The material structure described by LiCr2(PO4)2 crystallizes in the monoclinic Pc space group. Li(1) is bonded in a trigonal non-coplanar geometry to one O(2), one O(6), and one O(7) atom. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form CrO5 trigonal bipyramids that share  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent Cr(2)O5 trigonal bipyramids, and  an edgeedge with one P(1)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to one O(1), one O(5), one O(6), one O(7), and one O(8) atom to form CrO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent Cr(1)O5 trigonal bipyramids, and  an edgeedge with one 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(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(2)O5 trigonal bipyramid, corners with two equivalent Cr(1)O5 trigonal bipyramids, and  an edgeedge with one Cr(1)O5 trigonal bipyramid. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(1)O5 trigonal bipyramid, corners with two equivalent Cr(2)O5 trigonal bipyramids, and  an edgeedge with one Cr(2)O5 trigonal bipyramid. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cr(1), and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Cr(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cr(2), and one P(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Li(1), one Cr(2), and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Cr(2) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiCr2(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.098
_cell_length_b   5.159
_cell_length_c   10.535
_cell_angle_alpha   61.941
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   388.400
_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  0.804  0.960  0.103  1.0
  Li  Li1  1  0.196  0.960  0.603  1.0
  Cr  Cr2  1  0.417  0.038  0.977  1.0
  Cr  Cr3  1  0.583  0.038  0.477  1.0
  Cr  Cr4  1  0.914  0.484  0.529  1.0
  Cr  Cr5  1  0.086  0.484  0.029  1.0
  P  P6  1  0.477  0.291  0.145  1.0
  P  P7  1  0.523  0.291  0.645  1.0
  P  P8  1  0.957  0.082  0.358  1.0
  P  P9  1  0.043  0.082  0.858  1.0
  O  O10  1  0.309  0.261  0.073  1.0
  O  O11  1  0.403  0.191  0.559  1.0
  O  O12  1  0.467  0.070  0.305  1.0
  O  O13  1  0.495  0.604  0.619  1.0
  O  O14  1  0.505  0.604  0.119  1.0
  O  O15  1  0.533  0.070  0.805  1.0
  O  O16  1  0.597  0.191  0.059  1.0
  O  O17  1  0.691  0.261  0.573  1.0
  O  O18  1  0.789  0.903  0.421  1.0
  O  O19  1  0.920  0.845  0.965  1.0
  O  O20  1  0.967  0.134  0.200  1.0
  O  O21  1  0.038  0.375  0.864  1.0
  O  O22  1  0.962  0.375  0.364  1.0
  O  O23  1  0.033  0.134  0.700  1.0
  O  O24  1  0.080  0.845  0.465  1.0
  O  O25  1  0.211  0.903  0.921  1.0
[/CIF]
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The material structure described by LiCr2(PO4)2 crystallizes in the monoclinic Pc space group. Li(1) is bonded in a trigonal non-coplanar geometry to one O(2), one O(6), and one O(7) atom. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form CrO5 trigonal bipyramids that share  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent Cr(2)O5 trigonal bipyramids, and  an edgeedge with one P(1)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to one O(1), one O(5), one O(6), one O(7), and one O(8) atom to form CrO5 trigonal bipyramids that share  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, corners with two equivalent Cr(1)O5 trigonal bipyramids, and  an edgeedge with one 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(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(2)O5 trigonal bipyramid, corners with two equivalent Cr(1)O5 trigonal bipyramids, and  an edgeedge with one Cr(1)O5 trigonal bipyramid. In the second P site, P(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(1)O5 trigonal bipyramid, corners with two equivalent Cr(2)O5 trigonal bipyramids, and  an edgeedge with one Cr(2)O5 trigonal bipyramid. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cr(1), and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Cr(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Cr(1), one Cr(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Cr(2), and one P(2) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Li(1), one Cr(2), and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Cr(2) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiCr2(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.098
_cell_length_b   5.159
_cell_length_c   10.535
_cell_angle_alpha   61.941
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   388.400
_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  0.804  0.960  0.103  1.0
  Li  Li1  1  0.196  0.960  0.603  1.0
  Cr  Cr2  1  0.417  0.038  0.977  1.0
  Cr  Cr3  1  0.583  0.038  0.477  1.0
  Cr  Cr4  1  0.914  0.484  0.529  1.0
  Cr  Cr5  1  0.086  0.484  0.029  1.0
  P  P6  1  0.477  0.291  0.145  1.0
  P  P7  1  0.523  0.291  0.645  1.0
  P  P8  1  0.957  0.082  0.358  1.0
  P  P9  1  0.043  0.082  0.858  1.0
  O  O10  1  0.309  0.261  0.073  1.0
  O  O11  1  0.403  0.191  0.559  1.0
  O  O12  1  0.467  0.070  0.305  1.0
  O  O13  1  0.495  0.604  0.619  1.0
  O  O14  1  0.505  0.604  0.119  1.0
  O  O15  1  0.533  0.070  0.805  1.0
  O  O16  1  0.597  0.191  0.059  1.0
  O  O17  1  0.691  0.261  0.573  1.0
  O  O18  1  0.789  0.903  0.421  1.0
  O  O19  1  0.920  0.845  0.965  1.0
  O  O20  1  0.967  0.134  0.200  1.0
  O  O21  1  0.038  0.375  0.864  1.0
  O  O22  1  0.962  0.375  0.364  1.0
  O  O23  1  0.033  0.134  0.700  1.0
  O  O24  1  0.080  0.845  0.465  1.0
  O  O25  1  0.211  0.903  0.921  1.0
[/CIF]
.