one O(1), one O(3), one O(4), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Cr(1)O4F2 octahedra and  a cornercorner with one Li(1)O4F trigonal bipyramid. The corner-sharing octahedral tilt angles range from 20-57°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Li(2), one Li(3), one Cr(2), and one P(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(3), one Cr(2), and one P(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Li(2), one Li(3), one Li(4), one Cr(2), and one P(2) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(4), one Cr(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Li(1), one Li(2), one Li(4), one Cr(1), and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted see-saw-like geometry to one Li(1), one Li(2), one Cr(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Li(3), one Cr(2), and one P(1) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Li(2), one Li(4), one Cr(1), and one P(2) atom. There are two inequivalent F sites. In the first F site, F(1) is bonded in a 5-coordinate geometry to one Li(2), one Li(3), one Li(4), one Cr(1), and one Cr(2) atom. In the second F site, F(2) is bonded in a distorted trigonal pyramidal geometry to one Li(1), one Li(3), one Cr(1), and one Cr(2) atom. is represented by the CIF file [CIF]
data_Li2CrPO4F
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.366
_cell_length_b   5.465
_cell_length_c   7.623
_cell_angle_alpha   107.213
_cell_angle_beta   105.949
_cell_angle_gamma   93.345
_symmetry_Int_Tables_number   1
_cell_volume   202.909
_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  0.004  0.003  0.012  1.0
  Cr  Cr1  1  0.982  0.983  0.497  1.0
  F  F2  1  0.804  0.096  0.708  1.0
  F  F3  1  0.160  0.900  0.292  1.0
  Li  Li4  1  0.234  0.576  0.156  1.0
  Li  Li5  1  0.483  0.132  0.846  1.0
  Li  Li6  1  0.494  0.999  0.471  1.0
  Li  Li7  1  0.804  0.458  0.820  1.0
  O  O8  1  0.263  0.803  0.642  1.0
  O  O9  1  0.724  0.196  0.370  1.0
  O  O10  1  0.363  0.355  0.682  1.0
  O  O11  1  0.155  0.660  0.903  1.0
  O  O12  1  0.836  0.334  0.103  1.0
  O  O13  1  0.365  0.234  0.081  1.0
  O  O14  1  0.629  0.637  0.334  1.0
  O  O15  1  0.633  0.771  0.912  1.0
  P  P16  1  0.646  0.353  0.231  1.0
  P  P17  1  0.350  0.643  0.780  1.0
[/CIF]
.
The structure described by Li2CrPO4F crystallizes in the triclinic P1 space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(4), one O(5), one O(6), one O(7), and one F(2) atom to form distorted LiO4F trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, edges with two equivalent Cr(1)O4F2 octahedra, and  an edgeedge with one P(1)O4 tetrahedra. In the second Li site, Li(2) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(5), one O(6), one O(8), and one F(1) atom. In the third Li site, Li(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(7), one F(1), and one F(2) atom. In the fourth Li site, Li(4) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), one O(8), and one F(1) atom. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(4), one O(5), one O(6), one O(8), one F(1), and one F(2) atom to form CrO4F2 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and edges with two equivalent Li(1)O4F trigonal bipyramids. In the second Cr site, Cr(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(7), one F(1), and one F(2) atom. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Cr(1)O4F2 octahedra,  a cornercorner with one Li(1)O4F trigonal bipyramid, and  an edgeedge with one Li(1)O4F trigonal bipyramid. The corner-sharing octahedral tilt angles range from 32-57°. In the second P site, P(2) is bonded to one O(1), one O(3), one O(4), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Cr(1)O4F2 octahedra and  a cornercorner with one Li(1)O4F trigonal bipyramid. The corner-sharing octahedral tilt angles range from 20-57°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Li(2), one Li(3), one Cr(2), and one P(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Li(3), one Cr(2), and one P(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Li(2), one Li(3), one Li(4), one Cr(2), and one P(2) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(4), one Cr(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Li(1), one Li(2), one Li(4), one Cr(1), and one P(1) atom. In the sixth O site, O(6) is bonded in a distorted see-saw-like geometry to one Li(1), one Li(2), one Cr(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Li(3), one Cr(2), and one P(1) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Li(2), one Li(4), one Cr(1), and one P(2) atom. There are two inequivalent F sites. In the first F site, F(1) is bonded in a 5-coordinate geometry to one Li(2), one Li(3), one Li(4), one Cr(1), and one Cr(2) atom. In the second F site, F(2) is bonded in a distorted trigonal pyramidal geometry to one Li(1), one Li(3), one Cr(1), and one Cr(2) atom. is represented by the CIF file [CIF]
data_Li2CrPO4F
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.366
_cell_length_b   5.465
_cell_length_c   7.623
_cell_angle_alpha   107.213
_cell_angle_beta   105.949
_cell_angle_gamma   93.345
_symmetry_Int_Tables_number   1
_cell_volume   202.909
_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  0.004  0.003  0.012  1.0
  Cr  Cr1  1  0.982  0.983  0.497  1.0
  F  F2  1  0.804  0.096  0.708  1.0
  F  F3  1  0.160  0.900  0.292  1.0
  Li  Li4  1  0.234  0.576  0.156  1.0
  Li  Li5  1  0.483  0.132  0.846  1.0
  Li  Li6  1  0.494  0.999  0.471  1.0
  Li  Li7  1  0.804  0.458  0.820  1.0
  O  O8  1  0.263  0.803  0.642  1.0
  O  O9  1  0.724  0.196  0.370  1.0
  O  O10  1  0.363  0.355  0.682  1.0
  O  O11  1  0.155  0.660  0.903  1.0
  O  O12  1  0.836  0.334  0.103  1.0
  O  O13  1  0.365  0.234  0.081  1.0
  O  O14  1  0.629  0.637  0.334  1.0
  O  O15  1  0.633  0.771  0.912  1.0
  P  P16  1  0.646  0.353  0.231  1.0
  P  P17  1  0.350  0.643  0.780  1.0
[/CIF]
.